South CarolinaSolar Rebates — Utility, State & Local Programs
South Carolina solar rebates in 2026 come from three sources: the state itself, regulated utilities, and local municipal programs. Below is the active program inventory for SC, plus how each one stacks with the federal 30% Residential Clean Energy Credit.
State-Level Programs
South Carolina offers a 25% state income tax credit on installed solar costs, capped at $3,500. This is technically a tax credit, not a rebate — it reduces your state income tax liability rather than paying out cash up front. Carry-forward rules typically allow unused credit to apply in future tax years.
Utility Rebate Programs
The following utilities operate in South Carolina and may run rebate programs at any given time. Program availability is volatile — utilities open and close incentive windows multiple times per year, often without notice. Check directly with your utility before committing to an installation timeline.
How Rebates Stack
Rebates and tax credits combine in a specific order. Cash rebates from utilities reduce the system cost basis before the federal 30% credit is applied. State income tax credits, in contrast, are claimed independently against state tax liability and do not reduce the federal credit basis.
The practical result: a $24,000 install in South Carolina with a $1,500 utility rebate would have its federal credit calculated on $22,500 — yielding a $6,750 federal credit instead of $7,200. Worth modeling carefully before signing a contract that includes large utility rebates.