Annex Creek
Juneau County, Alaska · EIA plant ID 62 · Operator: Alaska Electric Light&Power Co
Nameplate4MWSummer 4 MW
Generators2in service
Net generation10GWh12 mo to Dec 2025
Capacity factor33%hydro units, summer MW
Heat rate—thermal plants only
First online1915
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) |
|---|---|---|---|
| 2001 | 21.7 | 68.8% | — |
| 2002 | 28.9 | 91.6% | — |
| 2003 | 24.1 | 76.5% | — |
| 2004 | 22.9 | 72.5% | — |
| 2005 | 29.3 | 93.1% | — |
| 2006 | 28.1 | 89.2% | — |
| 2007 | 27.9 | 88.6% | — |
| 2008 | 28.5 | 90.0% | — |
| 2009 | 25.5 | 80.7% | — |
| 2010 | 26.4 | 83.8% | — |
| 2011 | 22.3 | 70.6% | — |
| 2012 | 21.9 | 69.4% | — |
| 2013 | 25.1 | 79.5% | — |
| 2014 | 27.4 | 86.8% | — |
| 2015 | 27 | 85.7% | — |
| 2016 | 25.6 | 81.1% | — |
| 2017 | 19.2 | 60.7% | — |
| 2018 | 26.7 | 84.5% | — |
| 2019 | 26.8 | 84.9% | — |
| 2020 | 26 | 82.1% | — |
| 2021 | 26 | 82.4% | — |
| 2022 | 24.5 | 77.7% | — |
| 2023 | 8.4 | 26.6% | — |
| 2024 | 4.9 | 15.4% | — |
| 2025 | 10.3 | 32.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 5 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Dec 1915 | Operating | — | coming soon |
| 6 | Conventional Hydroelectric | HY | 2.2 | 1.8 | Dec 1915 | Operating | — | coming soon |
Owner / operator
Operator: Alaska Electric Light&Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Alaska Electric Light&Power Co | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Lake Dorothy Hydroelectric Project | 14 MW | 9.9 km |
| Gold Creek | 10 MW | 18.5 km |
| Salmon Creek 1 | 9 MW | 21.2 km |
| Lemon Creek | 62 MW | 23.4 km |
| Snettisham | 78 MW | 28.9 km |
| Industrial Plant | 42 MW | 30.1 km |