August 5, 2011. Blackstone is set to announce its largest renewable energy deal with the investment of a combined 2.5 billion euro ($3.5 billion) into the construction of Germany's biggest ever offshore wind farm. The U.S. private equity firm group will announce that it has secured financing for an 80-turbine wind farm in the North Sea, which it plans to complete constructing by 2013. The 1.2 billion euro project, dubbed ''Meerwind,'' which was first announced in 2008, is set to produce enough power to service 40,000 households. Blackstone will also unveil plans for an estimated investment of 1.3 billion euro in a project of 64 wind turbines for which it has already acquired a permit.