Fortum, Finland's top energy group, said late on Tuesday it signed a deal to develop a nuclear power plant in Bulgaria with the country's national utility NEK and Russian state atomic energy corporation Rosatom.
"Fortum has reserved an opportunity to obtain a 1 percent share of the equity in the project company that will be established and will be the owner of the power plant and the electricity generated by it," Fortum said in a statement.
The Belene plant is to consist of two Russian VVER-type pressurized water reactors with 1,050 MW capacity each.
Earlier this month Fortum signed another memorandum of understanding with Rosatom on cooperating on nuclear power operations.
The Finnish utility owns the Loviisa nuclear plant, which accounts for about a tenth of Finland's electricity production. Earlier this year it failed to receive government backing to build a new nuclear reactor in its home market.