MROW eGRID Subregion - MRO West Emission Factor (2023)

EPA eGRID2023 Rev2 · States: MN, IA, ND, SD, NE, MT, WI, MO, IL · Dirty

Upper Midwest grid spanning Minnesota through Nebraska, with growing wind generation. This page provides the official EPA eGRID2023 electricity emission factors for the MROW subregion, used for GHG Protocol Scope 2 location-based emissions reporting.

Emission Factors

926.552

lb CO₂e / MWh

0.4203

kg CO₂e / kWh

51.25%

Carbon-free

43.46%

Renewable

The MROW subregion is 20% dirtier than the US average (770.9 lb CO₂e/MWh).

All Pollutants

Pollutant	lb / MWh	kg / kWh	Scope
CO₂e (total GHG)	926.552	0.4203	Scope 2
CO₂	920.13	0.4174	Scope 2
CH₄ (methane)	0.097	0.00004400	Scope 2
N₂O (nitrous oxide)	0.014	0.00000635	Scope 2
NO_x	0.711	0.00032250	Air quality
SO₂	0.896	0.00040642	Air quality
CO₂ non-baseload	1776.697	0.8059	Scope 2 (marginal)

Generation Mix

Solar1.2%

Wind37.6%

Nuclear7.8%

Hydro4.1%

Natural Gas13.1%

Coal35.2%

Biomass0.7%

kWh to CO₂ Calculator

Enter electricity consumption (kWh):

Using MROW emission factor: 926.552 lb CO₂e/MWh = 0.4203 kg/kWh. Source: EPA eGRID2023.

Data Source & Methodology

These emission factors are from EPA eGRID2023 Rev2 (released June 2025), the official US government source for grid electricity emission rates. eGRID uses annual net generation and emissions data from all US power plants to calculate subregion-level output emission rates.

For GHG Protocol Scope 2 reporting, use the CO₂e total output emission rate: 926.552 lb/MWh or 0.4203 kg/kWh.

Primary utility: Northwestern Energy

Get This Data via API

Query MROW emission factors by ZIP code:

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

Read the API docs - free, no key, no signup.

Neighboring Subregions

MROE - MRO East NWPP - WECC Northwest RFCW - RFC West RMPA - WECC Rockies

Frequently Asked Questions

What is the MROW emission factor for Scope 2 reporting?

The MROW eGRID2023 Scope 2 location-based emission factor is 926.552 lb CO₂e per MWh (0.4203 kg CO₂e per kWh). This is the value to use in GHG Protocol location-based Scope 2 calculations for facilities in the MRO West subregion.

Which states are in the MROW subregion?

The MROW (MRO West) eGRID subregion covers: MN, IA, ND, SD, NE, MT, WI, MO, IL. Upper Midwest grid spanning Minnesota through Nebraska, with growing wind generation.

How do I convert kWh to kg CO₂e for MROW?

Multiply kWh by 0.4203. Example: 50,000 kWh × 0.4203 = 21015 kg CO₂e (21.02 tonnes).

Query any US ZIP code via API

33,616 ZIP codes · All 27 eGRID subregions · EPA eGRID2023 + 2024 preliminary

Read the API docs · Scope 2 guide