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PERI Greenhouse 100 Polluters State Press Release For Kansas

November 6, 2025

 

With Future Data in Doubt, UMass Amherst Political Economy Research Institute Names Top U.S. Climate Polluters

Rollback in EPA reporting requirements may end Greenhouse 100 Polluters Index and access to vital public information

AMHERST, Mass. — Researchers at the University of Massachusetts Amherst’s Political Economy Research Institute (PERI) today published a new Greenhouse 100 Polluters Index, reporting 2023 greenhouse gas emissions using the latest—and possibly last—data available from the U.S. Environmental Protection Agency’s Greenhouse Gas Reporting Program.

On Sept. 12, the EPA announced plans to end most of the program and suspend all remaining reporting requirements until 2034. The decision could leave the public without reliable, standardized data on corporate climate pollution for nearly a decade.

“The Greenhouse 100 Index informs consumers, shareholders, regulators, lawmakers and communities about corporate releases of climate-altering pollutants into our environment,” says Professor Michael Ash, co-director of PERI's Corporate Toxics Information Project. “The EPA’s decision to effectively end the Greenhouse Gas Reporting Program removes access to vital public information and leaves public and private decision-makers flying in the dark or relying on a patchwork of voluntary and potentially cherrypicked or greenwashed reports.”

Launched in 2018, PERI’s free, open-access online tool provides data on every company that reports to the EPA. The resource includes state-by-state rankings and detailed reports identifying all companies and facilities responsible for each state’s greenhouse gas emissions. Archives of earlier editions remain available to the public.

The following is PERI's analysis for Kansas.

Overall

Summary for KansasValue
Total 2023 CO2 equivalent emissions (millions of metric tons):32.8
Percentage of national total:1.3
Rank among US states (1=top):30

Top 5 Polluter Companies in Kansas

CompanyCO2 equivalent emissions (mmt)% of state totalNum. facilities
Evergy Inc.16.051.79
Icahn Enterprises2.68.52
HF Sinclair Corporation1.96.01
Sunflower Electric Power Corporation1.85.84
CRH PLC1.34.21

Top 5 Sectors in Kansas

Sector NameCO2 equivalent emissions (mmt)Num. facilities
Power Plants19.321
Petroleum Refineries3.13
Cement Production2.22
Ammonia Manufacturing1.92
Municipal Landfills1.015

Top 10 facilities in Kansas

Facility NameCO2 (metric tons)Company
La Cygne Generating Station6,695,259Evergy Inc.
Jeffrey Energy Center6,117,109Evergy Inc.
HF SINCLAIR EL DORADO REFINING LLC1,851,451HF Sinclair Corporation
Lawrence Energy Center1,824,440Evergy Inc.
COFFEYVILLE RESOURCES NITROGEN FERT.1,640,985Icahn Enterprises
Holcomb1,622,104Sunflower Electric Power Corporation
ASH GROVE CEMENT CO-CHANUTE PLANT1,299,990CRH PLC
CHS MCPHERSON REFINERY INC.1,248,855CHS Inc.
Coffeyville Resources Refining & Marketing, LLC1,000,741Icahn Enterprises
MONARCH CEMENT COMPANY (THE)939,681MONARCH CEMENT CO

“In making this information available, we are building on the historic achievements of the right-to-know movement,” Ash adds. “Our goal is to engender public participation in environmental decision-making, and to help residents translate the right to know into the right to clean air, clean water and a livable planet.”

The EPA’s rollback of reporting and disclosure requirements also threatens other PERI indexes that track companies’ release of pollution into the air and water, and near schools.

Contacts:
Michael Ash, mash@umass.edu

Aaron Kupec, akupec@umass.edu