Our response to coronavirus

Find out how we're working to keep the electricity and gas flowing reliably throughout the outbreak.

Network capacity and cost tool

Our digital research functionality

Our digital ambition places our customers at the heart of everything we do, and we recently launched a new suite of tools to help research and manage connections to the Electricity Transmission system in England and Wales.

Try our research functionality which combines the previous Network Capacity Map and introduces more accurate costing tools all in one package. You can also use the new tool to enquire about potential new connections:

Research assistant ConnectNow

ConnectNow Research Assistant

Our Research Assistant is an innovative tool that combines our popular Network Capacity Map and Cost Estimator tools into a single, intuitive application.  

Use it to investigate capacity, connection options available to you and see estimated cost profiles and associated securities. You can also enquire directly to National Grid Electricity Transmission through the portal for your chosen connection

ConnectNow Research Assistant
ConnectNow portal

ConnectNow Portal

Our customer portal has been designed to enable you to track your connection projects, from initial application right through to being connected to us.

Within the portal:

- Track your application through National Grid and milestones such as Consents and Completion dates
- Have greater transparency on your costings in one secure environment
- Access the contact information of all your key connections team

ConnectNow Portal

FAQs and Connection

Here we answer questions we're frequently asked about the ConnectNow portal and the Connections process.

Connections FAQs

Have you seen the different stages of the connection process? Find out more:

Connection process

Terms and conditions

Do you need some guidance to use the capacity network Map and get your data?

What are you planning to connect?

What type of connection?

What capacity are you connecting? (MVA)

Do you have an idea of where you want your connection?

Do you have an idea where do you want your connection?

Low — less than 10% total site capacity still available
Medium — 10% to 25% total site capacity still available
High — 25% total site capacity still available
ID Name Demand Headroom Generation Headroom Fault Level Headroom Number of Tertiaries Available


Substation Name:

Substation Type:

Voltage Level:

Substation Technology:


Spare Bays:

Spare Tertiaries:

Demand Information

Demand Capacity: MW

Peak Demand: MW

Demand Headroom: MW

Demand Potential:

Generation Information

Generation Capacity: MW

Connected Generation: MW

Contracted Generation: MW

Generation Headroom: MW

For any queries over 1,000 MW, please contact us via the Enquire button below.

Generation Potential:

Fault Level Information

Fault Level 3Ph Rating: kA

Fault Level 3Ph Fault Level: kA

Fault Level 1Ph Rating: kA

Fault Level 1Ph Fault Level: kA

Fault Level Headroom: kA

Fault Level Limitation:

Average Sunshine and Wind

Sunshine iconSunshine: hours/month

Wind speed iconWind speed: knots

Climate average data provided by the Met Office from the period of 1981-2010.

Connection Information

Point of Connection Cost: £k

Average Reinforcement Cost:

Indicative Timescale:

Technology Availability: