Wisconsin Electricity Emission Factor 2023

EPA eGRID2023 Rev2 · 3 eGRID subregions · Very Dirty

Wisconsin's electricity grid has a CO₂e emission factor of 1082.5 lb/MWh (0.4910 kg/kWh) - 40% dirtier than the US average. The grid is 35% carbon-free and 23% renewable. These are the official EPA eGRID2023 values used for GHG Protocol Scope 2 location-based emissions reporting.

1082.5

lb CO₂e / MWh

0.4910

kg CO₂e / kWh

35%

Carbon-free

23%

Renewable

eGRID Subregions in Wisconsin

Wisconsin spans 3 eGRID subregions. Use the ZIP-level API to get the exact factor for each facility.

Subregion	Name	lb CO₂e/MWh	kg/kWh	Carbon-free	Rating
MROE	MRO East	1404.963	0.6373	17.28%	Very Dirty
RFCW	RFC West	916.054	0.4155	36.04%	Dirty
MROW	MRO West	926.552	0.4203	51.25%	Dirty

Generation Mix

Solar4.7%

Wind5.4%

Hydro4.3%

Natural Gas42.9%

Coal39.5%

Biomass3.0%

Generation mix shown for MROE (primary subregion). See subregion pages for full breakdowns.

Electricity cost in Wisconsin

Latest monthly state-level average rate (EIA Form 861, 2026-04):

Sector	$/kWh
Residential	$0.1921
Commercial	$0.1338
Industrial	$0.0884
All sectors	$0.1345

State-level averages, not utility-specific tariffs. For exact pricing, check your utility's published rate schedule.

24-hour grid carbon profile

Average hourly CO₂e intensity across the last 7 days from Midcontinent ISO (WI's balancing authority). Red = dirtiest, green = cleanest. Data: EIA-930 (~24h lag).

Hours in local standard time. Swing: 1.22× between cleanest (11:00 local) and dirtiest (21:00 local).

Read full guide on hourly grid carbon intensity →

Derived metrics for Wisconsin

Carbon cost of electricity: $301 per tonne CO₂e (residential rate ÷ grid intensity)
Annual per-capita CO₂e from electricity: 7,361 kg/yr (11.6k kWh × grid factor)
10,000 mi/yr EV emissions: 1912 kg CO₂e (at 0.30 kWh/mi)
Same miles in gas car: ~4,000 kg CO₂e (400 g/mi baseline)
EV vs gas savings: 52% cleaner
Grid trend 2018-2023: -25.8% (cleaner)

kWh to CO₂ Calculator - Wisconsin

Enter electricity consumption (kWh):

Using Wisconsin average: 1082.5 lb CO₂e/MWh = 0.4910 kg/kWh. 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 may be in different subregions - use the API to get the exact factor by ZIP code.

curl "https://emission-factors.com/api/lookup?zip=YOUR_ZIP"

Compare with Other States

Illinois

1030 lb/MWh

Indiana

916 lb/MWh

Iowa

1088 lb/MWh

Kentucky

910 lb/MWh

Michigan

1099 lb/MWh

Minnesota

927 lb/MWh

Wisconsin

1083 lb/MWh

Frequently Asked Questions

What is Wisconsin's electricity emission factor?

Wisconsin's EPA eGRID2023 electricity emission factor is 1082.5 lb CO₂e per MWh (0.4910 kg per kWh). This is 40% dirtier than the US national average.

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

Multiply the facility's annual kWh consumption by 0.4910 to get kg CO₂e. Divide by 1,000 for metric tonnes. For facilities spanning multiple Wisconsin subregions, use the emission factors API to get the exact factor by ZIP code.

How clean is Wisconsin's electricity grid?

Wisconsin's grid is 35% carbon-free and 23% renewable. At 1083 lb CO₂e/MWh, it is 40% dirtier than the US average of 770.9 lb/MWh.

Get exact emission factors by ZIP code

33,616 ZIP codes · All 27 eGRID subregions · CO₂e, NOx, SO₂, generation mix

Read the API docs · Scope 2 calculation guide