| http://www.w3.org/ns/prov#value | - ts, employee workforce factors, unseasonable weather, drought, wildfire and other natural phenomena, explosions, fires, accidents, mechanical breakdowns that may occur while operating and maintaining an electric and natural gas system, their ability to purchase sufficient fuel, natural gas and power to meet their power demands and natural gas demands for Sierra Pacific Power Company d/b/a NV Energ
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