Delaware City 10
New Castle County, Delaware · EIA plant ID 592 · Operator: Calpine Mid-Atlantic Generation LLC
Nameplate19MWSummer 18 MW
Generators1in service
Net generation-1GWh12 mo to Dec 2025
Capacity factor-0%!gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1968Runs as rarely runs
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1.2 | — | — |
| 2002 | 2.1 | — | — |
| 2003 | 0.3 | 0.2% | 21,844 |
| 2004 | 0.6 | 0.4% | 16,230 |
| 2005 | 0.3 | 0.2% | 23,181 |
| 2006 | 0.5 | 0.4% | 17,545 |
| 2007 | 0.2 | 0.2% | 20,489 |
| 2008 | 0.2 | 0.1% | 22,929 |
| 2009 | 0.1 | 0.1% | 22,892 |
| 2010 | -0.1 | -0.1% | — |
| 2011 | -0 | 0.0% | — |
| 2012 | 0 | 0.0% | — |
| 2013 | 0.1 | 0.1% | 28,427 |
| 2014 | 1 | 0.6% | 13,543 |
| 2015 | 0.1 | 0.1% | 24,225 |
| 2016 | 0.1 | 0.0% | 20,807 |
| 2017 | 0.1 | 0.1% | — |
| 2018 | 0 | 0.0% | — |
| 2019 | 0.2 | 0.1% | 20,924 |
| 2020 | 0 | 0.0% | — |
| 2021 | 0.1 | 0.0% | 22,814 |
| 2022 | 0 | 0.0% | — |
| 2023 | -0.6 | -0.4% | — |
| 2024 | -1.2 | -0.8% | — |
| 2025 | -0.7 | -0.4% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| DC10 | Petroleum Liquids | GT | 18.5 | 18 | Apr 1968 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: Calpine Mid-Atlantic Generation LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Calpine Mid-Atlantic Generation LLC | 100.0% | 19 MW |
Nearby plants
Within 80 km.
| Red Lion Energy Center | 25 MW | 1.1 km |
| Delaware City Plant | 324 MW | 1.6 km |
| Pennsville Landfill (CSG) | 4 MW | 8.2 km |
| AstraZeneca Newark Solar | 3 MW | 8.6 km |
| Brookside Newark | 3 MW | 10.8 km |
| Croda Atlas Point CHP | 4 MW | 12.6 km |