Yesterday, Colorado governor Bill Ritter signed legislation increasing his state’s renewable portfolio standard from 20% to 30%. The law will require large utilities to generate 30% of their electricity from renewable sources by the year 2020.

Colorado’s 30% standard is one of the most aggressive in the country. About half of the states currently have some form of renewable energy standard in place; California’s standard—33% by 2020—is the country’s strictest.

A spokesperson for Xcel Energy, the state’s leading electric utility, has announced the company’s support of the law.

National Wind is currently developing one project in Colorado, NECO Wind, a 650 megawatt project in Logan, Sedgwick and Phillips Counties. NECO has signed 92,000 acres, and planning for the project’s first phase, 30 MW located in Phillips County, is well underway.