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Petersburg

Wrangell County, Alaska · EIA plant ID 91 · Operator: Petersburg Borough - (AK)
OilConventional HydroelectricPetroleum Liquids

×2 MW hydro retired since 2020 (latest Jun 2023)

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Nameplate15MWSummer 13 MW
Generators8in service
Net generation14GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate10,428Btu/kWhfossil units, electric fuel, HHV
First online1965Runs as rarely runs

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
00.511.5GWh2001200320052007200920112013201520172019202120232025

Capacity factor by year

Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
0%1%2%3%200520102015202020250.7% · 12 mo

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
8,00010,00012,00014,0002005201020152020202510,428 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
200114.1——
200212.3——
200312.30.8%9,985
200412.31.4%9,983
2005141.1%10,131
200613.21.3%10,238
200714.51.3%10,467
200814.11.2%9,730
200912.61.1%10,516
201011.50.8%10,406
201111.40.8%10,637
201214.11.0%10,581
201312.40.7%10,504
201413.80.8%10,539
201513.50.8%10,616
201611.70.1%11,197
201712.71.0%10,593
20189.30.4%10,619
201912.93.5%14,443
202014.10.9%10,120
202114.40.9%10,480
202214.40.8%10,351
20230.80.8%10,410
2024130.5%12,739
202514.40.7%10,428

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 IDTechnologyPrime moverNameplate MWSummer MWOnlineStatusPlanned retirementOEM / model
4Conventional HydroelectricHY1.81.8Dec 2023Operating—coming soon
IC1Petroleum LiquidsIC2.61.7Dec 1972Operating—coming soon
IC3Petroleum LiquidsIC1.21Oct 1965Operating—coming soon
IC4Petroleum LiquidsIC0.60.6Mar 1979Operating—coming soon
IC5Petroleum LiquidsIC0.80.7Mar 1979Operating—coming soon
IC6Petroleum LiquidsIC2.62.3Sep 1993Operating—coming soon
IC7Petroleum LiquidsIC2.62.3Aug 2001Operating—coming soon
IC8Petroleum LiquidsIC2.52.2Oct 2012Operating—coming soon
3Conventional HydroelectricHY1.61.6Mar 1954Retired Jun 2023—coming soon
IC2Petroleum LiquidsIC0.30.2Dec 1972Retired Aug 2017—coming soon

Owner / operator

Operator: Petersburg Borough - (AK). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Petersburg Borough - (AK)100.0%15 MW

Nearby plants

Within 80 km.
Wrangell12 MW52.6 km
Kake3 MW61 km