Russia's Inter RAO and Gazprom will sign agreements on energy projects with Turkish companies, Russian Energy Minister Sergei Shmatko said at a news conference on Tuesday.
Russian Prime Minister Vladimir Putin is expected to visit Turkey on Thursday to work out details of several energy projects, including an invitation to take part in Moscow's giant pipeline project South Stream.
Turkish Energy Minister Taner Yildiz said on Tuesday Turkey was still assessing Russia's invitation, and an Energy Ministry source added that a protocol would be signed during Putin's visit to carry out a seismic study on the South Stream's proposed route through Turkish territorial waters.
Turkish and Russian energy ministers said on Tuesday numerous energy projects were waiting for the private sectors of each country.
"There will be signatures between Gazprom and Inter RAO with Turkish companies," Russian Energy Minister Sergei Shmatko told journalists at the conference.
Turkey and Russia already have trade relations worth around $40 billion.
Turkish Energy Minister Taner Yildiz said at the joint news conference that Turkish companies including Aksa Enerji and Calik Holding would sign agreements to cooperate with Russian firms in the oil, natural gas and power sectors.
Gazprom is already a major natural gas supplier and accounts for nearly two-thirds of Turkey's annual gas imports. Inter RAO is a member of a consortium that aims to build Turkey's first nuclear power plant.
The Russian firm, along with Atomstroiexport and Park Teknik were the sole bidders in a tender to build the nuclear power plant. Final approval of the deal has been delayed pending a price revision from the Turkish-Russian consortium.
The European Union and Turkey last month signed a transit deal for the Nabucco pipeline, which aims to reduce Europe's energy dependence on Russia, introducing a new flow of gas from the Caspian and Middle East.
Russian officials have said they plan to complete their South Stream pipeline project ahead of the Nabucco.