Wood biomassOperatingCAISO

Pacific-Ultrapower Chinese Station

Wood biomass power plant in Tuolumne County, California. 25 MW of nameplate capacity across 1 generator, operated by IHI Power Services Corp.

Also known as IHI Chinese Station · EIA plant 50560

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Sonora 1New MelonesTullochPacific-Ultrapower Ch…5 km
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5 plants within 11 km, from EIA coordinates.

Key facts

Capacity
25 MWNameplate
Generators
1 operatingEIA-860M, August 2026
Operating since
October 1986First generator online
Operator
IHI Power Services CorpEIA operator ID 58650
Grid
CAISOBalancing authority CISO
Price nodes
2 CAISO nodesResource nodes with prices
Location
Tuolumne County, CA37.8741, −120.4776
EIA plant ID
50560EIA plant page

Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.

How much power Pacific-Ultrapower Chinese Station produces

Free · EIA-923

Net generation, 2025

126 GWh

126,204 MWh, final

Capacity factor, 2025

57.6%

2024: 64.1%

January to July 2026

56.1 GWh

Provisional

Range, 2015 to 2025

111.0–140.8

GWh a year. Low 2016, high 2024

Annual net generation, GWhCapacity factor below each year
Annual net generation from EIA-923
YearNet generation, MWhCapacity factorMonths reported
2000Not reportedNot reported0 of 12
2001110,776Not reported12 of 12
2002126,672Not reported12 of 12
2003130,442Not reported12 of 12
2004132,888Not reported12 of 12
2005132,893Not reported12 of 12
2006126,838Not reported12 of 12
2007123,220Not reported12 of 12
2008118,460Not reported12 of 12
2009128,401Not reported12 of 12
2010112,90851.6%12 of 12
2011136,32462.2%12 of 12
2012143,89265.5%12 of 12
2013128,14958.5%12 of 12
201486,65759.0%8 of 12
2015133,79961.1%12 of 12
2016110,99650.5%12 of 12
2017118,56454.1%12 of 12
2018140,50864.2%12 of 12
2019134,86961.6%12 of 12
2020127,04557.9%12 of 12
2021131,97960.3%12 of 12
2022127,29258.1%12 of 12
2023132,75760.6%12 of 12
2024140,75264.1%12 of 12
2025126,20457.6%12 of 12
2026 (provisional, partial year)56,11244.1%7 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 · CAISO

Emissions

Free · EPA CAMPD

No EPA emissions units are linked to this plant.

Water use

Free · EIA-923 cooling, USGS

No EIA cooling-water record for this plant in 2024.

Generators

Free · EIA-860M
GeneratorTechnologyNameplate MWOnline since
GEN1Wood/Wood Waste Biomass25.0October 1986

Ownership and offtake

Pro
Pro

Ownership and offtake are part of Pro

Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists IHI Power Services Corp as the operator, which is not always the owner.

Modeled data

Pro

Pro adds modeled values for this plant. Everything above stays free.

Modeled

Generation potential vs reported

Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.

Analyst and MCP

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Power plants near Pacific-Ultrapower Chinese Station

Questions about Pacific-Ultrapower Chinese Station

How much power does Pacific-Ultrapower Chinese Station produce?

Pacific-Ultrapower Chinese Station reported 126,204 MWh (126 GWh) of net generation in 2025, a 57.6% capacity factor on 25 MW of nameplate capacity. From January to July 2026 it reported 56.1 GWh, which is provisional.

Where is Pacific-Ultrapower Chinese Station?

Pacific-Ultrapower Chinese Station is in Tuolumne County, California, at 37.8741, −120.4776. It is in the California Independent System Operator balancing area (CISO).

Who operates Pacific-Ultrapower Chinese Station?

EIA-860M for August 2026 lists IHI Power Services Corp as the operator (EIA operator ID 58650). The operator is not always the owner.

When did Pacific-Ultrapower Chinese Station start operating?

Its first generator began operating in October 1986, according to EIA-860M.

Does InfraMap have power prices for Pacific-Ultrapower Chinese Station?

Yes. InfraMap has CAISO day-ahead and real-time prices at 2 price nodes linked to Pacific-Ultrapower Chinese Station, 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)
  • CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
  • Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)

Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page