Low Line Rapids
Hydro power plant in Twin Falls County, Idaho. 2.8 MW of nameplate capacity across 1 generator, operated by Lower Lowline LLC.
Also known as EIA plant 10808
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Key facts
- Capacity
- 2.8 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- August 1990First generator online
- Operator
- Lower Lowline LLCEIA operator ID 66275
- Grid
- IPCOBalancing authority IPCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Twin Falls County, ID42.4771, −114.3801
- EIA plant ID
- 10808EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Low Line Rapids produces
Free · EIA-923Net generation, 2025
8.32 GWh
8,318 MWh, final
Capacity factor, 2025
33.9%
2024: 35.3%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.1–10.2
GWh a year. Low 2020, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 8,576 | Not reported | 12 of 12 |
| 2002 | 8,999 | Not reported | 12 of 12 |
| 2003 | 9,933 | Not reported | 12 of 12 |
| 2004 | 9,412 | Not reported | 12 of 12 |
| 2005 | 8,349 | Not reported | 12 of 12 |
| 2006 | 9,026 | Not reported | 12 of 12 |
| 2007 | 9,245 | Not reported | 12 of 12 |
| 2008 | 9,796 | Not reported | 12 of 12 |
| 2009 | 9,621 | Not reported | 12 of 12 |
| 2010 | 10,218 | 41.7% | 12 of 12 |
| 2011 | 9,689 | 39.5% | 12 of 12 |
| 2012 | 8,576 | 34.9% | 12 of 12 |
| 2013 | 9,273 | 37.8% | 12 of 12 |
| 2014 | 7,654 | 31.2% | 12 of 12 |
| 2015 | 10,236 | 41.7% | 12 of 12 |
| 2016 | 8,238 | 33.5% | 12 of 12 |
| 2017 | 9,459 | 38.6% | 12 of 12 |
| 2018 | 9,765 | 39.8% | 12 of 12 |
| 2019 | 1,866 | 7.6% | 12 of 12 |
| 2020 | 94 | 0.4% | 12 of 12 |
| 2021 | 3,065 | 12.5% | 12 of 12 |
| 2022 | 7,851 | 32.0% | 12 of 12 |
| 2023 | 7,859 | 32.0% | 12 of 12 |
| 2024 | 8,677 | 35.3% | 12 of 12 |
| 2025 | 8,318 | 33.9% | 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. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 2.8 | August 1990 |
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 Lower Lowline LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Questions about Low Line Rapids
How much power does Low Line Rapids produce?
Low Line Rapids reported 8,318 MWh (8.32 GWh) of net generation in 2025, a 33.9% capacity factor on 2.8 MW of nameplate capacity.
Where is Low Line Rapids?
Low Line Rapids is in Twin Falls County, Idaho, at 42.4771, −114.3801. It is in the Idaho Power Company balancing area (IPCO).
Who operates Low Line Rapids?
EIA-860M for August 2026 lists Lower Lowline LLC as the operator (EIA operator ID 66275). The operator is not always the owner.
When did Low Line Rapids start operating?
Its first generator began operating in August 1990, 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