Loading NuWatt Energy...
We use your location to provide localized solar offers and incentives.
We serve MA, NH, CT, RI, ME, VT, NJ, PA, and TX
Loading NuWatt Energy...
NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteBackup power, peak shaving, and solar storage — our top 5 picks
Home battery storage has become essential for grid independence, peak rate savings, and solar energy optimization. In 2026, the residential ITC (Section 25D) has expired, but third-party owned batteries through lease/PPA arrangements may still qualify for 30% under Section 48/48E. Programs like ConnectedSolutions in New England pay $275/kW/year for demand response participation, making batteries a revenue-generating asset.
Ranked by performance, value, and suitability for Nationwide. All products are installed and serviced by NuWatt Energy.
Highest continuous power output (11.5 kW) of any residential battery. Built-in inverter simplifies installation. 185 LRA motor start capability handles well pumps and AC compressors during outages. The most installed home battery in the US.
Best for homeowners who want to start small and expand later. Stack up to 16 units for 80 kWh total. 15-year warranty is the longest available. 96% round-trip efficiency is the highest in class. Integrates seamlessly with Enphase microinverters.
Largest single-unit capacity at 15 kWh. IP67 waterproof rating allows outdoor installation without shelter. Built-in generator integration for unlimited backup. Best choice for large homes needing whole-home backup.
New for 2025-2026, the 10C doubles the 5P's capacity in a single unit. 15-year warranty, compact form factor, and Enphase ecosystem integration. Great middle ground between the 5P and full Powerwall.
Capacity (kWh) = how long your backup lasts. Power (kW) = how many appliances you can run simultaneously. A 13.5 kWh battery with 11.5 kW power (Powerwall 3) can run more appliances but for less time than a 15 kWh battery with 5 kW power.
In MA, CT, RI, and NH, enrolled batteries earn $275/kW/year through demand response. A 13.5 kWh Powerwall 3 earns ~$1,100-$1,500/year. Over 10 years, that's $11,000-$15,000 in passive income.
Section 25D expired. Homeowners purchasing batteries directly receive $0 federal credit. However, lease/PPA arrangements may still qualify for 30% under Section 48/48E through the third-party owner.
Batteries paired with solar can recharge daily for indefinite backup. Standalone batteries provide only 6-24 hours of backup. Always pair battery with solar for maximum value.
NuWatt's energy consultants help you pick the right batteries for your home, budget, and goals. Free consultation, no pressure.