Tiber Dam Hydroelectric Plant
Hydro power plant in Liberty County, Montana. 7.5 MW of nameplate capacity across 1 generator, operated by Tiber Montana LLC.
Also known as EIA plant 56499
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- June 2004First generator online
- Operator
- Tiber Montana LLCEIA operator ID 55704
- Grid
- WAUWBalancing authority WAUW
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Liberty County, MT48.3180, −111.1018
- EIA plant ID
- 56499EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Tiber Dam Hydroelectric Plant produces
Free · EIA-923Net generation, 2025
31.2 GWh
31,153 MWh, final
Capacity factor, 2025
47.4%
2024: 54.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
31.2–55.8
GWh a year. Low 2025, high 2019
| 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 | 42,986 | Not reported | 12 of 12 |
| 2007 | 38,901 | Not reported | 12 of 12 |
| 2008 | 43,402 | Not reported | 12 of 12 |
| 2009 | 50,830 | Not reported | 12 of 12 |
| 2010 | 41,868 | 63.7% | 12 of 12 |
| 2011 | 58,260 | 88.7% | 12 of 12 |
| 2012 | 52,467 | 79.6% | 12 of 12 |
| 2013 | 51,995 | 79.1% | 12 of 12 |
| 2014 | 55,631 | 84.7% | 12 of 12 |
| 2015 | 54,847 | 83.5% | 12 of 12 |
| 2016 | 52,297 | 79.4% | 12 of 12 |
| 2017 | 51,090 | 77.8% | 12 of 12 |
| 2018 | 53,530 | 81.5% | 12 of 12 |
| 2019 | 55,765 | 84.9% | 12 of 12 |
| 2020 | 54,546 | 82.8% | 12 of 12 |
| 2021 | 50,327 | 76.6% | 12 of 12 |
| 2022 | 45,691 | 69.5% | 12 of 12 |
| 2023 | 44,009 | 67.0% | 12 of 12 |
| 2024 | 36,106 | 54.8% | 12 of 12 |
| 2025 | 31,153 | 47.4% | 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 account · SPPEmissions
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 |
|---|---|---|---|
| HY1 | Conventional Hydroelectric | 7.5 | June 2004 |
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 Tiber Montana 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 Tiber Dam Hydroelectric Plant
How much power does Tiber Dam Hydroelectric Plant produce?
Tiber Dam Hydroelectric Plant reported 31,153 MWh (31.2 GWh) of net generation in 2025, a 47.4% capacity factor on 7.5 MW of nameplate capacity.
Where is Tiber Dam Hydroelectric Plant?
Tiber Dam Hydroelectric Plant is in Liberty County, Montana, at 48.3180, −111.1018. It is in the Western Area Power Administration UGP West balancing area (WAUW).
Who operates Tiber Dam Hydroelectric Plant?
EIA-860M for August 2026 lists Tiber Montana LLC as the operator (EIA operator ID 55704). The operator is not always the owner.
When did Tiber Dam Hydroelectric Plant start operating?
Its first generator began operating in June 2004, according to EIA-860M.
Does InfraMap have power prices for Tiber Dam Hydroelectric Plant?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Tiber Dam Hydroelectric Plant, 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)
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page