Delaware Electric Cooperative
Cooperative electric utility · Delaware · #200 of 3,199 U.S. utilities by customers · EIA utility #5070
Delaware Electric Cooperative is a cooperative electric utility serving 122,301 customers in Delaware. In 2025 it sold 1,687 gigawatt-hours of electricity for $233.88M in revenue, an average realized rate of 13.86¢ per kWh across all customer classes and 13.89¢ per kWh for residential customers. Its reported service territory covers 2 counties. EIA records its activities as: generation, distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 108,801 | 1,376 | $191.10M | 13.89¢ | |
| Commercial | 13,167 | 307 | $42.09M | 13.70¢ | |
| Industrial | 333 | 3.4 | $681.00K | 20.27¢ | |
| Total | 122,301 | 1,687 | $233.88M | 13.86¢ |
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 (1,054 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 109,330 | 1,550 | $177.09M | 11.52¢ |
| 2022 | 113,057 | 1,573 | $202.41M | 12.96¢ |
| 2023 | 116,535 | 1,530 | $227.31M | 14.96¢ |
| 2024 | 118,644 | 1,607 | $227.57M | 14.22¢ |
| 2025 | 122,301 | 1,687 | $233.88M | 13.89¢ |
Reliability (2025)
Average outage time (SAIDI): 111 minutes per customer per year
Average outages (SAIFI): 1.48 per customer
Average restoration time (CAIDI): 75 minutes
As reported for Delaware 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: 21.8 GWh
Wholesale power purchased: 1,756 GWh
Winter peak demand: 463 MW
Energy losses: 5.0% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 122,786 meters
Customer-sited generation (net metering): 3,488 installations, 42.2 MW of capacity
Counties served
Kent, DESussex, DE
Other large utilities in Delaware
- Delmarva Power - 505,595 customers, residential 19.69¢
- City of Dover - (DE) - 25,346 customers, residential 16.16¢
- City of Newark - (DE) - 13,486 customers, residential 19.75¢
- Town of Middletown - (DE) - 10,333 customers, residential 16.64¢
- City of Milford - (DE) - 9,096 customers, residential 15.86¢
- Town of Smyrna - (DE) - 6,546 customers, residential —
- City of Seaford- (DE) - 4,474 customers, residential —
- City of Lewes - (DE) - 4,087 customers, residential —
All Delaware utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #5070 in the EIA frame.