Battery Storage Cost in Delaware
Home battery prices, incentives, and solar+storage savings for Delaware homeowners in 2026.
Delaware Battery Storage Overview
The average cost of home battery storage in Delaware is $1033 per kWh of storage capacity. A typical 10 kWh system costs approximately $10,330 before incentives, or $7,231 after the 30% federal Investment Tax Credit (ITC).
Delaware receives 4.2 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 Delaware
| Battery System | Capacity | Power | Installed Cost | Warranty |
|---|---|---|---|---|
| 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 |
| SolarEdge Home Battery | 9.7 kWh | 5 kW | $10,000 - $13,000 | 10 years |
Solar + Battery Storage in Delaware
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
- 6+ hours backup power
- While Delaware 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 - Delaware
The average cost of home battery storage in Delaware is $1033 per kWh. A typical 10 kWh system costs $10,330 before incentives, or $7,231 after the 30% federal tax credit.
Popular battery systems in Delaware include Tesla Powerwall 3, Enphase IQ Battery 5P, Franklin WholHome, SolarEdge Home Battery. 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.
Delaware 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 Delaware can provide 6+ 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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