The project

IFA2 will connect the electricity systems of Great Britain and France using high-voltage direct current (HVDC) cables from Normandy in France to Fareham in Hampshire.

This section sets out the work we are doing to build each of these components in the approach to going live in 2020.

Great Britain

In Great Britain, the grid connection point will be a new substation at an existing National Grid site off Chilling Lane near Warsash, Hampshire. The converter station will be on a site near Solent Airport, between the communities of Fareham, Stubbington and Lee-on-the-Solent.

The connection between the converter station and connection point at Chilling will use high-voltage alternating current (HVAC) cables that will run from the converter station to the sea, buried in the seabed to a landfall at Brownwich near Chilling then underground to the substation at Chilling.


In France, the cable will make landfall at a site close to Merville-Franceville-Plage in Normandy. The connection point will be at Tourbe 400kV substation, with the converter station located at an adjacent site. You can find out more about the French side of the project on RTE’s website.