Solar Quotes in Delaware
Green Energy Program grant (Delmarva Power customers only)
- For residential solar up to 50,000 watts, the grant is $0.80/watt, up to $10,000. The table lists no residential grant for PPA/lease systems. Source: DNREC, https://documents.dnrec.delaware.gov/energy/services/GreenEnergy/Documents/DPL/GEP-Incentives.pdf (effective July 1, 2026; accessed 2026-10-20)
- Total project cost has to be $6.00/watt or less, and the grant can't exceed 50% of project cost. You need a solar shade analysis with a TSRF of 70% or higher. Applications filed more than 12 months after installation aren't eligible. Date-sensitive: DNREC updates these rates. Source: same (accessed 2026-10-20)
Net metering (26 Del. C. § 1014)
- Excess kWh credits roll over to later billing periods. For residential customers, credits left at the end of an annualized billing period carry over to the next one. Source: https://delcode.delaware.gov/title26/c010/index.html (accessed 2026-10-20)
A note on the federal tax credit
The federal residential clean energy credit (25D) doesn't apply to expenditures made after December 31, 2025. The IRS treats an expenditure as made when installation is completed. Source: https://www.irs.gov/newsroom/faqs-for-modification-of-sections-25c-25d-25e-30c-30d-45l-45w-and-179d-under-public-law-119-21-139-stat-72-july-4-2025-commonly-known-as-the-one-big-beautiful-bill-obbb (accessed 2026-10-20). This page isn't tax advice.
Is solar worth it in Delaware?
It depends on your bill, roof and utility rules. Here is an estimate for a home with a $150 monthly electric bill and a south-facing, unshaded roof, before any incentives:
- Residential electricity averaged an estimated 17.86¢/kWh in Delaware (January–July 2026), below the U.S. average of 18.19¢ (19 of 51, highest first). Source: EIA Electric Power Monthly, Table 5.6.B (accessed 2026-10-20)
- Small rooftop systems in Delaware produced an estimated 1,484 kWh per kW of panels in 2024 (2024 small-scale solar generation divided by average 2023–2024 small-scale capacity). Source: EIA Electric Power Annual 2024, Tables 3.21 and 4.7.B (accessed 2026-10-20)
- Estimated system size: 5.1–6.9 kW, producing about 8,904 kWh a year (estimated).
- Estimated installed cost: $18,000–$31,200 before incentives, using $3.00–$5.20 per watt. Source: Lawrence Berkeley National Laboratory (2024 installed prices, 20th–80th percentile; accessed 2026-10-20)
- Estimated simple payback: 10–23 years. Savings depend on how your utility credits exported energy (see above).
Estimates only, based on public data and simple assumptions. Actual production, cost, and savings vary by home, utility, rate plan, and installer. Not a quote, and not a guarantee of savings. Ask your installer about any state, local, or utility incentives that apply. State and local programs: DSIRE.
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