City of Sumas - (WA)
Municipal electric utility · Washington · #2,464 of 3,199 U.S. utilities by customers · EIA utility #18282
City of Sumas - (WA) is a municipal electric utility serving 1,039 customers in Washington. In 2025 it sold 33.3 gigawatt-hours of electricity for $2.77M in revenue, an average realized rate of 8.34¢ per kWh across all customer classes and — per kWh for residential customers. Its reported service territory covers 1 counties.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Total | 1,039 | 33.3 | $2.77M | 8.34¢ |
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 (— kWh/month).
This utility files the EIA-861S short form, which reports totals only - no breakdown by customer class is published for it.
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 1,050 | 30.4 | $2.30M | — |
| 2022 | 1,068 | 21.4 | $2.42M | — |
| 2023 | 1,028 | 31.3 | $2.58M | — |
| 2024 | 992 | 33.2 | $2.65M | — |
| 2025 | 1,039 | 33.3 | $2.77M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 865 meters
Counties served
Whatcom, WA
Other large utilities in Washington
- Puget Sound Energy Inc - 1,251,330 customers, residential 17.01¢
- City of Seattle - (WA) - 525,040 customers, residential 14.74¢
- 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¢
All Washington utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #18282 in the EIA frame.