Xcel Energy to add more solar power in Colorado

The utility filed its plan for meeting the standard, which requires 20 percent of its energy to come from renewable resources by 2020. The solar power would be added through a program in which Xcel buys renewable energy credits from customers who install solar power systems.

Xcel Energy's plan also includes about 700 megawatts of new wind power and about 350 megawatts of utility-scale solar power plants.

Gov. Bill Ritter praised Xcel for planning to add more than three times the amount of solar photovoltaic resources than the law requires.