Wyoming Electricity Emission Factor 2023

EPA eGRID2023 Rev2 · 2 eGRID subregions · Dirty

Wyoming's electricity grid has a CO₂e emission factor of 838.9 lb/MWh (0.3805 kg/kWh) - 9% dirtier than the US average. The grid is 50% carbon-free and 48% renewable. These are the official EPA eGRID2023 values used for GHG Protocol Scope 2 location-based emissions reporting.

838.9

lb CO₂e / MWh

0.3805

kg CO₂e / kWh

50%

Carbon-free

48%

Renewable

eGRID Subregions in Wyoming

Wyoming spans 2 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
NWPP	WECC Northwest	635.267	0.2882	58.2%	Average
RMPA	WECC Rockies	1042.539	0.4729	41.86%	Very Dirty

Generation Mix

Solar3.1%

Wind11.6%

Nuclear3.1%

Hydro38.7%

Natural Gas24.8%

Coal16.4%

Biomass1.0%

Geothermal0.7%

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

Electricity cost in Wyoming

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

Sector	$/kWh
Residential	$0.1468
Commercial	$0.095
Industrial	$0.0875
All sectors	$0.0989

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 PacifiCorp East (WY's balancing authority). Red = dirtiest, green = cleanest. Data: EIA-930 (~24h lag).

Hours in local standard time. Swing: 1.89× between cleanest (11:00 local) and dirtiest (23:00 local).

Read full guide on hourly grid carbon intensity →

Derived metrics for Wyoming

Carbon cost of electricity: $310 per tonne CO₂e (residential rate ÷ grid intensity)
Annual per-capita CO₂e from electricity: 13,775 kg/yr (29.1k kWh × grid factor)
10,000 mi/yr EV emissions: 1419 kg CO₂e (at 0.30 kWh/mi)
Same miles in gas car: ~4,000 kg CO₂e (400 g/mi baseline)
EV vs gas savings: 65% cleaner
Grid trend 2018-2023: -18.7% (cleaner)

kWh to CO₂ Calculator - Wyoming

Enter electricity consumption (kWh):

Using Wyoming average: 838.9 lb CO₂e/MWh = 0.3805 kg/kWh. Source: EPA eGRID2023.

How to Use Wyoming'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 Wyoming 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

Colorado

1043 lb/MWh

Idaho

635 lb/MWh

Montana

781 lb/MWh

Nebraska

946 lb/MWh

Nevada

590 lb/MWh

Oregon

635 lb/MWh

Wyoming

839 lb/MWh

Frequently Asked Questions

What is Wyoming's electricity emission factor?

Wyoming's EPA eGRID2023 electricity emission factor is 838.9 lb CO₂e per MWh (0.3805 kg per kWh). This is 9% dirtier than the US national average.

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

Multiply the facility's annual kWh consumption by 0.3805 to get kg CO₂e. Divide by 1,000 for metric tonnes. For facilities spanning multiple Wyoming subregions, use the emission factors API to get the exact factor by ZIP code.

How clean is Wyoming's electricity grid?

Wyoming's grid is 50% carbon-free and 48% renewable. At 839 lb CO₂e/MWh, it is 9% 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