South Fork
Prince of Wales-Hyder County, Alaska · EIA plant ID 56265 · Operator: Alaska Power and Telephone Co
Nameplate2MWSummer 2 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor34%hydro units, summer MW
Heat rate—thermal plants only
First online2005
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) |
|---|---|---|---|
| 2005 | 0 | 0.0% | — |
| 2006 | 5.2 | 31.0% | — |
| 2007 | 7 | 41.8% | — |
| 2008 | 6.6 | 39.3% | — |
| 2009 | 5.7 | 34.3% | — |
| 2010 | 5.8 | 34.6% | — |
| 2011 | 6.1 | 36.7% | — |
| 2012 | 6.6 | 39.6% | — |
| 2013 | 5.7 | 34.3% | — |
| 2014 | 5.9 | 35.3% | — |
| 2015 | 5.9 | 35.4% | — |
| 2016 | 5.3 | 31.9% | — |
| 2017 | 5.8 | 34.6% | — |
| 2018 | 4.1 | 24.9% | — |
| 2019 | 4.5 | 26.9% | — |
| 2020 | 6 | 35.7% | — |
| 2021 | 6.2 | 37.3% | — |
| 2022 | 5.2 | 31.0% | — |
| 2023 | 5.4 | 32.7% | — |
| 2024 | 4.8 | 28.9% | — |
| 2025 | 5.6 | 33.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 2 | 1.9 | Jul 2005 | Operating | — | coming soon |
Owner / operator
Operator: Alaska Power and Telephone Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Alaska Power and Telephone Co | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Klawock Power Generation Station | 3 MW | 12.3 km |
| False Island | 4 MW | 17.4 km |
| Black Bear Lake | 5 MW | 18.8 km |
| Craig (AK) | 3 MW | 18.8 km |
| Thorne Bay Plant | 1 MW | 26.5 km |
| Hiilangaay Hydro | 5 MW | 44.3 km |