Solar panels in Delaware
What a residential solar system actually costs in Delaware in 2026 — plus incentives, payback, and how to pick a vetted installer.
The real cost of solar in Delaware
A typical 9 kW rooftop system in Delaware runs about $27,450 installed. The federal Residential Clean Energy Credit knocks 30% off — around $8,235 — bringing the net price to roughly $19,215.
Delaware adds its own incentive: Green Energy Program grant. Stack that on top of the federal credit.
What you'll produce — and save
- ~11,826 kWh/year from a 9 kW system at 4.5 peak sun hours.
- At 15.7¢/kWh that's $1,857/yr off your electric bill in year one.
- Estimated payback: 10.3 years.
- 25-year net savings (2.5% annual rate escalation): $44,216.
Estimates only. Actual production depends on roof orientation, shade, equipment and your utility's specific tariff.
Net metering in Delaware
Delaware operates under a full retail policy for residential solar exports. Every kWh you export offsets a kWh you consume at retail rates — the strongest policy for homeowner economics.
Top Delaware metros we cover
FAQ
How much do solar panels cost in Delaware?
A typical 9 kW residential system in Delaware costs about $27,450 before incentives, or roughly $3.05 per watt installed. After the 30% federal tax credit that drops to about $19,215.
Is solar worth it in Delaware?
With an average residential electricity rate of 15.7¢/kWh and 4.5 peak sun hours per day, a properly sized system typically pays for itself in about 10.3 years and saves roughly $44,216 over 25 years.
Does Delaware have net metering?
Delaware operates under a full retail policy for residential solar exports. Exact credit values vary by utility — always confirm with the specific utility serving your address.
What state incentives are available in Delaware?
State incentive: Green Energy Program grant. Property tax exemption: No. Sales tax exemption: No. The 30% federal Residential Clean Energy Credit also applies.
Get vetted Delaware installer quotes.
SolarPros only lists installers who pass our licensing, insurance and reputation checks. Free to request — no pressure.
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Sources: EIA average residential electricity rates, NREL PVWatts sun hour data, DSIRE state incentive database, LBNL "Tracking the Sun" installed-cost benchmarks. Figures are estimates for guidance only, not a binding quote.