Maryland Electricity Emission Factor 2023

EPA eGRID2023 Rev2 · 2 eGRID subregions

Power plants in Maryland emitted 522.2 lb CO2e per MWh generated in 2023 (0.2369 kg/kWh), 32% cleaner than the US average, according to EPA's eGRID2023 state rate. Their generation was 52% 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.

522.2
lb CO2e / MWh (state)
0.2369
kg CO2e / kWh
52%
Carbon-free
10%
Renewable

eGRID Subregions in Maryland

Maryland'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 MD ZIPs
RFCE RFC East 599.17 0.2718 40.35% 84%
RFCW RFC West 916.054 0.4155 36.06% 16%

Generation Mix

Solar2.6%
Wind1.3%
Nuclear41.6%
Hydro5.1%
Natural Gas42.6%
Coal4.7%
Biomass0.9%
Other Fossil0.9%

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

kWh to CO2 Calculator - Maryland

Using the RFCE subregion factor (599.17 lb CO2e/MWh = 0.2718 kg/kWh), which covers 84% of Maryland's ZIP codes; for other parts of the state look up the ZIP. Source: EPA eGRID2023.

How to Use Maryland'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 Maryland 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)

Delaware
704 lb/MWh
Illinois
474 lb/MWh
Indiana
1466 lb/MWh
Kentucky
1747 lb/MWh
Michigan
797 lb/MWh
New Jersey
470 lb/MWh
Maryland
522 lb/MWh

Frequently Asked Questions

What is Maryland's electricity emission factor?

For Scope 2 reporting, it depends on the ZIP: Maryland's ZIP codes are in RFCE (599.17 lb CO2e/MWh, 84% of ZIPs), RFCW (916.054 lb CO2e/MWh, 16% of ZIPs). EPA's state rate for plants in Maryland is 522.2 lb CO2e/MWh, 32% cleaner than the US average.

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

Power plants in Maryland generated 52% carbon-free and 10% renewable electricity in 2023. At 522 lb CO2e/MWh, the state rate is 32% 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