Sierra Pacific Power Co
Investor Owned electric utility · Nevada · #105 of 3,199 U.S. utilities by customers · EIA utility #17166
Sierra Pacific Power Co is a investor owned electric utility serving 386,254 customers in Nevada. In 2025 it sold 8,757 gigawatt-hours of electricity for $926.63M in revenue, an average realized rate of 10.58¢ per kWh across all customer classes and 13.65¢ per kWh for residential customers. Its reported service territory covers 14 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, wholesale marketing, bundled.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 334,961 | 2,666 | $363.98M | 13.65¢ | |
| Commercial | 49,769 | 3,763 | $371.71M | 9.88¢ | |
| Industrial | 1,524 | 2,328 | $190.95M | 8.20¢ | |
| Total | 386,254 | 8,757 | $926.63M | 10.58¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (663 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 365,420 | 9,557 | $767.08M | 10.93¢ |
| 2022 | 370,929 | 8,751 | $934.52M | 13.30¢ |
| 2023 | 375,755 | 8,348 | $1.13B | 16.10¢ |
| 2024 | 381,848 | 8,654 | $1.03B | 14.52¢ |
| 2025 | 386,254 | 8,757 | $926.63M | 13.65¢ |
Reliability (2025)
Average outage time (SAIDI): 288 minutes per customer per year
Average outages (SAIFI): 2.51 per customer
Average restoration time (CAIDI): 115 minutes
As reported for Nevada under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 5,333 GWh
Wholesale power purchased: 4,363 GWh
Winter peak demand: 1,319 MW
Energy losses: 3.3% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.7% of 417,999 meters
Customer-sited generation (net metering): 15,769 installations, 145.0 MW of capacity
This utility also reported 24 delivery-only customers (2,882 GWh delivered) in 2025. Delivery figures are excluded from the totals above because the same electricity is also reported by the energy supplier - see Methodology.
Counties served
Carson City, NVChurchill, NVDouglas, NVElko, NVEsmeralda, NVEureka, NVHumboldt, NVLander, NVLyon, NVMineral, NVNye, NVPershing, NVStorey, NVWashoe, NV
Other large utilities in Nevada
- Nevada Power Co - 1,052,455 customers, residential 13.08¢
- Valley Electric Assn, Inc - 25,460 customers, residential 15.33¢
- Overton Power District No 5 - 18,965 customers, residential 12.46¢
- City of Boulder City - (NV) - 8,224 customers, residential 10.67¢
- Mt Wheeler Power, Inc - 7,762 customers, residential 9.45¢
- Wells Rural Electric Co - 6,513 customers, residential 10.27¢
- City of Fallon - (NV) - 5,012 customers, residential —
- Lincoln County Power Dist No 1 - 2,148 customers, residential —
All Nevada utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17166 in the EIA frame.