Iowa Electricity Emission Factor 2023

EPA eGRID2023 Rev2 · 2 eGRID subregions

Power plants in Iowa emitted 634.2 lb CO2e per MWh generated in 2023 (0.2876 kg/kWh), 18% cleaner than the US average, according to EPA's eGRID2023 state rate. Their generation was 62% carbon-free and 62% 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.

634.2
lb CO2e / MWh (state)
0.2876
kg CO2e / kWh
62%
Carbon-free
62%
Renewable

eGRID Subregions in Iowa

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

SubregionNamelb CO2e/MWhkg/kWhCarbon-freeShare of IA ZIPs
MROW MRO West 926.552 0.4203 51.34% 96%
SRMW SERC Midwest 1248.582 0.5663 31.62% 4%

Generation Mix

Solar0.7%
Wind59.3%
Hydro1.4%
Natural Gas14.7%
Coal23.5%

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

kWh to CO2 Calculator - Iowa

Using the MROW subregion factor (926.552 lb CO2e/MWh = 0.4203 kg/kWh), which covers 96% of Iowa's ZIP codes; for other parts of the state look up the ZIP. Source: EPA eGRID2023.

How to Use Iowa'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 Iowa are in different subregions - use the API to get the exact factor by ZIP code.

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

Other States Served by the Same Subregions (state rates)

Arkansas
998 lb/MWh
Illinois
474 lb/MWh
Michigan
797 lb/MWh
Minnesota
752 lb/MWh
Missouri
1455 lb/MWh
Montana
1064 lb/MWh
Iowa
634 lb/MWh

Frequently Asked Questions

What is Iowa's electricity emission factor?

For Scope 2 reporting, it depends on the ZIP: Iowa's ZIP codes are in MROW (926.552 lb CO2e/MWh, 96% of ZIPs), SRMW (1248.582 lb CO2e/MWh, 4% of ZIPs). EPA's state rate for plants in Iowa is 634.2 lb CO2e/MWh, 18% cleaner than the US average.

How do I calculate Scope 2 emissions for a Iowa 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 Iowa's electricity grid?

Power plants in Iowa generated 62% carbon-free and 62% renewable electricity in 2023. At 634 lb CO2e/MWh, the state rate is 18% cleaner 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