Delaware Solar Guide 2026

Delaware offers moderate solar economics with Delmarva Power's service area and decent electricity rates supporting solar adoption.

Updated March 2026 · Sources: DE DNREC, DSIRE, EnergySage, NREL · Research by Dana Mercer
#35 solar state Moderate conditions
Avg install cost $2.95/W Before incentives · Q1 2026 · EnergySage
Electricity rate 14¢/kWh Statewide avg · EIA Jan 2026
Peak sun hrs/day 4.2 hrs State avg · NREL data
Typical payback 9-11 yrs After federal ITC
Solar rank #35 Installed capacity · SEIA 2025

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Delaware provides solid solar fundamentals: With 14¢/kWh electricity rates and 4.2 daily peak sun hours, the First State offers reasonable conditions for solar adoption. Delmarva Power serves most residential customers.

For Wilmington and Dover area residents, solar systems typically pay for themselves in 9-11 years, helped by decent electricity rates and moderate installation costs.

Delaware solar incentives (2026)

Incentive Amount Status
Federal ITC 30% of system cost Active
Delmarva Power Net Metering Full retail credit Active
Property Tax Exemption Not available None
Green Energy Program SREC market Limited

Delaware solar install costs (Q1 2026)

System size Gross cost After ITC Annual savings Payback
6 kW $17,700 $12,390 ~$1,300/yr ~9.5 years
8 kW $23,600 $16,520 ~$1,730/yr ~9.5 years

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