Reactor designer Rolls-Royce will announce that a consortium of investors will back plans for a new smaller nuclear reactor project.
As part of its 10 point green energy plan, the government has already announced it would provide £210m in funding if that could be matched by private capital.
Around 21% of Britain's electricity supply is provided by nuclear power.
The plan is thought to include the construction of an initial four Small Modular Reactors (SMRs) based on the technology used in nuclear powered submarines.
These reactors will be capable of generating nearly 500 megawatts of power - three times as much as much as most existing nuclear submarine reactors but more than six times less than the 3.2 gigawatts that the large plant under construction at Hinkley Point will deliver. Hinkley is expected to produce enough power to supply 6 million homes.
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