Black Diamond Power Co
Investor Owned electric utility · West Virginia · #1,754 of 3,199 U.S. utilities by customers · EIA utility #1764
Black Diamond Power Co is a investor owned electric utility serving 3,693 customers in West Virginia. In 2025 it sold 47.8 gigawatt-hours of electricity for $9.44M in revenue, an average realized rate of 19.77¢ per kWh across all customer classes and 20.10¢ per kWh for residential customers. Its reported service territory covers 4 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 3,243 | 33.3 | $6.69M | 20.10¢ | |
| Commercial | 450 | 14.5 | $2.76M | 19.03¢ | |
| Total | 3,693 | 47.8 | $9.44M | 19.77¢ |
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 (855 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 3,962 | 49.5 | $6.66M | 13.68¢ |
| 2022 | 3,928 | 48.9 | $6.41M | 13.20¢ |
| 2023 | 3,933 | 46.3 | $6.92M | 15.35¢ |
| 2024 | 3,933 | 46.3 | $6.92M | 15.35¢ |
| 2025 | 3,693 | 47.8 | $9.44M | 20.10¢ |
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 47.8 GWh
Winter peak demand: — MW
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 3,693 meters
Counties served
Clay, WVKanawha, WVRaleigh, WVWyoming, WV
Other large utilities in West Virginia
- Monongahela Power Co - 397,362 customers, residential 14.31¢
- Wheeling Power Co - 41,072 customers, residential 17.61¢
- Harrison Rural Elec Assn, Inc - 7,144 customers, residential —
- City of New Martinsville - (WV) - 1,740 customers, residential —
- Philippi Municipal Electric - 1,703 customers, residential —
All West Virginia utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #1764 in the EIA frame.