Battery Storage Cost in Rhode Island
Home battery prices, incentives, and solar+storage savings for Rhode Island homeowners in 2026.
Rhode Island Battery Storage Overview
The average cost of home battery storage in Rhode Island is $1177 per kWh of storage capacity. A typical 10 kWh system costs approximately $11,770 before incentives, or $8,239 after the 30% federal Investment Tax Credit (ITC).
Even with 3.8 average peak sun hours, Rhode Island homeowners can achieve 50-70% grid independence with a well-designed solar-plus-storage system. Battery storage maximizes the value of every kilowatt-hour generated by storing surplus solar for use when the sun isn't shining.
Popular Battery Systems in Rhode Island
| Battery System | Capacity | Power | Installed Cost | Warranty |
|---|---|---|---|---|
| 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 |
| Franklin WholHome | 13.6 kWh | 5 kW | $13,000 - $16,000 | 12 years |
Solar + Battery Storage in Rhode Island
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 18% savings vs solar alone
- 10+ hours backup power
- Rhode Island utilities offer time-of-use rate plans where peak electricity costs significantly more than off-peak. Battery storage allows homeowners to arbitrage this difference, potentially saving $30-$80/month on electricity bills.
Battery Storage FAQ - Rhode Island
The average cost of home battery storage in Rhode Island is $1177 per kWh. A typical 10 kWh system costs $11,770 before incentives, or $8,239 after the 30% federal tax credit.
Popular battery systems in Rhode Island include Generac PWRcell, Tesla Powerwall 3, Enphase IQ Battery 5P, Franklin WholHome. 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.
Rhode Island 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 Rhode Island can provide 10+ 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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