Hidden Hollow Energy
Landfill gas power plant in Ada County, Idaho. 3.2 MW of nameplate capacity across 2 generators, operated by Hidden Hollow Energy LLC.
Also known as EIA plant 57861
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 3.2 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 2007First generator online
- Operator
- Hidden Hollow Energy LLCEIA operator ID 57189
- Grid
- IPCOBalancing authority IPCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Ada County, ID43.6972, −116.2714
- EIA plant ID
- 57861EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Hidden Hollow Energy produces
Free · EIA-923Net generation, 2025
2.79 GWh
2,789 MWh, final
Capacity factor, 2025
9.9%
2024: 64.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
2.8–26.0
GWh a year. Low 2025, high 2020
| 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 | 23,697 | 90.2% | 12 of 12 |
| 2012 | 21,708 | 82.4% | 12 of 12 |
| 2013 | 20,274 | 77.1% | 12 of 12 |
| 2014 | 18,256 | 69.5% | 12 of 12 |
| 2015 | 21,181 | 80.6% | 12 of 12 |
| 2016 | 22,050 | Not reported | 12 of 12 |
| 2017 | 20,606 | 73.5% | 12 of 12 |
| 2018 | 5,767 | 20.6% | 12 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | 25,987 | 92.5% | 12 of 12 |
| 2021 | 25,314 | 90.3% | 12 of 12 |
| 2022 | 22,801 | 81.3% | 12 of 12 |
| 2023 | 23,956 | 85.5% | 12 of 12 |
| 2024 | 18,147 | 64.6% | 12 of 12 |
| 2025 | 2,789 | 9.9% | 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 |
|---|---|---|---|
| UNT1 | Landfill Gas | 1.6 | January 2007 |
| UNT2 | Landfill Gas | 1.6 | January 2007 |
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 Hidden Hollow Energy 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 Hidden Hollow Energy
How much power does Hidden Hollow Energy produce?
Hidden Hollow Energy reported 2,789 MWh (2.79 GWh) of net generation in 2025, a 9.9% capacity factor on 3.2 MW of nameplate capacity.
Where is Hidden Hollow Energy?
Hidden Hollow Energy is in Ada County, Idaho, at 43.6972, −116.2714. It is in the Idaho Power Company balancing area (IPCO).
Who operates Hidden Hollow Energy?
EIA-860M for August 2026 lists Hidden Hollow Energy LLC as the operator (EIA operator ID 57189). The operator is not always the owner.
When did Hidden Hollow Energy start operating?
Its first generator began operating in January 2007, 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