Battery Storage Cost in South Carolina
Home battery prices, incentives, and solar+storage savings for South Carolina homeowners in 2026.
South Carolina Battery Storage Overview
The average cost of home battery storage in South Carolina is $1042 per kWh of storage capacity. A typical 10 kWh system costs approximately $10,420 before incentives, or $7,294 after the 30% federal Investment Tax Credit (ITC).
South Carolina receives 4.8 average peak sun hours daily, enabling solar-plus-storage homeowners to achieve 60-80% grid independence. Battery storage captures daytime solar overproduction for use during evening peak hours, reducing grid dependence year-round.
Popular Battery Systems in South Carolina
| Battery System | Capacity | Power | Installed Cost | Warranty |
|---|---|---|---|---|
| SolarEdge Home Battery | 9.7 kWh | 5 kW | $10,000 - $13,000 | 10 years |
| Generac PWRcell | 18 kWh | 4.5 kW | $12,000 - $20,000 | 10 years |
| Tesla Powerwall 3 | 13.5 kWh | 11.5 kW | $12,000 - $14,500 | 10 years |
| Enphase IQ Battery 5P | 5 kWh | 3.84 kW | $6,000 - $8,000 | 15 years |
Solar + Battery Storage in South Carolina
Solar Only
- Export excess to grid during the day
- Buy power from grid at night
- No backup during outages
- Savings depend on net metering rates
Solar + Battery
- Store excess solar for nighttime use
- Additional 13% savings vs solar alone
- 9+ hours backup power
- While South Carolina has relatively moderate electricity rates, battery storage still provides peak shaving value of $15-$40/month for homeowners on time-of-use plans, plus the added benefit of backup power during outages.
Battery Storage FAQ - South Carolina
The average cost of home battery storage in South Carolina is $1042 per kWh. A typical 10 kWh system costs $10,420 before incentives, or $7,294 after the 30% federal tax credit.
Popular battery systems in South Carolina include SolarEdge Home Battery, Generac PWRcell, Tesla Powerwall 3, Enphase IQ Battery 5P. The best choice depends on your backup needs, budget, and whether you have existing solar panels. The Tesla Powerwall 3 is the most popular choice nationally due to its high power output and competitive pricing.
South Carolina does not currently have a dedicated state battery incentive program, but the 30% federal Investment Tax Credit applies to all battery installations with 3+ kWh capacity, reducing your cost by nearly a third.
A typical home battery in South Carolina can provide 9+ hours of backup power for essential loads like lights, refrigerator, WiFi, and phone charging. For whole-home backup during extended outages, you may need multiple batteries or a larger system like the Generac PWRcell.
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