Reuters: The final phase of a 300-megawatt wind farm in Colorado that will make enough electricity to power about 90,000 homes has begun commercial operation, the developers said Thursday. Most of the Cedar Creek wind farm, about 100 miles northeast of Denver, opened in November and the last 20 megawatts have now begun operation and selling power, Babcock & Brown Wind Partners fund and BP Alternative Energy said. Babcock & Brown said the wind farm near Grover, Colorado in Weld …