The 20% wind scenario and integration into the US electric system

A major power system challenge to achieving 20 percent of U.S. electric energy from wind energy is to reliably balance electrical generation and load over time with a large portion of energy coming from a variable, non-dispatchable power source. While this is a substantial challenge, with some changes in power system operation and planning, there would be no insurmountable technical barriers to achieving the 20% wind scenario while maintaining reliable service and reasonable electricity rates.