LISBON (Reuters) - China’s state-owned utility China Three Gorges on Friday launched a bid to take control of Portugal’s biggest company EDP, offering a premium of just below 5 percent on the power firm’s closing stock price.

FILE PHOTO: Banners bearing the logo of Energias de Portugal (EDP) are seen at the company headquarters in Lisbon, Portugal, December 13, 2011. REUTERS/Jose Manuel Ribeiro/FILE PHOTO

The total value of the proposed deal is 9.07 billion euros ($10.83 billion), excluding a 23 percent stake already owned by CTG [CYTGP.UL], the Chinese firm and largest EDP EDP.LS shareholder said in a statement issued late on Friday in Lisbon.

Reports that EDP may be an acquisition target of European foreign companies have been circulating for over a year, during which CTG continued to raise its stake, culminating in the 3.26 euros ($3.89) a share offer.

CTG said in its preliminary offer announcement that it seeks to reach at least a 50 percent voting stake plus one share in the company. It also offered 7.33 euros a share for EDP's wind power unit, EDP Renovaveis EDPR.LS, below its closing price of 7.84 euros.

EDP had no immediate comment. The online edition of the Expresso newspaper said earlier that EDP was likely to consider the offer hostile.

If the deal succeeds, it would be the latest in a series of acquisitions by Chinese companies in Portugal. They have been actively buying assets, from infrastructure to insurance and banking, since Portugal’s 2010-13 debt crisis.

EDP is an integrated generator, supplier and distributor of electricity, the largest company by assets in Portugal with businesses in Brazil ENBR3.SA, Spain, and the United States.

CTG said it was “fully committed to preserving EDP’s Portuguese identity and autonomy as well as its current Portuguese public listing”.

Prime Minister Antonio Costa told reporters earlier that the Portuguese government had no objections to the bid.

“The government has nothing against it, no reservations,” Costa said, adding though that the government does not have to be consulted. “The Chinese have been good investors, be it in REN, EDP or in other sectors ... The important thing is that shareholders can ponder on the project. Let the market work.”

The proposed offer may test the European Union’s readiness to give control of major infrastructure firms in member states to China, however. It could also run into problems with U.S. authorities since EDP Renovaveis (EDP Renewables) is a major player in its wind energy market.

Another Chinese state company, CNIC, holds a nearly 5 percent stake in EDP, while other leading shareholders include U.S. financial services company Capital Group, with 12 percent, and U.S. private equity firm Blackrock.

EDP’s market capitalization was nearly 11.4 billion euros as of Friday. It has a net debt of 13.8 billion euros.

The company serves almost 10 million power market clients and 1.6 million natural gas customers and runs over 330,000 kilometers (205,000 miles) of power transmission lines.