Solar Panel Cost in Delaware (2026)
Installed solar in Delaware runs about $2.80 per watt — roughly 9% above the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.15/kWh power price and 4.5 daily peak sun hours.
Worked example: a typical $150/month home in Delaware
A $150/month electric bill in Delaware works out to about 12,000 kWh a year. Sizing a cash-purchase system to cover 100% of that:
System size
9.2 kW
Panels
23
Annual offset
101%
Gross cost
$28,260
Federal credit (25D)
$0
Expired 12/31/2025 — $0
State incentive
$0
Net cost
$28,260
Payback
13.0 yr
25-year savings
$37,701
Last updated June 30, 2026
Delaware solar numbers
- Installed price
- $2.80 / watt
- Electricity price
- $0.15 / kWh
- Peak sun hours
- 4.5 hrs/day
- State incentive
- 0%
- Net-metering value
- 100% of retail
Local context: SREC sales add a modest revenue stream on top of net metering in Delaware.
Estimate your own Delaware system
Adjust the bill, ownership, and battery options below — it's pre-set to Delaware's pricing and sun hours.
Estimated system cost
$33,356–$43,324
12.8 kW32 panels
Low $33kMost likely ~$38,340High $43k
Federal tax credit
— expired Dec 2025, we won't pretend otherwise
$0
State & utility incentives
$0
Est. annual savings
$2,523
Payback period
~12.7 yr
Net cost
$33k–$43k
25-year net savings
+$53,431
iA ballpark estimate for planning — not a final quote.
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