Avista produces electricity using a number of different resources. In 2010, Avista generated or contracted to purchase for resale 5.91 million megawatt hours for our Northwest customers.
Our owned or contracted resources come primarily from four categories of fuel: biomass, coal, hydro, and natural gas.
Avista’s fuel mix is as follows:
Natural Gas – 35.66 percent
Hydro – 33.35 percent
Coal – 26.52 percent
Biomass – 2.49 percent
Waste – 1.43 percent
Nuclear* – 0.30 percent
Cogeneration – 0.12 percent
Petroleum – 0.08 percent
Landfill Gases* – 0.02 percent
Other – 0.02 percent
* Avista doesn’t own or operate landfill gas or nuclear generation facilities. We do however, purchase energy made within the Pacific Northwest, which includes some nuclear and waste generation.
In 2011, more than 70,000 mWh's, or about 1 percent, of Avista's resources came from wind and other renewables as a result of Buck-A-Block customer purchases.