Operational news archive

Here you will find an archive of past gas operational news and announcements.

GCS Outage - Tuesday 10th December 2019 16:00 - 20:00

25^th November 2019

Please be aware that there will be a GCS system outage taking place on Tuesday 10th December 2019 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of the Gas Day.

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

Please note there have been some changes to the dates of outages detailed below

National Grid IT System Outage - 30^th November 2019 16:00hr–23:00hr

Previously communicated as 16th November - News item from 30/10
12/11/2019

Please be aware that there will be a system outage taking place on 16^th November 2019 (between 16:00– 23:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 2nd December.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

National Grid IT System Outage – 3rd December 2019 16:00hrs–19:15hrs

Previously communicated as 19th November - News item from 30/10
12/11/2019

Please be aware that there will be a system outage taking place on 19th November 2019 (between 16:00– 19:15) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer. If you use electronic notifications to let us know your supply and demand information you will be asked to revert to contingency arrangements during these periods, please do not send us electronic files/emails as these will not be processed.

The following areas will be impacted:

Electronic notifications (Supply and Demand profiles submitted to National Grid)

PCLP Data- Hourly data.

Forecast Flows – Hourly data

Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 4th December

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on [email protected]

We apologise for any inconvenience this may cause.

National Grid IT System Outage – 5th December 2019 16:00hrs–19:15hrs

Previously communicated as 21st November - News item from 30/10
12/11/2019

Please be aware that there will be a system outage taking place on 21st November 2019 (between 16:00– 19:15) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer. If you use electronic notifications to let us know your supply and demand information you will be asked to revert to contingency arrangements during these periods, please do not send us electronic files/emails as these will not be processed.

The following areas will be impacted:

Electronic notifications (Supply and Demand profiles submitted to National Grid)

PCLP Data- Hourly data.

Forecast Flows – Hourly data

Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 6th December

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on [email protected]

We apologise for any inconvenience this may cause.

Gemini EFT Outage

12th November 2019

Xoserve will be conducting a Gemini Enhanced File Transfer (EFT) Disaster Recovery test.

There will be two outages on all inbound and outbound files during:

Saturday 16th November 05:00 to 07:00 UK GMT

Sunday 17^th November 05:00 to 07:00 UK GMT

Any inbound and outbound impacted files will be processed once the activities have been completed.

If you have any further questions, please contact us on box.[email protected].

MIPI Issues – Data Publication

7th November 2019

Please be aware that there was an issue with the MIPI hourly data publication (including Prevailing View and Instantaneous Flows) early this morning. These were reported at 03:00hrs and following remediation activities normal publication was confirmed and monitored for 07:00hrs.

Contingency Data has been published to the National Grid Website, Transmission Operational Data www.nationalgridgas.com/data-and-operations/transmission-operational-data. An investigation is currently underway to understand the root cause.

If you have any questions or concerns then please email us at box.[email protected]

National Grid IT System Outage - 05th November 2019 16:00hr–21:00hr

30/10/2019

Please be aware that there will be an outage on our Operational Data pages on Tuesday 5th November, from 16:00 – 21:00. This to carry out patching of data, and we will be publishing a contingency data set with PCLP, Forecast Supply and Demand Forecasts provided via contingency documents (in supplementary reports), and via ANS.

For a period during the outage it is expected that the MIPI database will not be available – please see below table to confirm the impacts on data both during the time when this is available and unavailable.

Please accept our apologies for any disruption during this time.

CANCELLED: National Grid IT System Outage - 16^th November 2019 16:00hr–23:00hr

30 October 2019

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 18^h November.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

CANCELLED: National Grid IT System Outage – 19th November 2019 16:00hrs–19:15hrs

30 October 2019

The following areas will be impacted:

Electronic notifications (Supply and Demand profiles submitted to National Grid)

PCLP Data- Hourly data.

Forecast Flows – Hourly data

Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 22nd November

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on [email protected]

We apologise for any inconvenience this may cause.

CANCELLED: National Grid IT System Outage – 21st November 2019 16:00hrs–19:15hrs

30 October 2019

The following areas will be impacted:

Electronic notifications (Supply and Demand profiles submitted to National Grid)

PCLP Data- Hourly data.

Forecast Flows – Hourly data

Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

October Clock Change

27 October 2019

All Stakeholders,

The Gemini Clo

The Gemini system will not change to GMT until 04:30 BST (03:30 GMT) on Sunday 27th October, the normal housekeeping slot will commence as per current BST time.

Please be aware that the system clocks will remain in BST until 04:30 and the system will close for housekeeping as normal at 03.00 BST. The systems will then return at the times given below.

Gemini Timetable (system times):

Start of outage: Sunday 27/10/19 at 03:00 BST (02:00 GMT)

End of outage: Sunday 27/10/19 to 05:00 GMT

Duration: Net outage - 3 elapsed hours (normal housekeeping slot)

Shippers

All EU Nominations for gas day 27/10/19 will need to be placed and confirmed within both the Gemini and TSO systems by 00:59 BST on Sunday 27th October 2019 to be included in the end of day totals.

TSO’s

The impact to the EU Nominations process is that the last DELORD file to be sent to the TSOs from Gemini will be at 01:03 BST on Sunday 27^th October 2019.

FWACV Process

26/09/2019

Following an internal review National Grid have decided to withdraw from the centralised FWACV process they have been executing on behalf of the DN’s.
Discussions are underway with the DN’s to hand this process over.

Further information on this transition will follow, in the mean time we welcome any comments from the industry regarding the level of service you would like to see going forward. Please send any comments to [email protected].

GCS System Essential Work - Monday 7th October 2019 16:15 - 16:45

Please be aware that there will be essential maintenance be taking place on the GCS system today (between 16:15 and 16:45) which may affect some elements of Operational data displayed through MIPI. Impact may be seen through both the data displayed on the Prevailing View page within Data Item Explorer.

To clarify, this may affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following may be impacted:

We do not anticipate using ANS to publish Opening line pack, demand & PCLP.

Any missed data items will be patched back by the end of the Gas Day.

If you have any further questions, please contact us on box.[email protected]

Changes to Gas Security Notifications

13th September 2019

This winter, we are changing the name of our Gas Deficit Warning and making some changes to how we calculate and notify the market of potential gas supply/demand imbalances. Please watch this video by Phil Hobbins which sets out the changes to Gas Deficit Warnings.

A video explaining the changes to Margins Notices can be found here.

A Q&A explain all of these changes can be located here.

GB EU Charging Project - Go Live Successful

10th September 2019

Further to our recent updates about the GB EU Charging Project (GBEUC) Go Live on Sunday 8th September we are pleased to confirm that the implementation was successful and all impacted systems are live.

Please find below a reminder of the changes:

Modifications/Change Variations driving the 8th September 2019 Go Live

The external impacts resulting from the systems change are low. The following mods and/or Change Variations are driving the changes:

611 – Amendments to the firm capacity payable price at Interconnector Points

Due to the EU Network Code CAM Incremental requirements Gemini will be able to accommodate the Reserve and Premium Prices for IP PARCA.

597 - Rules for the Release of Incremental Capacity at Interconnector Points

Due to the EU Network Code CAM Incremental requirements Gemini and related downstream systems have to be compliant with the Interconnector Point (IP) Planning and Advanced Reservation of Capacity Agreement (PARCA) process. In the event that a customer raises an IP PARCA they may wish to book IP Capacity. Gemini will be able to accommodate bookings for IP PARCA Capacity at Moffat and Bacton. This means that there are a couple of additional fields in Gemini and also a slight modification to a report in MIPI titled ‘Entry Long Term Capacity Sold At Auctions Report’.

Gemini Live Capacity versus Nominations Report

Provision of a new Live Capacity versus Nominations Report for a shipper and location combination on a gas day or day ahead basis.

Gemini Day Ahead and Within Day Auctions automated for GNCC

This is an internal process but requires National Grid to reconfigure the date parameters for the Entry Day Ahead (DADSEC) and Within Day (WDDSEC) Methods of Sales to make use of new Gemini system code. This is a one off activity that may impact your API configuration.

A communication was sent to the shipper community on the 23rd July with the information below but is included here as a reminder:

The current date parameters for these two auctions are;
Start date 01/04/2019
End date 31/03/2020

We are proposing a one off change;
Start date 01/04/2019
End date 30/09/2019
Start date 01/10/2019
End date 31/03/2020

We will make the change on Monday 9th September, any API automation you have may need to be revised with these amended dates and references to avoid file transfers failing from this date.

With effect from 01/10/2019 the new WDDSEC method of sale reference will be;
WDDSEC01OCT201931MAR20200688

With effect from 01/10/2019 the new DADSEC method of sale reference will be;
DADSEC01OCT201931MAR20200689

This change does not impact any other daily auctions only the DADSEC and WDDSEC.

If you have any queries please email [email protected].

GB EU Charging Project - GO Live this Sunday 8th September

4th September

The GB EU Charging Project (GBEUC) has a Go Live this Sunday 8^th September which impacts Gemini and some downstream systems including MIPI. The Gemini code update will be delivered during the Gemini Maintenance Window between 03:00 – 05:00, and MIPI will be updated between 07:00 and 08:30. There will not be a MIPI outage but users may experience some intermittent disruption to the service for a short time.

Further reminder communications will be issued via ANS in the run up to go live and during Sunday 8^th September.

Modifications/Change Variations driving the 8th September 2019 Go Live

The external impacts resulting from the systems change are low. The following mods and/or Change Variations are driving the changes:

611 – Amendments to the firm capacity payable price at Interconnector Points

Due to the EU Network Code CAM Incremental requirements Gemini will be able to accommodate the Reserve and Premium Prices for IP PARCA.

597 - Rules for the Release of Incremental Capacity at Interconnector Points

Gemini Live Capacity versus Nominations Report

Provision of a new Live Capacity versus Nominations Report for a shipper and location combination on a gas day or day ahead basis.

Gemini Day Ahead and Within Day Auctions automated for GNCC

A communication was sent to the shipper community on the 23rd July with the information below but is included here as a reminder:

GCS Outage - Tuesday 20th August 2019 16:00 - 20:00

14th August

Please be aware that there will be a GCS system outage taking place on Tuesday 20^th August 2019 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of the Gas Day.

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

UK Link Disaster Recovery

6th August

As part of Xoserve’s annual programme of disaster recovery and resilience testing, the UK Link Disaster Recovery test for 2019 will be implemented over the weekend of 16/17/18th August.

This is to test and prove the DR capabilities and procedures of UK Link and will be managed end-to-end by Xoserve.

There will be a service outage between the following times:

UK Link Portal and CMS - Friday 16th August 23:00 UK BST to Saturday 17th August 10:00 UK BST (failover to DR site)

The UK Link system will operate normally from the DR site in the period between failover and failback.

UK Link Portal Saturday 17th August 23:00 UK BST to Sunday 18th August 08:00 UK BST (failback to primary site)

Contingency dates for the test are 23/24/25^th August with the same timings as above.

Impact of the DR test

Gemini

The following NDM Gas Nominations (Demand Publication) will be impacted. During this period Gemini will utilise the previous weather values as of 16:00 UK BST.
Gas Flow Days 16/08/19 and 17/08/19 published at 00:00 on Saturday 17^th August will contain the same values as 16:00 on 16^th August.
Gas Flow Day 17/08/19 published at 10:00 on Saturday 17^th August may contain the same values as 16:00 on 16^th August (depending on when catch-up activities are completed).
Gas Flow Days 17/08/19 and 18/08/19 published at 00:00 on Sunday 18^th August will contain the same values as 16:00 on 17^th August.

MIPI

No new forecast weather in MIPI at 23:00 UK BST on Friday 16^th August for Gas Flow Days 16/08/19 and 17/08/19.
No new forecast weather in MIPI at 08:00 UK BST on Saturday 17^th August for Gas Flow Days 17/08/19 and 18/08/19.
No new forecast weather in MIPI at 23:00 UK BST on Saturday 17^th August for Gas Flow Days 17/08/19 and 18/08/19.
There will be a delay in the publication of actual weather data for gas day Friday 16th August in MIPI, this data will be published late morning on Saturday 17th.
If a delay to the DR failback occurs, there will be a delay in the publication of actual weather data for gas day Friday 16th August in MIPI, this data will be published late morning on the 17th.

Updates will be available on www.xoserve.com and via the Xoserve Service Desk on 0845 600 0506.

If you require further information prior to the test, please contact Russell Thornley at Xoserve – [email protected]

We apologise for any inconvenience this may cause.

Potential Impact to API Flows for GB Short Term Entry Auctions

1st August

To improve the reliability of the GB daily auctions, National Grid need to reconfigure the date parameters for the Entry Day Ahead (DADSEC) and Within Day (WDDSEC) Methods of Sales to make use of new Gemini system code. This is a one off activity that may impact your API configuration.

The current date parameters for these two auctions are;
Start date 01/04/2019
End date 31/03/2020

We are proposing a one off change;
Start date 01/04/2019
End date 30/09/2019
Start date 01/10/2019
End date 31/03/2020

We will make the change on Monday 9^th September, any API automation you have may need to be revised with these amended dates and references to avoid file transfers failing from this date.

With effect from 01/10/2019 the new WDDSEC method of sale reference will be;
WDDSEC01OCT201931MAR20200688

With effect from 01/10/2019 the new DADSEC method of sale reference will be;
DADSEC01OCT201931MAR20200689

This change does not impact any other daily auctions only the DADSEC and WDDSEC.

If you wish to discuss the impacts of this proposed change or for further information please email [email protected].

GCS Outage - Thursday 4^th July 2019 17:50–18:50

26th June

Please be aware that there will be an Emergency system outage taking place on 4^th July 2019 (between 17:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 17:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 4^th July.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

MIPI Outage

25th June

Please be aware there will be MIPI outage taking place on Friday 28th June between 17:30- 18:00. The MIPI website will be intermittent during this time. Normal service will resume shortly after.

GCS Outage – Wednesday 19^th June 2019 17:00pm–20:00pm

13th June

Please be aware that there will be a GCS system outage taking place on Wednesday 19^th June 2019 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of the Gas Day.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

GCS Outage – Tuesday 4^th June 2019 16:00pm–20:00pm

30th May

Please be aware that there will be a GCS system outage taking place on Tuesday 4^th June 2019 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 8th August.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

Emergency MIPI Maintenance

23th May

We will be carrying out some emergency security maintenance to MIPI on 24^th May between the hours of 00:00hrs – 02:00hrs.

Impacts include:

The latest data will not be published between 00:00hrs – 02:00hrs, the webpages and historical data will be accessible.
We will publish further communications once the data is fully patched.

If you would like further information please email us: [email protected]

MIPI issue

2nd May

The MIPI issue that we experienced earlier has now been resolved with the respective data patched and upto date.

MIPI issue

2nd May

We are experiencing issues with the MIPI website since 10am today. The following reports will not have the latest data:

SISR03 Forecast demand
Actual Demand
Actual Composite weather variable

We will publish further communications once this issue is resolved.

If you would like more information please contact us: [email protected]

Emergency GCS Outage - Thursday 2^nd May 2019 16:00pm – 20:00pm

2nd May

Please be aware that there will be an Emergency system outage taking place on 2^nd May August 2019 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 8th August.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

MIPI Outage

10th April

A MIPI outage will take place on Tuesday 16^th April between the hours of 16:00 to 23:00.

During this outage period the Forecast Demand (SISRO3) will be unavailable, respective data will be patched following the completion of the outage. The 21:00 Demand Attribute File, UIG and Linepack will be published via the contingency methods. For further information please email us on: [email protected]

Gemini Disaster Recovery

10th April

Xoserve will be conducting the 2019 Gemini, Gemini Exit and Gemini EU disaster recovery test on Saturday 13th and Sunday 14th April as part of their annual programme of disaster recovery and resilience testing. This is an annual test to prove the DR capabilities and procedures of Gemini and will be managed end-to-end by Xoserve.

There will be a service outage between the following times:

Gemini, Gemini Exit and EU – Saturday 13th April 03:15 to 07:30 UK BST. Should it be necessary to fail back to the primary site, the outage window will be extended to 12:30 UK BST.

Gemini, Gemini Exit and EU – Sunday 14th April 03:00 to 07:30 UK BST. Should there be issues failing back to the primary site, the outage window will be extended to 12:30 UK BST.

The contingency date for the 2019 DR test is Saturday 27^th and Sunday 28^th April with the same timings as above.

Gemini Disaster Recovery

4th April

There will be a service outage between the following times:

Gemini, Gemini Exit and EU – Saturday 13th April 03:15 to 07:30 UK BST. Should it be necessary to fail back to the primary site, the outage window will be extended to 12:30 UK BST.

Gemini, Gemini Exit and EU – Sunday 14th April 03:00 to 07:30 UK BST. Should there be issues failing back to the primary site, the outage window will be extended to 12:30 UK BST.

Clock Change 2019

26th March

The Gemini Clock change from Greenwich Mean Time (GMT) to British Summer Time (BST) will be carried out on Sunday 31st March 2019.

The Gemini system will not change to BST until 02:00 GMT (03:00 BST) on Sunday 31st March 2019, when the normal housekeeping slot will commence.

Please be aware that the system clocks will remain in GMT until 02:00 when they close for housekeeping. The systems will then return at the times given in the timetable below:

Gemini Timetable (system times):

Start of outage: Sunday 31/03/2019 at 02:00 GMT (03:00 BST)

End of outage: Sunday 31/03/2019to 05:00 BST

Duration: Net outage - 2 elapsed hours (normal housekeeping slot)

Shippers

All EU Nominations for gas day 31/03/19 will need to be placed and confirmed within both the Gemini and TSO systems by 00:59 GMT on Sunday 31st March 2019 to be included in the end of day totals.

TSO’s

The impact to the EU Nominations process is that the last DELORD file to be sent to the TSOs from Gemini will be at 01:03 GMT.

Regards

National Grid

MIPI Issues

25th March

Please be aware we experienced issues with the MIPI website on 24^th March between the hours of 06:14 to 08:30. This issue is now resolved and the website is back up and running and historical data is patched.

MIPI Outage

19th March

Please be aware there will be a MIPI outage taking place on Sunday 24^th March between the hours of 02:00 to 03:00. The following reports will be affected:

NB05- System Nomination Balance report will not be published for the 02:00 hour bar, as no file will be received.
Nomination report will not be published for the 02:00 hour bar.
The latest data will not be visible during the expected impact time.

Once the activity is complete, it will take just under an hour to make the latest data available.

For further information please contact the Operational Liaison team via email- [email protected]

GCS Outage

7th March

Due to operational requirements, a system outage will take place on Thursday 12th March GCS Switchover 16:00 – 20:00

This will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data
Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 – 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of each Gas Day

See our Operational news page here: click here for gas operational news

Please note these dates may change due to operational requirements.

If you have any further questions, please contact us on box.[email protected]

GCS Outage

18^th February 2019

Due to operational requirements, a system outage wil take place on Monday 18^th February GCS Switchover 16:00 – 18:30

This will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:15 – 18:30
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of each Gas Day

See our Operational news page here: click here for gas operational news

Please note these dates may change due to operational requirements.

If you have any further questions, please contact us on box.[email protected]

GCS Change

8^th February 2019

Please be aware that there will be system outages taking place on Thursday 14th February GCS Switchover 16:15 – 18:00

This will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:15 – 18:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of each Gas Day

See our Operational news page here: click here for gas operational news

Please note these dates may change due to operational requirements.

If you have any further questions, please contact us on box.[email protected]

MIPI Maintenance

5th February 2019

MIPI maintenance will take place 10.02.19. between 02:10hrs to 02:55hrs, including.

The following reports in MIPI will be affected:

NB05 - System Nomination Balance. report will not be published for 02:00 hour bar
Nomination Report. Report will not be published for 02:00 hour bar.

PDWS:

The data flow to ENTSOG will be impacted for 02:00 hour bar

GMRS:

The latest data will not be visible during the expected impact window (02:10hrs to 02:55hrs). Following the activity, it will take approx. 30mins to synchronise the data.

GCS Changes

16th January 2019

Please be aware that there will be system outages taking place on the following dates:

Tuesday 5th February GCS Switchover 16:15 – 20:00
Tuesday 12th February GCS switchover 16:15 – 20:00
Tuesday 19th March GCS Switchover 16:15 – 20:00

This will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:15 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage (Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of each Gas Day

See our Operational news page here: click here for gas operational news

Please note these dates may change due to operational requirements.

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

MIPI Issue

15th January 2019

The price data is now available in MIPI.

Sorry for the inconvenience this has caused.

MIPI Issue

15th January 2019

Please be aware we are experiencing issues with SAP price data in MIPI affecting data from the the 11th January. Further updates will be communicated via this page.

If you have any further questions, please contact us on box.[email protected].

MIPI Maintenance

6th December 2018

Please be aware there is a MIPI maintenance activity taking place on 11th December between 19:10 and 19:40.

During this period MIPI will be unavailable. During the outage (Opening Line Pack, Demand and PCLP) will be made available via the normal ANS route.

If you have any further questions, please contact us on box.[email protected].

Gemini Extended Outage

4th December 2018

Xoserve will be conducting a Gemini extended service outage on Sunday 9th December between 03:00 – 07:00 UK BST.

No capacity auctions will be running until the system is released at 07:00 UK BST.

If you have any further questions, please contact us on box.[email protected].

MIPI Maintenance

23rd November 2018

Please be aware there is a MIPI maintenance activity taking place on 27th November between 19:00 and 19:40. During this period MIPI will be unavailable. During the outage (Opening line pack, demand and PCLP) will be made available via the normal ANS route. If you have any further questions, please contact us on box.[email protected].

Xoserve Update

23rd November 2018

Xoserve will be conducting a Gemini Enhanced File Transfer Upgrade outage on Tuesday 27^th November all inbound and outbound files during this window will not be processed until after EFT has been released at 07:00 UK GMT following the upgrade.

Emergency Change - GCS Outage - Wednesday 21st November 2018 16:00pm–18:00pm

21st November 2018

Please be aware that there will be an emergency change system outage taking place on 21^st November 2018 (between 16:00– 18:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 18:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 22^nd November.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

Gemini Extended Outage

20th November 2018

Xoserve will be conducting a Gemini extended service outage on Sunday 25th November between 03:00 – 07:00 UK GMT. No capacity auctions will be running until the system is released at 07:00 UK GMT.

GB EU Charging (2019) Part A Go Live Sunday 18 November

16 November 2018

This article covers information relevant to the GB EU Charging (2019) Part A go live this Sunday 18th November.

The external impacts of Part A to the industry are:

Data related to the Reference Price, Multipliers and Discounts will be available from May 2019 on the ENTSOG Transparency Platform
Entry Capacity Availability Report on MIPI with additional constraints data.

How will the go live on Sunday 18th November impact the industry?

There should be no impact to system service as a result of the go live on Sunday
The changes to Gemini are being made during the normal maintenance window 03:00 - 05:00
MIPI changes are being implemented from 07:00 without a system outage

What do you need to do?

An updated list of MIPI APIs is available on the National Grid website (API Data Item List v1.7)

Go Live Support

Xoserve Service Desk
0845 600 0506/+44 (0)121 623 2858
email: [email protected]
National Grid Project Team
email: [email protected] (8am - 5pm)
If we experience any issues which impact our systems the industry will be notified immediately

Regards,

National Grid

October Clock Change

24 October 2018

All Stakeholders,

The Gemini Clock change from British Summer Time (BST) to Greenwich Mean Time (GMT) will be carried out on Sunday 28th October 2018.

The Gemini system will not change to GMT until 04:30 BST (03:30 GMT) on Sunday 28th October, the normal housekeeping slot will commence as per current BST time.

Please be aware that the system clocks will remain in BST until 04:30 and the system will close for housekeeping as normal at 03.00 BST. The systems will then return at the times given below.

Gemini Timetable (system times):

Start of outage: Sunday 28/10/18at 03:00 BST (02:00 GMT)

End of outage: Sunday 28/10/18 to 05:00 GMT

Duration: Net outage - 3 elapsed hours

Shippers

All EU Nominations for gas day 28/10/18 will need to be placed and confirmed within both the Gemini and TSO systems by 00:59 BST on Sunday 28th October 2018 to be included in the end of day totals.

TSO’s

The impact to the EU Nominations process is that the last DELORD file to be sent to the TSOs from Gemini will be at 01:04 BST.

Regards

National Grid

MIPI Maintenance

Please be aware that there will be a system outage taking place on 16th October 2018 (between 18:30– 19:10) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

See our Operational news page here: click here for gas operational newsIf you have any further questions, please contact us on [email protected]

We apologise for any inconvenience this may cause.

GCS Outage - 6th November 2018 16:00–20:00

11th October 2018

Please be aware that there will be a system outage taking place on 6th November 2018 (between 16:00– 20:00) which will affect some elements of Operational data displayed through MIPI. Impacts will be seen through both the data displayed on the Prevailing View page and within Data Item Explorer.

To clarify, this will affect the following data within Prevailing view:

PCLP Data- Hourly data.
Forecast Flows – Hourly data
Physical Flows – Hourly data

Within Data Item Explorer the following will be impacted:

Obligated MIPI reports impacted	Impact During GCS Outage 16:00 - 20:00
NTSAFF-Aggregate Forecast Flows into the NTS	Continues to Update with last good value
NTSAPF-Aggregate Physical Flows into the NTS	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
NB92-System Status Information	Total Outage to data - no updates - until GCS is back up, next available hour bar will then be published by GNCC
Physical Flows, Bacton IUK Entry	No data updates for duration
Physical Flows, Bacton IUK Exit	No data updates for duration
Physical Flows, Bacton BBL Entry	No data updates for duration
Physical Flows, Moffat Exit	No data updates for duration
GMRS Data	Updates with last good value until a new value is received from GCS

During the outage ( Opening line pack, demand & PCLP) will be made available utilising ANS – this data will also available on the bottom of the prevailing view screen.

All missed data items will be patched back by the end of Gas Day 8th August.

See our Operational news page here: click here for gas operational news

If you have any further questions, please contact us on box.[email protected]

We apologise for any inconvenience this may cause.

GCS Outage - Tuesday 19 June 2018 4:15pm–7:15pm

13 June 2018

Please be aware that there will be a system outage taking place on 19 June 2018 (between 4:15pm–7:15pm). This will affect the most up to date supply data which will be available once the system is restored and PCLP data will be sent via the normal ANS route.

Going forward as promised during the last Operations forum, we will communicate future outages on this page. This will include a clear timeline of when outages will take place, affected reports, and plans for rollback.

If you have any further questions, please contact us on box.[email protected]

Xoserve will be conducting their annual Gemini, Gemini Exit and EU disaster recovery test on Saturday 16 June 03:15am–07:30am UK BST and Sunday 17 June 03:00am–07:30 UK BST. Should it be necessary to fail back to the primary site the outage window will be extended to 12:30pm UK BST. No capacity auctions and omination data will be available until the system is released at 07:30am UK BST.

The following reports will be affected on Saturday and Sunday:

NB05-System Nomination Balance	Data for the following hours will not be received and published on MIPI: 03:00, 04:00, 05:00, 06:00, 07:00 Data will be available post outage
Nomination Report	Data for the following hours will not be received and published on MIPI: 03:00, 04:00, 05:00, 06:00, 07:00 Data will be available post outage
NORD06-Gas Trading Report(D+2)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NTSEOD-NTS Commercial Entry End of Day Flow	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
OC46-Price Information History	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
UK Wholesale Gas Market Liquidity Data	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
Use of Balancing Tools (NORM01)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
DA10-View WCF / SF	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD01-Cashout Balancing Prices	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD01-Daily Balance Report	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD01-Daily Operation Information	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
Capacity Trading Analysis (NORM26)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
Long Term Capacity Auctions Report	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD03-Future Entry Capacity Traded	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD03-Future Entry Capacity Traded (Capacity/Prices)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD03-Future Entry Capacity Traded (Transactions)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD03-Within Day Entry Capacity Traded Report (Capacity/Prices)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day
NORD03-Within Day Entry Capacity Traded Report (Transactions)	Data for the outage period will be received and published on MIPI on Sunday and Monday following the outage each day

We will provide regular updates following this outage. If you have any further questions, please contact us on box.[email protected]

Rough Storage Classification Change - MIPI Reporting

8 June 2018

Please be aware there will be a MIPI maintenance activity taking place Wednesday 13 June 2018 between 4:00m–7:00pm. Between this time all historical data will still be available. PCLP data will be made available during the normal ANS route. Please be aware all the reports impacted will be updated accordingly following this activity.

On 17 January 2018 Rough was reclassified as a production (sub-terminal) facility on the NTS, due to this change the information we provide required an extensive change within our systems to allow the correct and relevant information to be published to the industry.

For Gas Day 16 January 2018 all data held in MIPI and aligned to Rough will be in relation to Rough’s operation as a Storage Site
For Gas Day 17 January 2018 all data held in MIPI and aligned to Rough will be in relation to Rough’s operation as a Production Facility (sub-terminal).

The Rough sub-terminal information will be available in both the MIPI and GMRS applications.

Daily Summary Report
Nomination Report
Aggregate Allocation Report
NTS Commercial Entry End of Days
NTS Physical Entry End of Days
Storage and LNG Report
Daily Balance Report
Storage Withdrawals and Injection Allocations

The historical data for Rough Storage site will be available in both the MIPI and GMRS applications in line with retention period. You can see the data post our deployment. The Rough Storage data will be available in the below impacted reports:

Nomination Report
NTSEOD Physical Entry end of the day report
NTSEOD commercial entry end of the day report
The aggregated value in the Aggregate allocation report, NTSAFF Forecast flow, NTSAPF Physical Flow
The GMRS application

You can download the data using report explorer and data item explorer.

We will provide regular updates following this outage. If you have any further questions please contact us on box.[email protected]

MIPI Outage - 14 May 2018

12 May 2018

Please note there will be a MIPI outage taking place Monday 14 May 2018 between 09:00am–1:30pm. All reports will be unavailable during this outage and PCLP data will be made available during the normal ANS route. Normal service will resume shortly after.

For further information, please contact the Operational Liaison team:

[email protected]

MIPI UPDATE

9 May 2018

The Gemini and Exit systems use industry standard SSL encryption certificates to transmit data securely between Xoserve and yourselves, when accessing through the Gemini API connection.

This certificate is soon to expire, so Xoserve will be renewing on Friday 11 May 2018 during the Gemini maintenance window (03:15am–04:15am), and do not anticipate any problems with the update to yourselves.

Should you encounter any problems, your IT resource will need to follow the below steps to assist with resolution. Documentation containing screenshots is also available from the Xoserve website at: https://www.xoserve.com/index.php/our-systems/gemini/gemini-technical-publications/.

Note: If required, both the Root and Intermediate Certificates can be provided by contacting the Xoserve Service Desk.

Download the certificates to desktop and rename it from .txt to .cer.
Double click in the certificate and click the "Install Certificate..." button.
Click on next
Select "Place all certificates in the following store"
Click on Browse and select "Trusted Root Certification Authorities" and Click OK.
Click Next and Finish.
On the security warning window click on yes to import the certificate.

Certificate Common Name: prod-ix.geminints.com

If you encounter any problems following your certificate upgrade, please raise a support ticket with the Xoserve Service Desk ([email protected]) or call 0845 6000 506.

Procurement guidelines 2017-2018

30 April 2018

Please be aware that the Procurement Guidelines Report covering the period 1 April 2017 to 31 March 2018 is now available on the Procurement and System Management Documents page.

Please note there will be a MIPI outage taking place on Thursday 31 May 2018 between 4:15pm–7:15pm. All reports will be unavailable during this outage and PCLP data will be made available during the normal ANS route. Normal service will resume shortly after.

For further information, please contact the Operational Liaison team:

[email protected]

MIPI UPDATE

31 April 2018

Please note there will be a MIPI Outage taking place Tuesday 1 May 2018 between 4:15–18:00. All reports will be unavailable during this outage and PCLP data will be made available during the normal ANS route.

Normal service should resume shortly after and missing data during the outage will be patched the following day. If you have any further questions please contact us on: [email protected]

Clock Change

23 March 2018

The Gemini Clock change from Greenwich Mean Time (GMT) to British Summer Time (BST) will be carried out on Sunday 25 March 2018.

The Gemini system will not change to BST until 02:00am GMT (03:00am BST) on Sunday 25 March 2018, when the normal housekeeping slot will commence.

Please be aware that the system clocks will remain in GMT until 02:00am when they close for housekeeping. The systems will then return at the times given in the timetable below:

Gemini Timetable (system times):

Start of outage: Sunday 25/03/2018 at 02:00 GMT (03:00 BST)

End of outage: Sunday 25/03/2018to 05:00 BST

Duration: Net outage - 2 elapsed hours (normal housekeeping slot)

Shippers

All EU Nominations for gas day 25 March 2018 will need to be placed and confirmed within both the Gemini and TSO systems by 00:59am GMT on Sunday 25 March.

TSO’s

The impact to the EU Nominations process is that the last DELORD file to be sent to the TSOs from Gemini will be at 01:03am GMT.

Regards

National Grid

MIPI Data Availability

22 March 2018

Data via our MIPI pages has failed for the 1:00pm and 2:00pm hour bars, we are working with our IS colleagues to rectify this issue as we write.

We will update the industry once further information is received.

MIPI UPDATE

20 March 2018

The issue surrounding MIPI Data that was unavailable for 1:00pm and 2:00pm has now been rectified, our IS team will keep the ticket open and monitored. For any queries please contact us at: [email protected]

MIPI UPDATE

1 March 2018

Please be aware we are experiencing issues with MIPI data due to issues from the source system.

The following reports have been affected:

Nomination Report
AOF-Actual Offtake Flows.
Aggregate Allocation Report
NTS Physical Entry End Of Day (NTSEOD)
NORD01-Daily Operation Information
NTS Physical Entry End Of Day (NTSEOD)
Day Ahead Gas Flow Nominations
NB05-System Nomination Balance.
SISR04-Actual Demands.
Demand Analysis LDZ DM and NDM (NORM06)
Operational Summary Report
Daily Auctions Summary Report (Within Day)
NORD07-Capacity Availability Report.

We will provide further updates and apologise for any inconvenience caused.

For further information, please contact the Operational Liaison team:

[email protected]

01926 656 474

MIPI UPDATE

1 March 2018

Dear Customer,

Please be advised that for Gas Day 1 March 2018 the trade data highlighted on the prevailing view page is not accurate.

The correct data is as follows:

	p/ KWh	p/Therm
SAP	12.7162	372.6761
SMPB	17.0266	499.0000
SMPS	12.6710	371.3514
7 day av of SAP	4.3397	127.1850

Work is underway to ensure there is a data fix in MIPI.

Non Storage Supply Forecast Update

25 February 2018

Based on the latest information available to us we have revised the Non Storage Supply (NSS) forecast number which has a consequential impact on the Margins Notice. The updated number is reflected on Prevailing View.

http://mip-prod-web.azurewebsites.net/PrevailingView/Index

MIPI GMRS DR TEST - Update

23 February 2018 (2:00pm)

Dear Customer,

We are pleased to inform you that Disaster recovery has now been completed. The systems have been restored and are running as expected.

During this outage period, we appreciate that various data items were not published as normal. In response to this, we have summarised these missing data items below:

23 February 2018

Time	OPLP	Demand	PCLP	SAP	SMPB	SMPS
00:00	359.8	310.0	394.1	1.874	1.8922	1.8018
01:00	358.4	310.0	392.7	1.8469	1.8921	1.8017
02:00	357.4	310.0	391.4	1.8468	1.8921	1.8016
04:00	358.7	313.4	388.5
05:00	358.7	313.5	388.8	1.8468	1.8921	1.8016
06:00	358.7	313.5	388.3	1.8468	1.8921	1.8016
07:00	358.7	313.5	388.2	1.8466	1.8921	1.8016
08:00	358.7	314.1	387.6	1.8466	1.8921	1.8016
09:00	358.7	312.8	383.5	1.8468	1.8921	1.8016
10:00	358.7	315.4	381.5	1.8468	1.8921	1.8016
11:00	358.7	315.4	378.5	1.8468	1.8921	1.8016
12:00	358.7	313.7	358.7	1.8468	1.8921	1.8016

Restoration of this data, back on to the system, could take up to 24hrs.

We apologise again for any inconvenience caused.

For further information, please contact the Operational Liaison team:

[email protected]

01926 656 474

MIPI UPDATE

23 February 2018

Dear Customer,

We are writing to inform you that due to some minor issues, the completion of Disaster Recovery is running slightly behind schedule and therefore MIPI is not displaying current data.

National Grid is working to restore service as soon as possible.

In the meantime, we continue to post the following hourly data, via ANS. For those who do not have access to the ANS service, please find the 12:00hr missing MIPI data, below:

23 February 2018

Time	OPLP	Demand	PCLP	SAP	SMPB	SMPS
12:00	358.7	313.7	358.7	1.8468	1.8921	1.8016

We will continue to publish this information via ANS until MIPI has been completely restored. We will also provide a further news item with all hourly data which has been published via ANS since the start of the Gas Day for those customers who do not have access to ANS.

We apologise for any inconvenience caused.

For further information, please contact the Operational Liaison team:

[email protected]

01926 656 474

Alternatively, please contact Hayley Johnson from the Operational Liaison team:

07568 577 564

MIPI UPDATE

20 February 2018

There will be a planned outage to MIPI and GSMR from 08:45am on Thursday 22 February until 11:00am Friday 23 February, to allow a Disaster Recovery Test to take place.

MIPI may appear to be available in between these times but may not have current data. National Grid will publish key hourly data via ANS during this period. Please note normal service will resume following the outage, and data lost during the outage will be patched in due course. Update on progress will be available periodically via ANS. Further updates will be available following the outage.

MIPI Planned Outage

19 February 2018

Please be aware there will be a system outage taking place on Monday 19 February 2018 between the hours of 5:00pm and 02:00am. All MIPI reports will be unavailable during this outage.

Normal service should resume shortly after and missing data during the outage will be patched the following day. If you have any further questions please contact us on box. [email protected]

Gemini Extended Outage

Sunday 11 February 2018 05:00am–07:00am UK GMT

Owing to remediation of an operational incident on the 29 January 2018, there will be an extended outage to Gemini of an additional 2 hours following the Sunday Gemini housekeeping window to failback the Gemini database to our primary site. No shipper, TSO activity or API access will be possible during the outage. Any files received during this period will be processed once the system becomes available.

Please be aware in accordance with UNC Section V a revision has been made to the Non Storage Supply (NSS) forecast number to take into account the status change of Rough Storage to Rough Production. It has also been evident that over the winter period flows have been consistently higher than the forecast numbers published in Winter Outlook 17/18 for categories including UKCS, Norway, and IUK. As a consequence of this the NSS forecast has been revised from 354mcm to 382mcm. This change will be effective from Gas Day 8 February 2018.

In addition, the Safety Monitor numbers in accordance with UNC Section Q have been changed to reflect the above. The requirements are published on our website and on the Joint Office website.

The Safety Monitor is there to ensure there is enough gas available for customers – that cannot be safely isolated (mostly domestic customers) – to remain supplied across the whole of the most severe winter. It also includes an amount required to isolate those customers that can be safely isolated (such as power stations and large industrial customers). It is there to ensure the safety and integrity of the system and customers – it is not to ensure security of supply. Further information can be found by accessing Transmission Operational Data, under the Pre-emergency notifications heading.

If you have any further questions or comments please contact the Operational Performance Manager Harjinder Kandola: 07896175660/ [email protected]

Enduring Solution Updates

25 January 2018

We will aim to provide an update at least every month with regards to this via the Operational Forum and MIPI News Item Updates.

Further Communication

25 January 2018

Please be advised that Centrica Storage Limited have requested to present at the Operational Forum on 25 January 2018 with regards to providing more detail on the REMIT notification. For details on the Operational Forum venue and Agenda please see the Operational Forum page.

In addition, National Grid will provide an update on MIPI progress and also take any questions you have.

In the interim, if you have specific questions in regards to the data please forward to: [email protected].

Kind regards,

Karen Thompson

Operational Liaison Manager

MIPI Maintenance

18 January 2018

Please be aware there will be a system outage taking place on Friday 19 January 2018. We do not expect MIPI to be impacted during the maintenance activity. Please find details below:

Implementation Start Time - 19 Jan 2018 09:00:00 BST

Implementation End Time - 19 Jan 2018 13:00:00 BST

If you have any queries on this please contact Box.[email protected].

Rough Storage classification change – MIPI reporting

15 January 2018

In relation to the REMIT notification published by Centrica Storage Limited (CSL) 15 January 2018:

http://www.centrica-sl.com/regulation/remit/2017-60a

Please note that it has been confirmed that for contractual purposes, Rough will be reclassified as a Production (sub-terminal) facility on the NTS from 00:01am on 17 January 2018.

This communication is to highlight to our customers how MIPI Operational Data associated with Rough will be displayed until an enduring solution can be implemented.

For Gas Day 16/01/18 all data held in MIPI and aligned to Rough will be in relation to Rough’s operation as a Storage Site.
For Gas Day 17/01/18 all data held in MIPI and aligned to Rough will be in relation to Rough’s operation as a Production Facility (sub-terminal) but will remain displayed under the Rough Withdrawal data item.

For the reports impacted, please see below:

Reports
- Daily Summary Report

Pre Day – Within Day
- Nomination Report

After the Day
- Aggregate Allocation Report
- NTS Commercial Entry End of Days
- NTS Physical Entry End of Days
- Storage and LNG Report
- Daily Balance Report

Monthly Reports
- Storage Withdrawals and Injection Allocations

For Data Item Explorer and for API users please note the above and manipulate the data accordingly.

MIPI UPDATE

13 January 2018

Please be aware the Storage stock information is missing from prevailing view for Gas Days 13 and 14 January 2018. We will provide further updates accordingly.

If you have any queries regarding this issue please contact us on: [email protected].

EU PHASE 4A

30 November 2017

Dear Colleague,

We are pleased to confirm the successful implementation of EU Phase 4a Transparency changes. These are summarised as follows:

Publication of Reserve Prices for KWh/day for Interconnection Points
Publication of charge for what it costs to flow 1 GWh/day/year for each Interconnection Point
Information to be published before the tariff period on the NG Webpage

User Guidance was emailed to the shipper community on 30 November. Please email: [email protected] with any queries.

Kind regards,

EU Gas Regulatory Change Programme, National Grid

EU PHASE 4A

30 November 2017

Dear all,

For awareness only - the last release within the EU Phase 4a project comprises some changes to the ENTSOG Transparency Platform and the publication of data on the National Grid Website which are due for go live tomorrow, 1 December 2017. The changes are necessary for us to meet our legal obligations but they are of low impact and we don’t anticipate many queries. We are pleased to confirm that these changes are already live and include:

Publication of Reserve Prices for KWh/day for Interconnection Points
Publication of charge for what it costs to flow 1 GWh/day/year for each Interconnection Point
Information to be published before the tariff period on the NG Webpage

These changes have been communicated during the last few months to the gas shipper community through the Gas Ops Forum and Transmission Workgroup. Please find enclosed User Guidance detailing the changes, just in case you get any queries. The guidance is being circulated via email to the gas shippers this afternoon.

Please do get in touch if you have any queries.

Kind regards,

Sarah

System Outage

20 November 2017

Please be aware that there will be a system outage taking place on 21 November 2017 (between 4:15pm–6:15pm) affecting the MIPI web service. This will affect the following reports:

AggregatePhysical NTS System Entry Flows (NTSAPF)
End Of Day Aggregate Forecast NTS System Entry Flows (NTSAFF)
System Status Information (NB92)
Calorific Value Report
PDWS hourly physical flow data

The Linepack swing report will also be affected.

Normal service should resume shortly after. We will provide regular updates following this outage. If you have any further questions please contact us on box.[email protected]

Clock Change

25 October 2017

The Gemini clock change from British Summer Time (BST) to Greenwich Mean Time (GMT) will be carried out on Sunday 29 October 2017.

The Gemini system will not change to GMT until 04:30am BST (03:30am GMT) on Sunday 29 October, the normal housekeeping slot will commence as per current BST time.

Please be aware that the system clocks will remain in BST until 04:30am and the system will close for housekeeping as normal at 03:00am BST. The systems will then return at the times given below.

Gemini Timetable (system times):

Start of outage: Sunday 29/10/17 at 03:00 BST (02:00 GMT)

End of outage: Sunday 29/10/17 to 05:00 GMT

Duration: Net outage - 3 elapsed hours

MIPI Outage 24 October 2017

23 October 2017

Please be aware that there will be a full system outage taking place on 24 October 2017 (between 07:00am–09:00am) and reports will be unavailable.

Normal service will resume after this period and all missing data will be patched.

If you have any further questions please contact us on [email protected]

Calculated Linepack Utilisation

29 September 2017

You may be aware that there has been discussion with the Gas Operational Forum with regards to pressure fluctuations experienced by our customers on the NTS. We have articulated to customers why these pressure fluctuations occur and why National Grid needs to utilise the full range of allowed pressure tolerances to meet both the supply and demand profile of all of our customers on the NTS.

One area of discussion has been around what further information/indication National Grid can provide to assist customers in managing operational requirements. As part of this, we are trialing a publication of a daily linepack (difference between NTS supply and demand) notification. This report is intended to help give an indication of what the linepack may be at the lowest point in the day, and this will be available from 2 October 2017 (T ransmission Operational Data). Where there is a large reduction in linepack, customers may experience reduced pressures around that point in time.

This report is based on hourly physical supply and demand flow notifications received from NTS connected sites and latest linepack of the Gas Day. The following points of caution should be noted.

- It is important to note that the physical notifications which will indicate a change to linepack are changed continually throughout the day by connected parties, and therefore linepack anticipated at the start of the day may be very different to the linepack seen later in the day. The report will be published at three key points within the gas day (06:00am, 12:30pm and 6:30pm) based on the latest information.

- It should also be noted that a large reduction in national NTS linepack does not mean all customers will experience reduced pressures. Locally, pressure can be significantly affected by the action of large locally connected sites and this can distort the effect of the national level linepack changes.

- Potential actions taken by customers in response to this report may in itself change the linepack experienced. This report is not able to inform customers what the linepack will be at a particular point in time; it indicates what the linepack would be based on the information we’ve received at that point in time.

- We will be seeking feedback from customers on how useful this report is, and we are continuing to work with customers to explore information that may help meet customer’s needs.

2017 Winter Webinars

29 September 2017

National Grid are pleased to announce that the 2017 Winter Webinars are now LIVE!

This year’s suite includes the following topics:

Gas System Pressures and Operational Tools

Recap summary of what affects NTS pressure
What has changed recently
What information is available from National Grid
What further information is being explored to help with pressure issues
Daily Agreed Gas Pressures Process & Operating Margins

Emergency Exercise

NEC background
Gas Deficit Emergency Stages and Actions
Information on Exercise Yield

Locational Trades/Constraint Management

Description of what Locational Energy Actions are
How National Grid communicates in the event of a Locational Action being carried out
A working example

REMIT Platform

Overview of GB Remit Policy
Navigating around the platform, including how to post an urgent market message

SO Key Documents

Documents covered: Winter Outlook/Review & Consultation + Gas Ten Year Statement/Future Operability Planning + Future Energy Scenarios
Content includes where the documents are published, how often they are published and what information they include for

MIPI – Common Queries

To include top 10 MIPI queries, including:

Storage & LNG report – discrepancy in figures
APIs – how to register
CV missing data
Actual offtake flows – missing data

Gas Operational Forum

Summary of general topics covered
Who attends?
Promote the changing nature of the forums – more interactive

Pre-Emergency Notifications

Gas margins/deficit warnings
Safety monitors

All such webinars have been pre-recorded for your operational convenience and have since been uploaded to the following webpage:

T ransmission Operational Data

We hope you find the webinars informative and useful and should you have any questions in relation to any of the published content, please do not hesitate to contact the Operational Liaison team at [email protected] who will be able to put you in touch with the appropriate expert.

MIPI data issues

4 September 2017

The issue that caused data inconsistencies on MIPI on Friday 1 September 2017 were resolved at midnight on the same day. There are some remaining data anomalies specifically around Flow Weighted averages for the end of day CV’s within the Calorific Value report in Data Item and the Energy Daily report within the Report Explorer page. These values are currently in the process of being corrected and will be available as soon as possible. For all other reports, all data is available for 1 September 2017 Gas Day.

We will provide a further update this week.

Apologies for the inconvenience caused.

For further queries please contact us on [email protected] or 01926656474

MIPI Data Issues

1 September 2017

Please be advised that data issues are currently being experienced that may impact data items within MIPI and the Gemini application. We are working on the issue and apologise for any inconvenience caused. Access to Gemini will remain unaffected.

Next update at 3:00pm.

For more information please contact us at [email protected]

MIPI Storage Stock Issue

25 August 2017

National Grid are aware of a current issue with reporting storage stock data via the MIPI publication. We are working on this issue currently and will provide a further update when a solution is identified.

We apologise for any inconvenience caused, for any urgent queries please contact:

[email protected] or 01926 656474

Consultation on potential operating margins incentive

17 August 2017

We are consulting on the potential re-introduction of a financial incentive for Operating Margin’s costs. These proposals are designed to help ensure that the costs customers pay for Operating Margins are kept to a minimum.

In May 2017 we sought views on whether our customers support the general principle that, as with other pass-through costs, Operating Margins costs should be subject to a financial incentive. We would now very much welcome your view on whether you feel the scheme parameters that we have proposed to Ofgem represent fair balance of risk and reward sharing between customers and National Grid.

Your views will be passed to Ofgem who will consider these when developing their thinking on this matter.

Please use this link to view the document. It sets out our rationale for incentivising Operating Margins, our proposed scheme, and it contains general background information. We would be very happy to discuss this further with anyone who may be interested to do so.

We would appreciate responses by 8 September 2017. However, if you would like to respond but are unable to do so by then for any reason please let us know. We would be happy to discuss these proposals further if you would like further information.

UK Link disaster recovery

16 August 2017

Xoserve will be conducting the 2017 UK Link disaster recovery test on Friday 18, Saturday 19, and Sunday 20 August 2017 as part of our annual programme of Disaster Recovery and resilience testing.

There will be a service MIPI outage during the following times:

- No new forecast weather in MIPI at 11:00pm UK BST on Friday for gas days Friday 18 and Saturday 19 August

- No new forecast weather in MIPI at 08:00am UK BST on Saturday 19 August for that gas day

- No new forecast weather in MIPI at 11:00pm UK BST on Saturday for gas days Saturday 19 and Sunday 20 August

- There will be a delay in the publication of actual weather data for gas day Friday 18 August in MIPI, this data will be published late morning on the 19August.

Normal service should resume after this period.

If you have any further questions please contact us on [email protected]

Update EU Gas Regulatory Change

15 August 2017

The first release of the 2017 EU Gas Regulatory Change programme went live on Sunday 13 August 2017 after a successful implementation.

Any Gemini system issues should be reported to the Xoserve Gemini Service Desk on 0845 600 0506.

Please email [email protected] for any other queries regarding these changes.

Please continue to use your usual contact routes for any operational day to day issues.

MIPI maintenance activity

11 August 2017

Please be aware there will be a system outage taking place intermittently on Saturday 12 August 2017. We do not expect MIPI to be impacted during the maintenance activity, however there is a possibility that the instantaneous flows page will not be available during 09:00am–2:30pm.

If you have any further questions please contact us on [email protected]

Update EU Gas Regulatory Change

11 August 2017

The next stage of EU Gas Regulatory Change goes live on Sunday 13 August with some changes to Gemini, addressing the requirements of CAM Code Amendments and some operational improvements.

The changes include:

Four auctions for IP Quarterly Capacity replaces one auction
IP Annual Yearly Auction is moving from March to July 2018
Two new reports: a) Entitlement versus Energy Allocation Report b) Utilisation Monitoring Report
Functionality for Negative Implied Flow Rates (Bacton IP only)

Guidance has been circulated to the shipper community this week.

The Gemini implementation is due to take place during the planned Gemini Maintenance Window (3:00am–5:00am).

Any Gemini system issues should be reported to the Xoserve Gemini Service Desk on 0845 600 0506.

Please email [email protected] for any other queries regarding these changes.

Please continue to use your usual contact routes for any operational day to day issues.

Update EU Gas Regulatory Change

4 August 2017

The next stage of EU Gas Regulatory Change goes live on the 13 August 2017 with some changes to Gemini, addressing the requirements of CAM Code Amendments and some operational improvements.

The changes include:

Four auctions for IP Quarterly Capacity replaces one auction
IP Annual Yearly Auction is moving from March to July
Two new reports: a) Entitlement versus Energy Allocation Report b) Utilisation Monitoring Report
Functionality for Negative Implied Flow Rates (Bacton IP only)

The Gemini implementation is due to take place during the planned Gemini Maintenance Window (3:00am–5:00am).

Any Gemini system issues should be reported to the Xoserve Gemini Service Desk on 0845 600 0506.

Please email [email protected] for any other queries regarding these changes.

Please continue to use your usual contact routes for any operational day to day issues.

MIPI maintenance activity

4 August 2017

Please be aware that there will be a system outage taking place intermittently on Saturday 5 August 2017 (between 09:00am–2:30pm) affecting the whole MIPI web service.

Please note that all reports will be affected.

Normal service will resume at 2:30pm.

If you have any further questions please contact us on [email protected].

MIPI outage

27 July 2017

Please be aware that there will be a system outage taking place on 28 July 2017 (between 05:00am–05:30am) affecting the whole MIPI web service.

All reports will be affected.

Normal service will resume at 05:30am.

If you have any further questions please contact us on [email protected]

System outage affecting MIPI

25 July 2017

Please be aware that there will be a system outage taking place on 27 July 2017 (between 4:00pm–11:00pm) affecting the MIPI web service. This will affect the following reports:

AggregatePhysical NTS System Entry Flows (NTSAPF)
End Of Day Aggregate Forecast NTS System Entry Flows (NTSAFF)
System Status Information (NB92)
Calorific Value Report
PDWS hourly physical flow data

Normal service should resume shortly after. We will provide regular updates following this outage.

If you have any further questions please contact us on [email protected]

Instantaneous flows- update

1 June 2017

The issue with the instantaneous flows data has now been resolved. Thank you for your patience.

Instantaneous flows issue

1 June 2017

We are aware of the issue with the instantaneous flows page not updating since 7:45pm last night. We are investigating this issue and hope to get it resolved as soon as possible. We will keep you informed of progress.

Gemini outage

25 May 2017

A Gemini outage of 2 hours will take place on 31 May 2017 between 04:15am and 06:15am.

If you have any queries, please contact us [email protected].

MIPI data discrepancies

17 May 2017

Please be aware we have identified small data discrepancies with the MIPI (SISR04) D+6 Actual Demand for the following days:

27 February 2017
28 February 2017
1 March 2017
8 March 2017
9 March 2017
24 March 2017
26 March 2017
27 March 2017
28 March 2017

This has now been rectified and we apologise for any inconvenience caused.

Storage stock level information

12 May 2017

Please be aware that we have been experiencing an issue with the provision of the Storage stock information and NTS Shrinkage Data to MIPI.

We have been working hard to understand the root cause of this issue and have a temporary solution in place from today and as such we expect this information will be available from Gas Day 12 May 2017. A solution to fully address the root cause will be implemented as soon as possible.

If you have any queries on this please contact [email protected].

MIPI data inconsistencies update

12 May 2017

On 30 July 2016 National Grid Transmission successfully implemented the Gas Control Suite (GCS) which replaced an aging control system with a more flexible solution to meet the new challenges of managing the network. This also provided the following capabilities:

Physical control of the UK bulk gas transmission network
Higher reliability, more secure system with next generation operator user interfaces (first total makeover since 1990s)
Commercial UK gas market facilitation and operation
Flexible solution that can rapidly be adapted to regulatory or market change with state of the art easy access data visualisation

Following GCS there were some inconsistencies in the data that was reflected in MIPI/GMRS.

The project team have been working hard to resolve the outstanding issues and as such we sent a communication on 31 March 2017 to highlight that these should be resolved by the end of May 2017. A progress update can be summarised as follows:

Demand actual data D+1 (SISR04 and Data Item Explorer)

This data has been consistently available since 3 November 2016.

Since GCS implementation however, there have been some inconsistencies with this data and therefore all existing D+1 data was deleted between 29 July 2016 until 2 November 2016. This data will not be retrospectively added back into MIPI as the more accurate D+6 data is available.

Demand actual data D+6 (SISR04 and Data Item Explorer)

All data for the missing period between 23 July 2016 and 11 February 2017 has now been retrospectively added back into MIPI ahead of the forecasted completion date.

Weather Data (Operational Summary Report)

The weather data item within this daily report has not been available since GCS implementation. From 26 May 2017 this specific data item will be published within the daily reports. The aim was to have the retrospective patching of missing data completed by the end of May 2017, however priority was given to ensure the D+6 data was available sooner. The retrospective weather data will now be available by 23 June 2017.

Demand data update

11 May 2017

As you will be aware on 30 July 2016 National Grid Transmission successfully implemented the Gas Control Suite (GCS) which replaced an aging control system with a much more flexible control system to meet the new challenges of managing the network. This also provided the following capabilities:

Physical control of the UK bulk gas transmission network
Higher reliability, more secure system with next generation operator user interfaces (first total makeover since 1990s)
Commercial UK gas market facilitation and operation
Flexible solution that can rapidly be adapted to regulatory or market change with state of the art easy access data visualisation

Following GCS there were some data inconsistencies in the data that was reflected in MIPI/GMRS, most of which have been resolved.

A few remaining issues exist which the project team have been working hard to resolve. These will be resolved by the end of May 2017. The outstanding issues can be summarised as follows:

Demand actual data D+1 (SISR04 and Data Item Explorer)

This data has been consistently available since 3 November 2016.

Since GCS implementation there have been some data inconsistencies with this data and therefore all existing D+1 data has been deleted since 29 July 2016 until 2 November 2016. This data will not be retrospectively added back into MIPI as the more accurate D+6 data is available.

Demand actual data D+6 (SISR04 and Data Item Explorer)

All data is correct since 12 February 2017.

The historic data has not been available in MIPI from 23 July 2016 until 22 February 2017. All data for this period will be retrospectively added back into MIPI by mid-May 2017. News items will be posted onto MIPI as this progresses.

Weather Data (Operational Summary Report)

The weather data item within this daily report has not been available since GCS implementation. From mid-May 2017 this data item will be published and hence the report will be complete from that point onwards. The retrospective patching of missing data will commence as soon as possible and we aim to have this completed by the end of May 2017.

Capacity Availability (NORD07)

An issue has been identified with this report and we are working to understand the root cause of this issue.

Procurement guidelines 2016-2017

28 April 2017

Please be aware that the Procurement Guidelines Report covering the period 1 April 2016 to 31 March 2017 is now available on the Procurement and System Management Documents page.

Prevailing View - GDW/MN values

6 April 2017

As you may be aware, as a result of March 2017 Clock Change activities there is slight delay in the GDW and MN Trigger values displaying on time. For each Gas Day the value for ‘Tomorrow’ should move over to the value for ‘Today’ as of 05:00am. However, there is a delay with this information moving across where the values are moving over at 06:15am in the first instance. Going forward there is a fix for the system currently planned for 14 April 2017.

We would like to thank everyone for their patience in resolving this issue.

Please contact the e-mail address below if you have any further queries: [email protected]

Operational news archive

GCS Outage - Tuesday 10th December 2019 16:00 - 20:00

Please note there have been some changes to the dates of outages detailed below

National Grid IT System Outage - 30th November 2019 16:00hr–23:00hr

National Grid IT System Outage – 3rd December 2019 16:00hrs–19:15hrs

National Grid IT System Outage – 5th December 2019 16:00hrs–19:15hrs

Gemini EFT Outage

MIPI Issues – Data Publication

National Grid IT System Outage - 05th November 2019 16:00hr–21:00hr

CANCELLED: National Grid IT System Outage - 16th November 2019 16:00hr–23:00hr

CANCELLED: National Grid IT System Outage – 19th November 2019 16:00hrs–19:15hrs

CANCELLED: National Grid IT System Outage – 21st November 2019 16:00hrs–19:15hrs

October Clock Change

FWACV Process

GCS System Essential Work - Monday 7th October 2019 16:15 - 16:45

Changes to Gas Security Notifications

GB EU Charging Project - Go Live Successful

GB EU Charging Project - GO Live this Sunday 8th September

Modifications/Change Variations driving the 8th September 2019 Go Live

611 – Amendments to the firm capacity payable price at Interconnector Points

597 - Rules for the Release of Incremental Capacity at Interconnector Points

Gemini Live Capacity versus Nominations Report

Gemini Day Ahead and Within Day Auctions automated for GNCC

GCS Outage - Tuesday 20th August 2019 16:00 - 20:00

UK Link Disaster Recovery

Potential Impact to API Flows for GB Short Term Entry Auctions

GCS Outage - Thursday 4th July 2019 17:50–18:50

MIPI Outage

GCS Outage – Wednesday 19th June 2019 17:00pm–20:00pm

GCS Outage – Tuesday 4th June 2019 16:00pm–20:00pm

Emergency MIPI Maintenance

MIPI issue

MIPI issue

Emergency GCS Outage - Thursday 2nd May 2019 16:00pm – 20:00pm

MIPI Outage

Gemini Disaster Recovery

Gemini Disaster Recovery

Clock Change 2019

MIPI Issues

MIPI Outage

GCS Outage

GCS Outage

MIPI Maintenance

GCS Changes

MIPI Issue

MIPI Issue

MIPI Maintenance

Gemini Extended Outage

MIPI Maintenance

Xoserve Update

Emergency Change - GCS Outage - Wednesday 21st November 2018 16:00pm–18:00pm

Gemini Extended Outage

October Clock Change

MIPI Maintenance

GCS Outage - 6th November 2018 16:00–20:00

GCS Outage - Tuesday 19 June 2018 4:15pm–7:15pm

Rough Storage Classification Change - MIPI Reporting

MIPI Outage - 14 May 2018

MIPI UPDATE

Procurement guidelines 2017-2018

MIPI UPDATE

Clock Change

MIPI Data Availability

MIPI UPDATE

MIPI UPDATE

MIPI UPDATE

Non Storage Supply Forecast Update

MIPI GMRS DR TEST - Update

MIPI UPDATE

MIPI UPDATE

MIPI Planned Outage

Gemini Extended Outage

Enduring Solution Updates

Further Communication

MIPI Maintenance

Rough Storage classification change – MIPI reporting

MIPI UPDATE

EU PHASE 4A

EU PHASE 4A

System Outage

National Grid IT System Outage - 30^th November 2019 16:00hr–23:00hr

CANCELLED: National Grid IT System Outage - 16^th November 2019 16:00hr–23:00hr

GCS Outage - Thursday 4^th July 2019 17:50–18:50

GCS Outage – Wednesday 19^th June 2019 17:00pm–20:00pm

GCS Outage – Tuesday 4^th June 2019 16:00pm–20:00pm

Emergency GCS Outage - Thursday 2^nd May 2019 16:00pm – 20:00pm