The largest wind farm in the world is being constructed on the Oregon-Washington border near Walla Walla, Washington.
Electricity providers in Arizona will have to increase the amount of renewable energy resources that they use.
The Emerald People's Utility District near Eugene, Ore., plans to provide "green power" to its customers, encouraging energy production that doesn't harm air quality or salmon.
Residents of a Steamboat Springs, Colo., neighborhood that is powered by solar and propane energy, are upset with CEO Jim Mann's plans to power the 21,000 sq.-ft. house he wants to build there with electricity from the grid.
A report by the U.S. Geological Survey, "Tapping the Earth's Natural Heat," discusses geothermal power and its possible impacts on the environment.