ISTANBUL, March 11 (Reuters) - Turkish energy and construction company Enka Insaat ENKAI.IS is in talks with South Korean company KEPCO 015760.KS to build a nuclear power plant on Turkey's Black Sea coast, a source at Enka told Reuters on Thursday.

Newspaper Milliyet had reported Enka was planning on taking a 50 percent stake in a consortium to build the nuclear power project on Turkey’s Black Sea coast, seen costing $20 billion.

The Enka source said the company had not yet determined a clear stance on the project.

Turkey is in talks with KEPCO to build the Black Sea plant, and Turkey signed an agreement with the company on Wednesday to expand cooperation in potential nuclear operations. [ID:nLDE6290HI]

The power plant will be built with 6 reactors, each with a capacity of 1,400 megawatts, Milliyet said.

Turkey is currently planning to build two nuclear power plants to reduce its dependence on natural gas, the vast majority of which it imports from Russia and Iran.

Economic growth is expected to boost consumption and the country is in need for additional energy investments to avoid power shortages in coming years. (Editing by Dan Lalor)