PERI Greenhouse 100 Suppliers State Press Release For Minnesota Using 2023 Data
February 11, 2026
UMass Amherst Political Economy Research Institute Releases New Greenhouse 100 Suppliers Index Tracking Corporate Fossil Fuel Emissions
Rollback in EPA reporting requirements may end Greenhouse 100 Suppliers
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 Suppliers Index, ranking the largest corporate contributors to greenhouse gas emissions from fossil fuel supplies.
The index reports 2023 greenhouse gas emissions resulting from oil, natural gas and coal supplies using the latest—and possibly last—data available from the U.S. Environmental Protection Agency’s Greenhouse Gas Reporting Program. In September 2025, the agency
announced
its intention to end most of the program and suspend remaining reporting requirements until 2034.
“The Greenhouse
100 Suppliers 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.”
The Greenhouse 100 Suppliers rankings represent the first comprehensive database of corporate responsibility for greenhouse gas emissions and potential liability for resulting climate damage.
"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 rankings draw on EPA data for oil and natural gas suppliers, combined with coal supplier data from the U.S. Energy Information Administration and the Mine Safety and Health Administration, using methods detailed in a peer-reviewed journal article. Coal suppliers were exempt from Greenhouse Gas Reporting Program requirements.
The PERI indexes track corporate environmental and environmental justice performance across U.S.-based industrial activity using uniform, mandated and comparable data, expanding federal facility-level reporting to the company level.
The following is PERI's analysis for Minnesota.
Overall
Summary for Minnesota
Value
Total 2023 CO2 from supplied fuels (millions of metric tons):
90.2
Percentage of national total:
1.8
Rank among US states (1=top):
13
CO2 from petroleum (mmt):
67.3
CO2 from natural gas (mmt):
23.0
CO2 from coal (mmt):
0.0
Top 5 Supplier Companies in Minnesota
Company
CO2 (mmt)
CO2 from oil (mmt)
CO2 from nat. gas (mmt)
CO2 from coal (mmt)
Num. facilities
Koch Industries
51.1
51.1
0.0
0.0
1
Marathon Petroleum
16.2
16.2
0.0
0.0
1
CenterPoint Energy
10.0
0.0
10.0
0.0
1
Xcel Energy
6.8
0.0
6.8
0.0
2
WEC Energy Group
5.0
0.0
5.0
0.0
1
Top 10 Supplier Facilities in Minnesota
Facility Name
CO2 (metric tons)
Company
Flint Hills Resources Pine Bend Refinery
51,099,104
Koch Industries
St. Paul Park Refining Company, LLC
16,188,560
Marathon Petroleum
CenterPoint Energy Minnesota Gas
10,037,277
CenterPoint Energy
Northern States Power Company, A Minnesota Corporation
6,077,150
Xcel Energy
Minnesota Energy Resources Corporation
5,011,481
WEC Energy Group
Northern States Power Company, A Minnesota Corporation - North Dakota
743,003
Xcel Energy
City of Duluth, Public Works and Utilities Department
360,130
City of Duluth, MN
AUSTIN UTILITIES
138,691
City of Austin, MN
OWATONNA PUBLIC UTILITIES - WEST OWATONN
137,781
City of Owatonna, MN
Hutchinson Utilities - Natural Gas Distribution System
107,688
City of Hutchinson, MN
Top 10 facilities in Minnesota
Facility Name
CO2 (metric tons)
Company
Flint Hills Resources Pine Bend Refinery
51,099,104
Koch Industries
St. Paul Park Refining Company, LLC
16,188,560
Marathon Petroleum
CenterPoint Energy Minnesota Gas
10,037,277
CenterPoint Energy
Northern States Power Company, A Minnesota Corporation
6,077,150
Xcel Energy
Minnesota Energy Resources Corporation
5,011,481
WEC Energy Group
Northern States Power Company, A Minnesota Corporation - North Dakota
743,003
Xcel Energy
City of Duluth, Public Works and Utilities Department
360,130
City of Duluth, MN
AUSTIN UTILITIES
138,691
City of Austin, MN
OWATONNA PUBLIC UTILITIES - WEST OWATONN
137,781
City of Owatonna, MN
Hutchinson Utilities - Natural Gas Distribution System
Political Economy Research Institute