Garrison Energy Center LLC
Natural gas power plant in Kent County, Delaware. 361 MW of nameplate capacity across 2 generators, operated by Garrison Energy Center LLC.
Also known as Garrison Energy Center · EIA plant 57349
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Key facts
- Capacity
- 361 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 2015First generator online
- Operator
- Garrison Energy Center LLCEIA operator ID 56691
- Grid
- PJMBalancing authority PJM
- Price nodes
- 1 PJM nodeResource nodes with prices
- Location
- Kent County, DE39.1872, −75.4994
- EIA plant ID
- 57349EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Garrison Energy Center produces
Free · EIA-923Net generation, 2025
855 GWh
855,452 MWh, final
Capacity factor, 2025
27.1%
2024: 25.1%
January to July 2026
524 GWh
Provisional
Range, 2016 to 2025
0.8–1.8
TWh a year. Low 2024, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 93,188 | 17.6% | 2 of 12 |
| 2016 | 1,565,124 | 49.4% | 12 of 12 |
| 2017 | 1,769,193 | 55.9% | 12 of 12 |
| 2018 | 1,335,402 | 42.2% | 12 of 12 |
| 2019 | 1,723,655 | 54.5% | 12 of 12 |
| 2020 | 1,579,697 | 49.8% | 12 of 12 |
| 2021 | 1,103,550 | 34.9% | 12 of 12 |
| 2022 | 1,257,346 | 39.8% | 12 of 12 |
| 2023 | 816,555 | 25.8% | 12 of 12 |
| 2024 | 794,620 | 25.1% | 12 of 12 |
| 2025 | 855,452 | 27.1% | 12 of 12 |
| 2026 (provisional, partial year) | 523,717 | 28.5% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
373,668
US short tons. 2024: 343,855
SO₂, 2025
2
US short tons
NOx, 2025
35
US short tons
CO₂ per MWh, calculated
0.44 t
About 874 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (1), matched to EIA plant 57349 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
151
million gallons
Consumption, 2024
151
million gallons
Source
Dover, DE Municipal Water
Ground, Fresh. Hybrid induced-draft tower
Watershed stress
Very low/none · 0.161
USGS SUI, HUC12 Little River-Frontal Delaware Bay
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 235.0 | June 2015 |
| STG2 | Natural Gas Fired Combined Cycle | 126.0 | June 2015 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Garrison Energy Center LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Garrison Energy Center
How much power does Garrison Energy Center LLC produce?
Garrison Energy Center LLC reported 855,452 MWh (855 GWh) of net generation in 2025, a 27.1% capacity factor on 361 MW of nameplate capacity. From January to July 2026 it reported 524 GWh, which is provisional.
Where is Garrison Energy Center LLC?
Garrison Energy Center LLC is in Kent County, Delaware, at 39.1872, −75.4994. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Garrison Energy Center LLC?
EIA-860M for August 2026 lists Garrison Energy Center LLC as the operator (EIA operator ID 56691). The operator is not always the owner.
When did Garrison Energy Center LLC start operating?
Its first generator began operating in June 2015, according to EIA-860M.
Does InfraMap have power prices for Garrison Energy Center LLC?
Yes. InfraMap has PJM day-ahead and real-time prices at 1 price node linked to Garrison Energy Center LLC, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page