Iowa
Iowa ranks 10th in the nation in industrial emissions. Its industrial profile reflects the state’s agriculture-reliant economy. Agricultural processing (labeled “miscellaneous combustion” by the EPA) accounts for more than half of all industrial emissions. Production of non-fluorinated chemicals, primarily ammonia for fertilizer, is responsible for more than a quarter of emissions. Iowa leads the nation in ethanol and biofuel production. Industrial production is concentrated in eastern and central Iowa.

- This map shows the top 20 emitters, coded by industrial sector. The size of the circles corresponds to emissions: the larger the circle, the higher the emissions.
- Disadvantaged communities (as determined by the federal government) are shaded blue.

- The inner circle provides a visual representation of the share of emissions generated by each industrial sector.
- The outer circle also indicates the share of a sector’s emissions generated in disadvantaged communities.
Legislative context and opportunity
If you are aware of recently enacted legislation in Iowa that is advancing industrial decarbonization, please let us know. The high-level context below is intended to serve as an indicator of where there may be future legislative opportunities.
Iowa’s deployment of significant renewables has made it a clean energy leader over the past 20 years (wind and solar generation provided 64 percent of Iowa’s electricity generation in 2023). However, a 2024 report by the Iowa Environmental Council emphasized that aggressive action is needed from Iowa utilities to achieve a fully carbon-free electricity sector by 2035 and pointed out that other sectors, including industry, are reliant upon Iowa utilities meeting these timelines.
In 2024, the Iowa Utilities Board announced the approval of Summit Carbon Solutions’ application for a permit to construct, operate, and maintain a carbon sequestration pipeline through 29 counties in the state. A total of 57 ethanol plants, including at least 30 in Iowa, plan to connect with the pipeline, which will transport carbon dioxide emissions to be sequestered underground in North Dakota. In a 2023 fact sheet, the Renewable Thermal Collaborative identified key actions that policy makers and other stakeholders can take to move closer to industrial targets by electrifying subsectors in Iowa, particularly the wet corn milling and soybean sectors.
Explore more recent legislation in Iowa and all 50 states by clicking here.