Solar System Builder

A typical residential solar system costs $2.50-$3.50 per watt installed in 2026, depending on panel tier, inverter type, and state. A 10 kW system ranges from $25,000-$35,000 before any state incentives. There is no federal tax credit for cash/loan purchases since Section 25D expired December 31, 2025.

It depends on your roof and budget. For shaded or complex roofs, pair any panel with Enphase IQ8HC microinverters. For simple south-facing roofs on a budget, SolarEdge Home Hub with Silfab 440W panels offers the best value. For maximum production on a small roof, REC 460W or Maxeon 475W panels with Enphase micros.

Not necessarily. Batteries make sense if you experience frequent outages, want to participate in ConnectedSolutions demand response (MA, CT, RI, VT), or are on time-of-use rates. For most homeowners with reliable grid power and net metering, solar alone provides the best ROI.

Without the federal tax credit, payback periods range from 8-15 years depending on your state, utility rate, system size, and financing method. States with high electricity rates (MA, CT, NH) see faster payback. The Propel lease option (Section 48) can provide day-one savings with $0 down.

The System Builder provides estimates based on typical NuWatt pricing. Actual costs vary by site conditions (roof complexity, electrical upgrades needed, permit costs) and current market pricing. Request a free quote for exact pricing for your home.