Solar Panel Cost in Wilmington, DE
Updated 2026 guide to solar panel prices, savings, and payback period in Wilmington.
Estimated Solar Savings
Solar Panel System Costs in Wilmington, DE
Below are estimated costs for different solar panel system sizes in Wilmington, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $11,800 | -$3,540 | $8,260 | 6,132 kWh |
| 6 kWMost Popular | $17,700 | -$5,310 | $12,390 | 9,198 kWh |
| 8 kW | $23,600 | -$7,080 | $16,520 | 12,264 kWh |
| 10 kW | $29,500 | -$8,850 | $20,650 | 15,330 kWh |
| 12 kW | $35,400 | -$10,620 | $24,780 | 18,396 kWh |
What Affects Solar Panel Cost in Wilmington?
The average cost of solar panels in Wilmington, DE is approximately $295/watt before incentives. For a typical 6kW residential system, that means a total cost of about $17,700 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $12,390.Wilmington homeowners typically see a payback period of 8 years and save an estimated $30,000 over 25 years.
Factors that affect your cost in Wilmington:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary within the Wilmington metro area
- Local permits: Permitting costs and requirements vary by municipality in Wilmington
- Incentives: State and local programs can significantly reduce your out-of-pocket cost
Solar Incentives Available in Wilmington
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
Delaware homeowners benefit from the 30% federal solar tax credit, which can be combined with state programs for additional savings.
State & Local Incentives
Green Energy Program Grant
RebateThe Delaware Green Energy Program provides rebates for residential solar installations.
Solar Renewable Energy Credits
SRECDelaware homeowners can earn and sell SRECs generated by their solar systems.
Net Metering
Delaware offers net metering for systems up to 25 kW, with excess generation credited at the full retail rate.
AvailableSRECs
Delaware has an SREC market as part of its Renewable Portfolio Standard. Solar system owners can sell SRECs to utilities that need to meet their solar requirements.
Est. Value: $20-$40 per SREC
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Top Solar Companies in Wilmington, DE
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Solar Panel Cost FAQ - Wilmington, DE
The average cost of solar panels in Wilmington is approximately $2.95 per watt before incentives. A typical 6kW residential system costs about $17,700 before the 30% federal tax credit, bringing the net cost to around $12,390.
The typical payback period for solar panels in Wilmington is approximately 8 years. After that, you'll enjoy free electricity for the remaining 15-20+ years of your system's life, saving an estimated $30,000 over 25 years.
Wilmington homeowners can take advantage of the 30% federal solar tax credit, which reduces your system cost by 30%. Delaware also offers net metering, SRECs, and various state-level incentive programs. Check our incentives page for the complete list.
Wilmington homeowners can save an estimated $30,000 over 25 years by going solar. Actual savings depend on your electricity usage, system size, roof orientation, and available incentives. With electricity rates averaging $0.14/kWh in Delaware, solar provides significant long-term savings.
Solar Costs in Other Delaware Cities
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