The authorities has fixed the last go-ahead for a £38bn atomic powerfulness works successful eastbound England.
The Sizewell C task successful Suffolk volition beryllium jointly funded by Canadian pension money La Caisse, UK vigor steadfast Centrica and Amber Infrastructure.
The Department for Energy Security & Net Zero (DESNZ) said Sizewell C volition present cleanable powerfulness for the equivalent of six cardinal homes, arsenic good arsenic enactment 10,000 jobs and make 1,500 apprenticeships erstwhile it is operational, which is expected to beryllium successful the 2030s.
The authorities volition beryllium the largest shareholder successful the task with a 44.9% stake. La Caisse volition clasp a 20% stake, Centrica 15% and Amber Infrastructure volition instrumentality an archetypal 7.6%.
Earlier this month, French vigor elephantine EDF announced it was taking a 12.5% stake, little than its antecedently stated 16.2% ownership.
Sizewell C was initially projected by EDF and China General Nuclear Power Group successful the aboriginal 2010s, but successful 2022 the Conservative authorities bought the Chinese institution out.
The outgo of operation was forecast to beryllium astir £20bn by EDF 5 years ago.
DESNZ said the outgo is astir 20% cheaper than the improvement of the Hinkley Point C atomic powerfulness presumption successful Somerset.
Energy Secretary Ed Miliband said: "It is clip to bash large things and physique large projects successful this state again - and contiguous we denote an concern that volition supply clean, homegrown powerfulness to millions of homes for generations to come.
"This authorities is making the concern needed to present a caller aureate property of nuclear, truthful we tin extremity delays and escaped america from the ravages of the planetary fossil substance markets to bring bills down for good."
Chancellor Rachel Reeves said: "La Caisse, Centrica and Amber's multibillion-pound concern is simply a almighty endorsement of the UK arsenic the champion spot to bash concern and arsenic a planetary hub for atomic energy.
"Delivering adjacent generation, publically owned cleanable powerfulness is captious to our vigor information and growth, which is wherefore we backed Sizewell C."
Alison Downes of run radical Stop Sizewell C said: "This much-delayed last concern determination has lone crawled implicit the enactment acknowledgment to guarantees that the nationalist purse, not backstage investors, volition transportation the tin for the inevitable outgo overruns.
"Even so, UK households volition soon beryllium deed with a caller Sizewell C operation taxation connected their vigor bills. It is astounding that it is lone now, arsenic contracts are being signed, that the authorities has confessed that Sizewell C's outgo has astir doubled to an eye-watering £38bn - a fig that volition lone spell up. Given that ministers claimed not to recognise the outgo was adjacent to £40bn is determination immoderate wonderment determination is truthful small spot successful this project?"
The authorities considers atomic powerfulness to beryllium an progressively important vigor root arsenic it seeks to decarbonise Britain's vigor grid by 2030.
The past clip Britain completed a atomic works was the Sizewell B works successful 1987.