Avista Corporation operates as an electric and natural gas utility company. It operates through two segments, Avista Utilities and AEL&P. The Avista Utilities segment provides electric distribution and transmission, and natural gas distribution services in parts of eastern Washington and northern Idaho; and natural gas distribution services in parts of northeastern and southwestern Oregon, as well as generates electricity in Washington, Idaho, Oregon, and Montana. This segment also engages in the wholesale purchase and sale of electricity and natural gas. The AEL&P segment offers electric services to approximately 17,000 customers in the city and borough of Juneau, Alaska. The company generates electricity through hydro, thermal, and wind facilities. As of February 8, 2019, it provided electric service to approximately 393,000 customers and natural gas to approximately 361,000 customers. In addition, the company engages in venture fund investments, real estate investments, and other investments. Avista Corporation was founded in 1889 and is headquartered in Spokane, Washington.