South Carolina utility rate cases

Rates are set by the South Carolina Public Service Commission. Households are represented by Office of Regulatory Staff. The average South Carolina home pays about $150 a month for 1,050 kWh (EIA, 2024). South Carolina ranks #15 of 51 for the average monthly bill.

No pending rate case on our list for South Carolina

2 utilities tracked in South Carolina. Enter your ZIP on the home page to see the one that serves you.

Utilities

Dominion Energy South Carolina investor-owned utility

1 on record, none pending

Santee Cooper state-owned utility

1 on record, none pending

Recent decisions

Duke Energy Carolinas South Carolina rate increase Duke Energy Carolinas, SC

Approved Base rate case

+$0.84a month

Santee Cooper large load and data center rate Santee Cooper, SC

On bills now Rate matter

The large load rate is meant to make data centers and other big new customers cover the cost of the power plants and lines built to serve them, rather than spreading that cost across residential bills.

no figure yet

Electric Rate Stabilization Adjustment, first application under SC's new law Duke Energy Progress, SC

Denied Rider or surcharge Decided Jul 15, 2026

Regulators turned down this rate increase for now and no change is in effect; Duke is appealing the denial to the state Supreme Court.

flat

Dominion Energy South Carolina rate increase Dominion Energy South Carolina, SC

On bills now Base rate case From Jul 2026

+$12a month

Duke Energy Progress South Carolina rate increase Duke Energy Progress, SC

Approved Base rate case From Feb 2026

+$11a month

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