Iberdrola SA said Monday it has agreed to sell its 50% stake in U.K. nuclear consortium NuGeneration Ltd. to Toshiba Corp. unit Westinghouse Electric Co for GBP85 million ($139 million.) The deal resurrects a key project to build a new nuclear power station in England and boosts the Japanese company's ambitions to expand in Europe
Iberdrola SA said Monday it has agreed to sell its 50% stake in U.K. nuclear consortium NuGeneration Ltd. to Toshiba Corp. unit Westinghouse Electric Co for GBP85 million ($139 million.)

The deal resurrects a key project to build a new nuclear power station in England and boosts the Japanese company's ambitions to expand in Europe.

NuGen is one of three big consortia aiming to build nuclear power plants in the U.K., but the least advanced. Momentum for the project foundered in the past year after Iberdrola, the Spanish power giant, said it was looking to sell its stake as it restructured its business and cut debts.

The current plan envisions constructing a 3.6-gigawatts nuclear power station in West Cumbria in northern England. It is an important part of a U.K. government effort focused on new nuclear power to help secure electricity supplies as old coal and nuclear plants are shuttered over the next decade. The government wants low-carbon nuclear energy to help meet legislated targets to cut greenhouse gas emissions.

In October, London reached a deal with Electricité de France SA, which is working with Areva SA, China General Nuclear Corp. and China National Nuclear Corp., to guarantee the price for power generated from their own plant, which will be the first constructed in the U.K. in almost 30 years.

A foothold in the U.K., is important to Toshiba unit Westinghouse, which sees the country as a steppingstone to growing its nuclear business internationally after the 2011 Fukushima reactor disaster in Japan. Prospects for the nuclear-power market have also dimmed in the U.S., where a natural-gas glut has made gas-powered plants cheaper to run.

It isn't Westinghouse's first attempt to enter the U.K. nuclear sector. Last year, the company was unsuccessful in efforts to buy Horizon Nuclear Power, which plans new nuclear plants in Wales and Gloucestershire in England. Westinghouse lost out to Japanese rival Hitachi Ltd.

The NuGen consortium still faces several hurdles: The group needs to extend the option on the land where it wants to build the new power station, since it is unlikely to meet a deadline to submit a planning application before the end of 2014. Westinghouse also needs to get its AP1000-model nuclear reactor licensed for use in the U.K., and that process could take years.

The NuGen consortium paid GBP70 million in 2009 for the option on the land in Cumbria. NuGen plans to make a final investment decision in 2015 and, if the plan goes ahead, commission the new nuclear plant in 2023.

France's GDF Suez SA, which holds the other 50% stake in NuGen, declined to comment.