MidAmerican Iowa nuclear power plant — United States of America

MidAmerican Iowa nuclear power plant is a 540 MW nuclear power station in Iowa, United States of America. It ranks #1166 of 10,884 United States of America power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, nuclear supplies about 17.4% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_nuc_midamericaniowa_unite.

Data provenance

Source of the capacity and fuel values:

capacity: GEM Global Nuclear Power Tracker September 2025 unit-status sum (cancelled); fuel: GEM GNPT

In context: how this plant compares

At 540 MW, MidAmerican Iowa nuclear power plant is below the median nuclear plant in United States of America (1,350 MW). Its current lifecycle status is “Cancelled” — so it is not yet, or no longer, generating at full output. Nuclear plants split uranium to raise steam with no direct CO₂; they run as steady baseload with very high capacity factors and the longest operating lifetimes of any thermal plant.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

How it compares & nearby plants

The #139 largest nuclear power plant of 176 in United States of America by capacity.

United States of America has 176 nuclear power plants in this dataset, together about 270,415 MW of capacity.

Nearby power plants

• Duane Arnold Energy Center · Nuclear · 679.5 MW · Iowa
• Duane Arnold nuclear power plant · Nuclear · 624 MW · Iowa
• Alliant SBG 9802 Toyota · Gas · 1 MW · Iowa
• Alliant SBD 9302 Aegon NP · Oil · 1.2 MW · Iowa
• Alliant SBD 8501 Aegon LI · Oil · 3.1 MW · Iowa
• Alliant SBD 9106 Rockwell CR · Oil · 16 MW · Iowa

Location

Coordinates 42.1004198, -91.777212 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions