South Carolina Electricity Emission Factor 2023

EPA eGRID2023 Rev2 · 2 eGRID subregions · Average

South Carolina's electricity grid has a CO₂e emission factor of 721.2 lb/MWh (0.3271 kg/kWh) - 6% cleaner than the US average. The grid is 40% carbon-free and 10% renewable. These are the official EPA eGRID2023 values used for GHG Protocol Scope 2 location-based emissions reporting.

721.2

lb CO₂e / MWh

0.3271

kg CO₂e / kWh

40%

Carbon-free

10%

Renewable

eGRID Subregions in South Carolina

South Carolina 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
SRVC	SERC Virginia/Carolina	596.326	0.2705	49.75%	Clean
SRSO	SERC South	846.007	0.3837	29.9%	Dirty

Generation Mix

Solar6.0%

Nuclear39.9%

Hydro1.4%

Natural Gas39.3%

Coal10.5%

Biomass2.1%

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

Electricity cost in South Carolina

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

Sector	$/kWh
Residential	$0.1706
Commercial	$0.1161
Industrial	$0.0745
All sectors	$0.1206

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 Dominion South Carolina (SC's balancing authority). Red = dirtiest, green = cleanest. Data: EIA-930 (~24h lag).

Hours in local standard time. Swing: 1.32× between cleanest (10:00 local) and dirtiest (21:00 local).

Read full guide on hourly grid carbon intensity →

Derived metrics for South Carolina

Carbon cost of electricity: $631 per tonne CO₂e (residential rate ÷ grid intensity)
Annual per-capita CO₂e from electricity: 3,917 kg/yr (14.5k kWh × grid factor)
10,000 mi/yr EV emissions: 812 kg CO₂e (at 0.30 kWh/mi)
Same miles in gas car: ~4,000 kg CO₂e (400 g/mi baseline)
EV vs gas savings: 80% cleaner
Grid trend 2018-2023: -20.2% (cleaner)

kWh to CO₂ Calculator - South Carolina

Enter electricity consumption (kWh):

Using South Carolina average: 721.2 lb CO₂e/MWh = 0.3271 kg/kWh. Source: EPA eGRID2023.

How to Use South Carolina'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 South Carolina 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

Alabama

875 lb/MWh

Georgia

782 lb/MWh

Mississippi

842 lb/MWh

North Carolina

782 lb/MWh

Virginia

724 lb/MWh

South Carolina

721 lb/MWh

Frequently Asked Questions

What is South Carolina's electricity emission factor?

South Carolina's EPA eGRID2023 electricity emission factor is 721.2 lb CO₂e per MWh (0.3271 kg per kWh). This is 6% cleaner than the US national average.

How do I calculate Scope 2 emissions for a South Carolina facility?

Multiply the facility's annual kWh consumption by 0.3271 to get kg CO₂e. Divide by 1,000 for metric tonnes. For facilities spanning multiple South Carolina subregions, use the emission factors API to get the exact factor by ZIP code.

How clean is South Carolina's electricity grid?

South Carolina's grid is 40% carbon-free and 10% renewable. At 721 lb CO₂e/MWh, it is 6% cleaner 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