City of Seattle - (WA)
Municipal electric utility · Washington · #75 of 3,199 U.S. utilities by customers · EIA utility #16868
City of Seattle - (WA) is a municipal electric utility serving 525,040 customers in Washington. In 2025 it sold 9,100 gigawatt-hours of electricity for $1.20B in revenue, an average realized rate of 13.17¢ per kWh across all customer classes and 14.74¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, buying distribution, wholesale marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 472,309 | 3,364 | $495.81M | 14.74¢ | |
| Commercial | 52,680 | 4,978 | $621.26M | 12.48¢ | |
| Industrial | 48 | 674 | $71.43M | 10.59¢ | |
| Transportation | 3 | 82.9 | $9.68M | 11.68¢ | |
| Total | 525,040 | 9,100 | $1.20B | 13.17¢ |
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 (594 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 485,155 | 8,922 | $952.66M | 11.85¢ |
| 2022 | 493,662 | 9,329 | $1.01B | 12.12¢ |
| 2023 | 503,221 | 9,228 | $1.05B | 12.78¢ |
| 2024 | 512,498 | 9,042 | $1.13B | 14.09¢ |
| 2025 | 525,040 | 9,100 | $1.20B | 14.74¢ |
Reliability (2025)
Average outage time (SAIDI): 158 minutes per customer per year
Average outages (SAIFI): 1.04 per customer
Average restoration time (CAIDI): 152 minutes
As reported for Washington 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: 5,020 GWh
Wholesale power purchased: 6,510 GWh
Winter peak demand: 1,816 MW
Energy losses: 3.7% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 98.2% of 540,809 meters
Customer-sited generation (net metering): 9,187 installations, 74.7 MW of capacity
Counties served
King, WA
Other large utilities in Washington
- Puget Sound Energy Inc - 1,251,330 customers, residential 17.01¢
- Avista Corp - 424,411 customers, residential 13.37¢
- PUD No 1 of Snohomish County - (WA) - 385,159 customers, residential 12.08¢
- PUD No 1 of Clark County - (WA) - 243,809 customers, residential 10.63¢
- City of Tacoma - (WA) - 200,438 customers, residential 11.45¢
- PUD No 1 of Benton County - 58,679 customers, residential 9.13¢
- PUD No 2 of Grant County - (WA) - 56,753 customers, residential 6.17¢
- PUD No 1 of Cowlitz County - 54,269 customers, residential 9.23¢
All Washington utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #16868 in the EIA frame.