Power plants in Wisconsin emitted 1163.6 lb CO₂e per MWh generated in 2023 (0.5278 kg/kWh), 51% dirtier than the US average, according to EPA's eGRID2023 state rate. Their generation was 25% carbon-free and 10% renewable. For GHG Protocol Scope 2 location-based reporting, use the eGRID subregion factor of each facility's ZIP (below), not the state rate: power flows across state lines within a subregion.

1163.6

lb CO₂e / MWh (state)

0.5278

kg CO₂e / kWh

25%

Carbon-free

10%

Renewable

eGRID Subregions in Wisconsin

Wisconsin's ZIP codes fall in 3 eGRID subregions. These are the Scope 2 factors; use the ZIP-level API to get the one for each facility.

Generation Mix

Generation by power plants in Wisconsin, 2023 (EPA eGRID2023 state resource mix).

kWh to CO₂ Calculator - Wisconsin

Enter electricity consumption (kWh):

Using the MROE subregion factor (1404.963 lb CO₂e/MWh = 0.6373 kg/kWh), which covers 42% of Wisconsin's ZIP codes; for other parts of the state look up the ZIP. Source: EPA eGRID2023.

How to Use Wisconsin's Emission Factor for Scope 2 Reporting

For GHG Protocol Scope 2 location-based emissions reporting, multiply each facility's electricity consumption by the emission factor for its ZIP code's eGRID subregion. Facilities in different parts of Wisconsin are in different subregions - use the API to get the exact factor by ZIP code.

Other States Served by the Same Subregions (state rates)

Frequently Asked Questions

What is Wisconsin's electricity emission factor?

For Scope 2 reporting, it depends on the ZIP: Wisconsin's ZIP codes are in MROE (1404.963 lb CO₂e/MWh, 42% of ZIPs), RFCW (916.054 lb CO₂e/MWh, 29% of ZIPs), MROW (926.552 lb CO₂e/MWh, 29% of ZIPs). EPA's state rate for plants in Wisconsin is 1163.6 lb CO₂e/MWh, 51% dirtier than the US average.

How do I calculate Scope 2 emissions for a Wisconsin facility?

Multiply the facility's annual kWh by the kg/kWh factor of its ZIP code's eGRID subregion to get kg CO₂e, and divide by 1,000 for metric tonnes. The emission factors API returns the factor for any ZIP.

How clean is Wisconsin's electricity grid?

Power plants in Wisconsin generated 25% carbon-free and 10% renewable electricity in 2023. At 1164 lb CO₂e/MWh, the state rate is 51% dirtier than the US average of 770.9 lb/MWh.

Get exact emission factors by ZIP code

33,700+ ZIP codes · All 27 eGRID subregions · CO₂e, NOx, SO₂, generation mix

Read the API docs · Scope 2 calculation guide

Subregion	Name	lb CO₂e/MWh	kg/kWh	Carbon-free	Share of WI ZIPs
MROE	MRO East	1404.963	0.6373	17.33%	42%
RFCW	RFC West	916.054	0.4155	36.06%	29%
MROW	MRO West	926.552	0.4203	51.34%	29%

Wisconsin Electricity Emission Factor 2023