Which utility serves this customer?
Each South Carolina utility has different net metering rules, rebate programs, and pitch angles. Selecting here loads the right calculator math and proposal template.
Dominion Energy SC
Dominion Energy SC · 24 SC counties · Midlands to Lowcountry
Solar Choice TOU since 2021. Pre-5/16/2019 (NEM 1.0) cohort moved to Solar Choice TOU on 1/1/2026; 5/17/2019–5/31/2021 (NEM 2.0) cohort still on full retail 1:1 through 5/31/2029 per DESC Third NEM Rider (Order 2026-248). May 2026 rate settlement: 7.6% increase ($12/mo on average bill) effective July 2026. Hurricane Helene 2024 was DESC's largest restoration in company history.
Lead with: TOU peak avoidance + July 2026 rate increase + Helene resilience
Duke Carolinas SC
Duke Energy Carolinas SC · 18 Upstate counties (Greenville, Spartanburg, Anderson, York)
Schedule R-STOU (Solar Time-of-Use), eff Aug 1 2024 (PSCSC 2023-388-E). Basic Customer Charge $13.09/mo + $30 formal monthly minimum bill. Excess generation credits ~2.6–4¢/kWh vs ~14¢/kWh retail (~18–30% of retail). Cumulative ~$24/mo of rate increases stacked Aug 2024 → Aug 2026. Critical Peak Pricing up to 20 days/yr, 6–9pm M–F, day-ahead notice by 4pm.
Lead with: Sub-retail export gap + 4 stacked rate increases + Critical Peak exposure
Duke Progress SC
Duke Energy Progress SC · Pee Dee + NE SC (Sumter, Florence, Darlington)
Schedule R-STOU-69 (Solar Time-of-Use), eff Jan 1 2022 (PSCSC 2021-243-E). Basic Facilities Charge $14.63/mo + $30 formal monthly minimum bill. Same export-credit + Critical Peak structure as Duke Carolinas. Feb 2026 8% rate increase (~$11/mo). Helene 2024 hit DEP territory directly.
Lead with: Fresh Feb 2026 rate increase + same export gap as Duke Carolinas + Helene memory
Santee Cooper
Santee Cooper · Berkeley, Georgetown, Horry counties (state-owned, ~220K direct retail)
State-owned, governed by its own Board (not PSC-regulated). DEFAULT residential schedule is RG-25 (three-part rate, eff Apr 1 2025): $20/mo customer charge + $8.00/kW demand charge (max 60-min interval during Peak Demand Hours: 3-6pm Apr-Oct or 6-9am Nov-Mar) + energy charge $0.0792/kWh. RT-25 (TOU energy-only, $20 customer charge + $0.3380/$0.0792 on/off-peak) is voluntary opt-in. Sub-retail export credits ($0.0416 summer / $0.0384 non-summer ≈ 30% of retail). $5B Canadys gas plant. 2027/2028 increases proposed (4.7%/4.6% — Board vote Oct 30, 2026).
Lead with: Sub-retail export gap + Canadys $5B gas plant + Oct 2026 vote on 2027/2028 increases
Aiken / Other SC Coop
Aiken Electric Cooperative + 19 other SC distribution co-ops (~50% of SC by area, member-owned)
Aiken Electric Cooperative R-TOU schedule (eff Jan 1 2025): $1.35/day service charge (~$41/mo) + on-peak 24¢ summer / 20¢ winter, off-peak 6¢. Solar exports under Schedule DER Rider credited at 'Value of Renewable Generation' (avoided cost, well below retail). Aiken: 16.24¢/kWh average rate, $183.77 avg bill, 113-min average outage. Other SC co-ops have different mechanics — verify customer's specific co-op before quoting.
Lead with: Avoided-cost export gap + 113-min Aiken outage memory + 'verify your specific co-op' nudge