Hydro III
Cache County, Utah · EIA plant ID 3675 · Operator: City of Logan - (UT)
Nameplate1MWSummer 1 MW
Generators2in service
Net generation-42GWh12 mo to Dec 2025
Capacity factor-343%!hydro units, summer MW
Heat rate—thermal plants only
First online1925
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2002 | 2.4 | 19.8% | — |
| 2003 | 3.7 | 30.6% | — |
| 2004 | 4.2 | 33.9% | — |
| 2005 | 6 | 48.7% | — |
| 2006 | 6.4 | 52.2% | — |
| 2007 | 4.4 | 35.8% | — |
| 2008 | 4.4 | 33.6% | — |
| 2009 | 5.4 | 40.9% | — |
| 2010 | 4.5 | 34.2% | — |
| 2011 | 6.6 | 50.0% | — |
| 2012 | 4.6 | 34.8% | — |
| 2013 | 2.7 | 22.1% | — |
| 2014 | 4.7 | 38.6% | — |
| 2015 | 5 | 40.8% | — |
| 2016 | 5.1 | 41.5% | — |
| 2017 | 6 | 49.3% | — |
| 2018 | 3.4 | 27.8% | — |
| 2019 | 3.7 | 29.9% | — |
| 2020 | 0.3 | 2.4% | — |
| 2021 | -0.1 | -0.5% | — |
| 2022 | -0.1 | -0.7% | — |
| 2023 | -0.1 | -0.6% | — |
| 2024 | -0.1 | -0.6% | — |
| 2025 | -42 | -342.6% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| HY1 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Dec 1925 | Operating | — | coming soon |
| HY2 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Dec 1925 | Operating | — | coming soon |
| 1 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Jan 1923 | Retired Jan 1970 | — | coming soon |
| HY3 | Conventional Hydroelectric | HY | 0.1 | 0.1 | Jan 1992 | Retired Jan 2013 | — | coming soon |
| IC1 | Petroleum Liquids | IC | 0.6 | 0.6 | Dec 1927 | Retired Dec 2002 | — | coming soon |
Owner / operator
Operator: City of Logan - (UT). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Logan - (UT) | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Hydro II | 7 MW | 3.1 km |
| Central Energy Plant USU | 5 MW | 5.5 km |
| Logan City | 16 MW | 8.4 km |
| Logan City 2 | 10 MW | 10.8 km |
| Cutler Hydro | 30 MW | 27.2 km |
| Brigham City Gas | — | 34.1 km |