Gamesa, Siemens Negotiating Wind Merger Terms

German engineering group Siemens and Spanish renewable energy group Gamesa are in final negotiations on a deal to merge their wind power assets, two sources familiar with the situation told Reuters on Wednesday.

"They are all sitting together in Madrid at the moment," one of the sources said. "The deal is imminent. The enterprise value of the joint venture is close to 10 billion euros ($11 billion)."

Reporting by Alexander Huebner and Jose Elias Rodriguez