Avista Corp is a utility company based in Spokane, Washington, providing electric and natural gas services. It serves customers in eastern Washington, northern Idaho, and parts of Oregon, with electricity generation coming from hydroelectric, thermal, wind, and solar facilities. Avista also operates in Juneau, Alaska, through its AEL&P segment, focusing on electric services. The company, established in 1889, supports around 416,000 electric and 381,000 natural gas customers. Avista's commitment to renewable energy is evident in its diverse electricity generation portfolio, including hydroelectric and diesel facilities.