US-based Xcel Energy has added more than 257MW of solar power to its plan for meeting Colorado’s renewable energy standard by 2020.

The utility filed its plan for meeting the standard, which requires 20% of its energy to come from renewable resources by 2020.

The solar power would be added through a programme in which Xcel buys renewable energy credits from customers who install solar power systems, writes the Associated Press.

The company’s plan also includes about 700MW of new wind power and about 350MW of utility-scale solar power plants.