On these pages you will find out more about how the National Transmission System (NTS) handles entry and exit capacity, including how to bid for entry capacity and apply for exit capacity. You will also be able to retrieve current and historical capacity data on these pages.
This page provides an overview of entry capacity including the types of capacity available, the different types of auctions, and the responsibilities of users and National Grid.
This page provides an overview of exit capacity including the types of capacity available, the different types of applications, and the responsibilities of users and ourselves.
Latest capacity update
The Annual Monthly System Entry Capacity (AMSEC) auction starts on Monday 12th February and is open on the 12th, 15th, 20th and 23rd February. with allocations takiing place on the same day
On 1st January 2018 users can request Capacity Conversation at Interconnectors. Information on how to complete this can be found in the PDF under 'Proformas' below
Capacity gives shippers the right to flow gas on and off the National Transmission System (NTS), and so capacity is often also referred to as ‘rights’ or ‘entitlements’. A shipper needs to buy one unit of capacity in order to flow one unit of energy on or off the system. This is known as the ‘ticket to ride’ principle. Units for both capacity and energy are in kWh/day.
Gemini contingency arrangements
Here you will find guidance on the Gemini Code contingency arrangements should a failure of the Gemini system occur. The processes detailed on here should only be followed when we have declared a Code contingency.
When contingency arrangements are being used, news updates will be provided via the standard communications channels:
Active notification system (ANS)
Prevailing view section of MIPI including the MIPI news area (office hours only)
Processes to be followed and proforma to be used in the event of a Gemini Code contingency are located here: