b'Avista Energy Production Idaho Power Energy Production4.5% 2% 2.5% 0.3%10.7%9.5%3.6%1.4%0.8%49% 9.3% 46.4%35% 7.5%17.5% HydroelectricWind Natural GasBiomassHydroelectricGeothermal* CoalCoalSolar* Natural GasWind*FIGURE 8. Avista Energy Production Mix (2017). Other PurchasesSmall Hydro*Source: Idaho Energy Landscape 2020Biomass* *Long term purchasesFIGURE 9. Idaho Power Energy Production Mix (2018). Source: Idaho Energy Landscape 2020Avista CorporationAvista is an investor-owned electric and natural gas utility headquartered in Spokane, Washington.Idaho Power CompanyAvista serves over 220,000 electric and natural gas customers in Idahos northern and central regions.Idaho Power Company was founded in 1916 and is It is the second largest electricity and natural gasthe largest electricity provider in the State. Based out provider in Idaho. Avista generates electricity byof Boise, it serves nearly 560,000 customers across a utilizing a mix of hydroelectric, natural gas, coal,24,000 square mile service territory in southern Idaho biomass, and wind generation (see Figure 8)and eastern Oregon. Electricity is supplied through delivered over 2,750 miles of electrical transmissionapproximately 5,000 miles of transmission line and lines, 19,000 miles of electrical distribution lines, andmore than 27,000 miles of distribution line. Idaho 7,800 miles of natural gas lines.4 Power is one of the nations few IOUs with a signicant hydroelectric generating base. It has 17 low-cost, Hydroelectric generation accounts for nearlyemission-free hydroelectric projects at the core of its half of Avistas electricity mix, which signicantlygeneration portfolio (see Figure 9), including a 1,167 improves energy prices for its customers. NaturalMW, three-dam complex in Hells Canyon.4gas generation comprises the second-largest source of generation. Avistas company-ownedIdaho Power also generates electricity via two and contract hydroelectric resources are locatednatural gas-red combustion turbine peaker in western Montana, eastern Washington, andplants and the natural gas-red combined cycle northern Idaho; its natural gas-red baseload andLangley Gulch Power Plant. Additionally, it has capacity resources are located in Idaho, Oregon,partial ownership in baseload coal facilities located and Washington. It also has an ownership share inin Wyoming, Oregon, and Nevadathe Bridger, the Colstrip coal-red power plant in Montana.4 Boardman and Valmy plants, respectively. In 62 I D A H O I N F R A S T R U C T U R E G U I D E B O O K'