Swansea tidal lagoon: £1bn scheme included in Budget 2015
Chancellor George Osborne has said negotiations are opening on a £1bn tidal lagoon scheme in Swansea, in his Budget speech in the House of Commons.
The plan would see a giant manmade lagoon generating power to run 120,000 homes for 120 years.
Talks will focus on the amount of subsidy the scheme will get from a guaranteed price for its power.
In December, Energy Secretary Ed Davey announced "in-depth discussions" on the project had started.