In 2015, about 85% of PenLight’s wholesale power purchases came from BPA hydropower, while 9% came from the Columbia Generating Station, a nuclear power plant in south-central Washington, and 3% came from our Harvest Wind project. Only 3% came from fossil fuels (2% was coal and 1% natural gas).  Find more detailed information at https://www.penlight.org/energy-services/power-resources/.