State
Delaware
Who serves its customers, 2025
| Kind of utility | Customers | Share of customers |
|---|---|---|
| Investor owned | 305,344 | 56.1% |
| Cooperative | 122,301 | 22.5% |
| Public (municipal, state, federal, and districts) | 58,261 | 10.7% |
| Retail power marketer | 36,773 | 6.8% |
| Other | 21,156 | 3.9% |
Customers of full-service and energy-only providers, as EIA counts them; delivery-only customers are the same people, so they are not counted twice.
U.S. Energy Information Administration · Annual Electric Power Industry Report (Form EIA-861) · data for 2025 · as of Oct 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Oct 7, 2027. Last checked for an update: Oct 31, 2026.
Average price by sector, 2025
| Sector | Average price (cents per kWh) |
|---|---|
| Residential | 17.15 |
| Commercial | 12.68 |
| Industrial | 9.62 |
Revenue from every kind of service over sales counted once, as EIA computes its state averages.
Capacity and generation by fuel
| Fuel | Capacity | Net generation in 2025 |
|---|---|---|
| Natural gas | 2,628.9 MW | 4,699,834 MWh |
| OG | 140 MW | 206,831 MWh |
| Distillate fuel oil | 120.8 MW | 63,871 MWh |
| Solar | 114.6 MW | 168,559 MWh |
| Landfill gas | 14.2 MW | 57,299 MWh |
| Wind | 2 MW | 4,952 MWh |
| Residual fuel oil | 7,571 MWh | |
| Bituminous coal | 252,716 MWh | |
| Subbituminous coal | 0 MWh | |
| KER | 0 MWh | |
| Petroleum coke | 0 MWh |
Balancing authorities serving it: PJM.
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Oct 31, 2026.
Interconnection queue, as of the end of 2025
| Type | Active capacity (MW) | Projects |
|---|---|---|
| Solar | 145 | 5 |
| Storage | 350 | 2 |
| Other | 10 | 1 |
Requests still active in an interconnection queue at the end of 2025. Most never get built. Credit: Lawrence Berkeley National Laboratory and GridTracker.
Lawrence Berkeley National Laboratory and GridTracker · Queued Up: Interconnection Queue Data File (Lawrence Berkeley National Laboratory) · data for 2025 · as of May 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by May 7, 2027. Last checked for an update: Oct 31, 2026.
Utilities
| Utility | Ownership, as EIA reports it | Customers | Sales (MWh) |
|---|---|---|---|
| Delmarva Power | Investor Owned | 343,380 | 7,782,150 |
| Delaware Electric Cooperative | Cooperative | 122,301 | 1,686,843 |
| City of Dover - (DE) | Municipal | 25,346 | 704,817 |
| Adjustment 2025 | 17,464 | 449,939 | |
| City of Newark - (DE) | Municipal | 13,486 | 421,984 |
| Town of Middletown - (DE) | Municipal | 10,333 | 280,171 |
| City of Milford - (DE) | Municipal | 9,096 | 245,663 |
| WGL Energy Services, Inc. | Retail Power Marketer | 5,360 | 616,570 |
| Constellation NewEnergy, Inc | Retail Power Marketer | 5,011 | 1,075,324 |
| Reliant Energy Northeast LLC | Retail Power Marketer | 4,207 | 47,508 |
| Tesla Inc. | Behind the Meter | 3,297 | 27,258 |
| Direct Energy Services | Retail Power Marketer | 2,921 | 34,043 |
| CleanChoice Energy, Inc. | Retail Power Marketer | 2,613 | 23,107 |
| SmartEnergy Holdings, LLC | Retail Power Marketer | 2,557 | 21,402 |
| Residents Energy, LLC | Retail Power Marketer | 2,507 | 21,299 |
| Inspire Energy Holdings, LLC | Retail Power Marketer | 2,388 | 23,807 |
| Palmco Power DE, LLC | Retail Power Marketer | 1,396 | 10,818 |
| Rushmore Energy, LLC | Retail Power Marketer | 1,246 | 9,843 |
| Just Energy Solutions Inc. | Retail Power Marketer | 1,237 | 13,496 |
| Spark Energy, LP | Retail Power Marketer | 692 | 7,471 |
| XOOM Energy Delaware, LLC | Retail Power Marketer | 494 | 5,135 |
| Nordic Energy Services, LLC | Retail Power Marketer | 487 | 2,895 |
| Think Energy, LLC | Retail Power Marketer | 476 | 5,391 |
| Clearview Electric Inc. | Retail Power Marketer | 437 | 3,670 |
| Sunrun Inc. | Behind the Meter | 392 | 2,453 |
| NextEra Energy Services, LLC | Retail Power Marketer | 343 | 229,488 |
| Freepoint Energy Solutions LLC | Retail Power Marketer | 296 | 114,016 |
| Direct Energy Business | Retail Power Marketer | 263 | 370,384 |
| Ambit Energy Holdings, LLC | Retail Power Marketer | 252 | 2,990 |
| Discount Power Inc - (CT) | Retail Power Marketer | 241 | 2,283 |
| AEP Energy | Retail Power Marketer | 224 | 37,521 |
| RPA Energy, Inc. | Retail Power Marketer | 184 | 1,320 |
| Park Power LLC | Retail Power Marketer | 167 | 1,335 |
| Stream Energy Delaware, LLC | Retail Power Marketer | 151 | 1,539 |
| Titan Gas LLC | Retail Power Marketer | 148 | 1,298 |
| ENGIE Resources LLC | Retail Power Marketer | 83 | 204,484 |
| Atlantic Energy LLC | Retail Power Marketer | 82 | 638 |
| ResCom Energy, LLC | Retail Power Marketer | 64 | 650 |
| SmartestEnergy US LLC | Retail Power Marketer | 61 | 52,181 |
| CPV Retail Energy LP | Retail Power Marketer | 33 | 21,403 |
| Greenlight Energy Inc. | Retail Power Marketer | 27 | 203 |
| MidAmerican Energy Services, LLC | Retail Power Marketer | 27 | 1,098 |
| MP2 Energy LLC | Retail Power Marketer | 26 | 69,031 |
| UGI Energy Services, LLC | Retail Power Marketer | 23 | 4,621 |
| First Point Power, LLC | Retail Power Marketer | 16 | 117 |
| Champion Energy Services | Retail Power Marketer | 13 | 9,908 |
| Calpine Energy Solutions, LLC | Retail Power Marketer | 11 | 161,150 |
| BP Energy Retail LLC | Retail Power Marketer | 7 | 68,965 |
| Constellation Solar Holding, LLC | Behind the Meter | 2 | 2,057 |
| Messer Energy Services, Inc. | Retail Power Marketer | 1 | 172,774 |
| PBF Power Marketing | Retail Power Marketer | 1 | 459,798 |
| Scale Sustainable I, LLC | Behind the Meter | 1 | 31 |
| Sunnova | Behind the Meter | 0 | 0 |
A utility with too few reported figures for its own page is listed here with what it reported.
Power plants (53)
| Plant | County | Nameplate capacity | Operator |
|---|---|---|---|
| Hay Road | New Castle | 1,098.2 MW | Calpine Mid-Atlantic Generation LLC |
| Edge Moor | New Castle | 710.3 MW | Calpine Mid-Atlantic Generation LLC |
| Garrison Energy Center LLC | Kent | 361 MW | Garrison Energy Center LLC |
| Delaware City Plant | New Castle | 324 MW | Delaware City Refining Company LLC |
| Energy Center Dover | Kent | 118 MW | Cartier Energy, LLC |
| Warren F Sam Beasley Generation Station | Kent | 96 MW | Delaware Municipal Electric Corp |
| Christiana | New Castle | 55 MW | Calpine Mid-Atlantic Generation LLC |
| ENGIE Solidago Solar Project - Hybrid | New Castle | 50 MW | ENGIE Solidago Solar LLC |
| Van Sant Station | Kent | 45.1 MW | NAES Corporation - (DE) |
| Red Lion Energy Center | New Castle | 24.9 MW | Diamond State Generation Partners, LLC |
| Indian River Generating Station | Sussex | 18.6 MW | Indian River Operations Inc |
| Delaware City 10 | New Castle | 18.5 MW | Calpine Mid-Atlantic Generation LLC |
| West Station (DE) | New Castle | 16.2 MW | Calpine Mid-Atlantic Generation LLC |
| Milford Solar Farm | Kent | 11.8 MW | Milford Solar LLC |
| Dover Sun Park | Kent | 10 MW | White Oak Solar Energy LLC |
| Ameresco Delaware Central | Kent | 5 MW | AMERESCO Delaware Central |
| Ameresco Delaware South | Sussex | 5 MW | AMERESCO Delaware South |
| Heimlich Solar | Sussex | 4.5 MW | Heimlich Solar Partners LLC |
| Croda Atlas Point CHP | New Castle | 4.2 MW | Croda Inc. |
| Bruce A Henry Solar Farm | Sussex | 4 MW | Delaware Electric Cooperative |
| DE-ECA CS Hartly | Kent | 4 MW | Hartly Community Energy Initiative LLC |
| KE73 CSG | Kent | 4 MW | Nautilus Solar Solutions |
| Sussex CSG 2 LLC | Sussex | 3.3 MW | Dimension Energy LLC |
| AstraZeneca Newark Solar | New Castle | 3.2 MW | AstraZeneca Pharmaceuticals |
| Chaberton Solar Blackburn | Kent | 3 MW | Pivot Energy |
| DE-ECA CS Seaford | Sussex | 3 MW | Glenville Hollow Community Energy Initiative LLC |
| DEC Phase II at Georgetown | Sussex | 3 MW | Luminace Solar MC, LLC |
| Brookside Newark | New Castle | 2.6 MW | Diamond State Generation Partners, LLC |
| University of Delaware Wind Turbine | Sussex | 2 MW | First State Marine Wind |
| South Campus Solar | New Castle | 1.8 MW | JPMorgan Chase Bank |
| Blue Hen Solar | Kent | 1.5 MW | Madison Energy Holdings LLC |
| WHA Southbridge Solar Park CSG | New Castle | 1.4 MW | Ecogy Delaware II LLC. |
| AGT001 Centerville Fuel Cell | New Castle | 1.3 MW | 2016 ESA Project Company, LLC |
| Perdue Bridgeville Photovoltaic | Sussex | 1.3 MW | Terraform Arcadia |
| DD Hay Road Solar 23 LLC | New Castle | 1.2 MW | Laurel Capital Partners |
| DG AMP Solar Smyrna | Kent | 1.2 MW | DG AMP Solar, LLC |
| Kent County Wastewater Treatment Solar | Kent | 1.2 MW | Kent County Levy Court Dept of Pub Work |
| Onyx - Allen Harim | Sussex | 1.2 MW | Onyx Asset Services Group |
| CE DE - Harbeson | Sussex | 0 MW | Standard Solar |
| Cedar Creek Solar | New Castle | 0 MW | FPS Cedar Creek Solar LLC |
| Chaberton Solar Biggins Creek LLC | Sussex | 0 MW | Dimension Energy LLC |
| Chaberton Solar Blue Hen LLC | Sussex | 0 MW | Dimension Energy LLC |
| Chaberton Solar Crestone | Kent | 0 MW | Pivot Energy |
| DE-ECA CS East Evens | Kent | 0 MW | E Evens Community Energy Initiative LLC |
| DEL022-30423B Thorogoods Rd, LLC | Sussex | 0 MW | Pivot Energy |
| Delaware Ave Solar | Kent | 0 MW | Delaware Ave Solar, LLC |
| Grears Corner Solar | New Castle | 0 MW | Grears Corner Solar, LLC |
| Maryland Line Road Solar | New Castle | 0 MW | Maryland Line Road Solar, LLC |
| NL DE Taylor CSG | Sussex | 0 MW | Standard Solar |
| Raceway Solar | Kent | 0 MW | Freepoint Commodities LLC |
| Rifle Range Road Solar | Sussex | 0 MW | Rifle Range Road Solar, LLC |
| Sunrise Magnolia DE | Kent | 0 MW | Standard Solar |
| Sunrise Solar Lincoln DE (CSG) | Sussex | 0 MW | Standard Solar |