The sluice gates of the Three Gorges Dam. [Photo/Xinhua]

China Three Gorges, which operates the world's largest hydropower plant on China's Yangtze river, will buy German offshore wind park Meerwind from US buyout firm Blackstone, the companies said on Monday.

The terms of the sale were not disclosed but people familiar with the process said they expected it to be valued at around 1.6 billion euros ($1.8 billion).

China Three Gorges, which seeks to expand beyond hydropower as it faces a saturated domestic hydro market, will buy Blackstone's majority interest in WindMW GmbH, an offshore wind power joint venture. WindMW owns Meerwind, a 288 megawatt project in the North Sea and one of Germany's largest offshore windfarms.

Earlier report said that China Three Gorges was closing in on a deal.

The agreement was signed on Monday in the presence of Merkel and Chinese Premier Li Keqiang, the statement said.

It was one of a number of deals expected to be signed during Merkel's visit. Airbus agreed to sell 100 helicopters to a Chinese consortium on Monday, while Daimler AG and its Chinese partner, BAIC Motor, pledged to jointly invest 4 billion yuan ($607.53 million)to expand engine production.

Bremerhaven-based WindMW is 80 percent owned by Blackstone and 20 percent by Windland Energieerzeugungs GmbH, and provides electricity for up to 360,000 households. The present management team will continue to operate the business.

Jefferies, PJT Partners and Bank of America Merrill Lynch acted as financial advisors to Blackstone.