Ameresco Delaware South
Landfill gas power plant in Sussex County, Delaware. 5 MW of nameplate capacity across 5 generators, operated by AMERESCO Delaware South.
Also known as EIA plant 56429
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 5 MWNameplate
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- December 2006First generator online
- Operator
- AMERESCO Delaware SouthEIA operator ID 54815
- Grid
- PJMBalancing authority PJM
- Price nodes
- None linkedNo verified ISO node
- Location
- Sussex County, DE38.5992, −75.4342
- EIA plant ID
- 56429EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ameresco Delaware South produces
Free · EIA-923Net generation, 2025
22.6 GWh
22,631 MWh, final
Capacity factor, 2025
51.7%
2024: 7.7%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
3.4–32.2
GWh a year. Low 2024, high 2021
| 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 | 417 | Not reported | 12 of 12 |
| 2007 | 30,839 | Not reported | 12 of 12 |
| 2008 | 32,517 | Not reported | 12 of 12 |
| 2009 | 23,200 | Not reported | 12 of 12 |
| 2010 | 32,329 | Not reported | 12 of 12 |
| 2011 | 38,247 | 87.3% | 12 of 12 |
| 2012 | 38,063 | 86.7% | 12 of 12 |
| 2013 | 34,945 | 79.8% | 12 of 12 |
| 2014 | 30,975 | 70.7% | 12 of 12 |
| 2015 | 29,650 | 67.7% | 12 of 12 |
| 2016 | 22,985 | 52.3% | 12 of 12 |
| 2017 | 26,076 | 59.5% | 12 of 12 |
| 2018 | 22,616 | 51.6% | 12 of 12 |
| 2019 | 28,856 | 65.9% | 12 of 12 |
| 2020 | 30,078 | 68.5% | 12 of 12 |
| 2021 | 32,160 | 73.4% | 12 of 12 |
| 2022 | 27,898 | 63.7% | 12 of 12 |
| 2023 | 29,627 | 67.6% | 12 of 12 |
| 2024 | 3,380 | 7.7% | 12 of 12 |
| 2025 | 22,631 | 51.7% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Landfill Gas | 1.0 | December 2006 |
| 2 | Landfill Gas | 1.0 | December 2006 |
| 3 | Landfill Gas | 1.0 | December 2006 |
| 4 | Landfill Gas | 1.0 | December 2006 |
| 5 | Landfill Gas | 1.0 | May 2010 |
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 AMERESCO Delaware South 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 Ameresco Delaware South
How much power does Ameresco Delaware South produce?
Ameresco Delaware South reported 22,631 MWh (22.6 GWh) of net generation in 2025, a 51.7% capacity factor on 5 MW of nameplate capacity.
Where is Ameresco Delaware South?
Ameresco Delaware South is in Sussex County, Delaware, at 38.5992, −75.4342. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Ameresco Delaware South?
EIA-860M for August 2026 lists AMERESCO Delaware South as the operator (EIA operator ID 54815). The operator is not always the owner.
When did Ameresco Delaware South start operating?
Its first generator began operating in December 2006, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page