Natural gasOilOperatingMISO

Preston (IA)

Natural gas and oil power plant in Jackson County, Iowa. 3.6 MW of nameplate capacity across 2 generators, operated by City of Preston - (IA).

Also known as EIA plant 1176

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Maquoketa 2Maquoketa 1DPC YorkClinton SchoolsWhiteside Solar 1 CSGPreston (IA)10 km
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6 plants within 29 km, from EIA coordinates.

Key facts

Capacity
3.6 MWNatural gas 1.8 · Oil 1.8
Generators
2 operatingEIA-860M, August 2026
Operating since
December 1980First generator online
Operator
City of Preston - (IA)EIA operator ID 15349
Grid
MISOBalancing authority MISO
Price nodes
None linkedNo verified ISO node
Location
Jackson County, IA42.0507, −90.3942
EIA plant ID
1176EIA plant page

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

How much power Preston (IA) produces

Free · EIA-923

Net generation, 2025

9 MWh

9 MWh, final

Capacity factor, 2025

0.0%

2024: 0.0%

January to July 2026

Not reported

Provisional. 0 of 7 months reported

Range, 2015 to 2025

0.0–54.0

MWh a year. Low 2015, high 2023

Annual net generation, MWhCapacity factor below each year
Annual net generation from EIA-923
YearNet generation, MWhCapacity factorMonths reported
20000Not reported12 of 12
2001Not reportedNot reported0 of 12
2002243Not reported12 of 12
2003308Not reported12 of 12
2004251Not reported12 of 12
200569Not reported12 of 12
2006209Not reported12 of 12
200779Not reported12 of 12
200854Not reported12 of 12
200945Not reported12 of 12
201010.0%12 of 12
2011220.1%12 of 12
2012240.1%12 of 12
201310.0%12 of 12
201400.0%12 of 12
201500.0%12 of 12
201610.0%12 of 12
201700.0%12 of 12
201800.0%12 of 12
2019Not reportedNot reported0 of 12
202026Not reported12 of 12
2021220.1%12 of 12
2022100.0%12 of 12
2023540.2%12 of 12
202490.0%12 of 12
202590.0%12 of 12
2026 (provisional, partial year)Not reportedNot reported0 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

No verified ISO price node is linked to this plant, or its price history could not load.

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
4Natural Gas Internal Combustion Engine1.8December 1980
5Petroleum Liquids1.8January 2020

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 City of Preston - (IA) 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.

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Questions about Preston (IA)

How much power does Preston (IA) produce?

Preston (IA) reported 9 MWh (9 MWh) of net generation in 2025, a 0.0% capacity factor on 3.6 MW of nameplate capacity.

Where is Preston (IA)?

Preston (IA) is in Jackson County, Iowa, at 42.0507, −90.3942. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).

Who operates Preston (IA)?

EIA-860M for August 2026 lists City of Preston - (IA) as the operator (EIA operator ID 15349). The operator is not always the owner.

Is Preston (IA) a natural gas or a oil plant?

Both. Natural gas capacity totals 1.8 MW and oil capacity totals 1.8 MW.

When did Preston (IA) start operating?

Its first generator began operating in December 1980, according to EIA-860M.

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)

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