National Grid has a statutory obligation to connect new electricity generators to the high-voltage transmission network.  We have received an application from British Energy Generation Limited (now part of EdF Energy) to connect a 3600MW nuclear power station at Hinkley Point by September 2017.

The power station would comprise two 1800MW European Pressurised Water Reactors (EPRs).  It would be one of the largest single generators connected to our system and, as a result, we will need to reinforce and upgrade the network in the region to accommodate the extra power and ensure system security. This will include replacing wires on existing over head line routes and upgrading some substations.

A new 400,000 volt overhead line between our Bridgwater and Seabank (Avonmouth)substations is the most efficient and economic way to accommodate the additional power from Hinkley Point C.

This route will also be essential to help connect other power generation facilities which are planned in the area and will help the Government meet its renewable energy targets by 2020.

Where will the new power line go?

Two broad route corridor options for the new line between Bridgwater and Seabank have been identified by National Grid, taking into account our statutory duties.

Our proposals for the new overhead line are still in their early stages. Public consultation is currently being carried out about the different route corridor options until 8 January 2010. For more information about how you can comment on our proposals and to see a map and brief description of the corridors, click on the links on the links on the right of this page.  

Depending upon the final route, the overhead line would be approximately 37 miles (60km) in length.