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Solar Panels in Delaware: 2026 Cost, Incentives & Savings

Incentive snapshot: Delmarva Power's Delaware tariff sets the export credit, and Delaware-sited solar credits trade at a moving price this page does not quote. Not a promise you qualify.

Short answer

Delaware's 2025 EIA residential average was 17.15 cents per kWh. Our calculator uses that statewide figure, not a utility tariff. The rounded statewide sun resource we use elsewhere is 4.3 peak sun hours a day. City pages below name the usual utility.

National price range

Three published cases

An estimate for Delaware, not a local quote. Berkeley Lab medians for host-owned U.S. systems installed in 2025, shown on the 7.7 kW median size.

Cash
$3.00/W
$23,100
Subset classified as cash
Middle published case
$3.60/W
$27,720
All host-owned systems
Loan
$4.50/W
$34,650
Financed subset, before interest

Before incentives. A loan price here excludes interest. The federal residential credit under section 25D ended for systems placed in service after December 31, 2025. Berkeley Lab, U.S. Distributed Solar and Storage, August 2026 data update.

How to read Delaware

Delaware's 2025 EIA residential average was 17.15 cents per kWh. Delmarva Power serves most of the state. The resource is about 4.3 peak sun hours in our statewide table, a bit higher toward the beaches. The state is small enough that Wilmington, Newark, and Dover still differ by roof and by permit office.

Utilities

Delmarva Power is the investor-owned utility for the large majority of Delaware addresses. Municipal utilities serve some towns. A Maryland ZIP across the line can be Delmarva, BGE, or a cooperative. Do not cross the state line with the same incentive sheet.

Export credits and tariffs

Delaware has offered net metering for eligible customer-generators and has run solar renewable energy credit procurement through state programs associated with DNREC. Procurement prices and grant windows change. A closed round is not a current offer. We do not promise a credit payment or a grant. Check the current DNREC notice and the Delmarva tariff before a bid treats either as income. Sources: Delaware Public Service Commission and DNREC.

Climate and roofs

Coastal Sussex County sees more wind and salt than Newark. Snow is moderate and short-lived on a pitched roof. Humidity and summer cooling are the load. Tree cover in older New Castle County neighborhoods is the shade issue.

Cities

Wilmington
Delmarva Power in the state's largest city, with rowhouses and detached county roofs.
Newark
Northern Delaware on Delmarva, and a different Newark from New Jersey.
Dover
The capital, Delmarva Power, slightly more open than the Wilmington canopy.
Middletown
A fast-growing Delmarva suburb between Wilmington and Dover.
Georgetown
Sussex County, Delmarva, a bit more sun and more coastal weather than Newark.

Delaware questions

Is Delmarva the whole state?

It is the default for most addresses. Some towns have municipal electric service. Read the bill.

Are Delaware credits guaranteed?

No. Procurement programs and net metering have rules and calendars. This site does not decide eligibility.

American Solar Savings researches these numbers and can help you compare installers in our network. We do not install the system.

Sources

Figures on this site are cited so you can check them. They are not a quote for a house, and they go stale when the publisher updates them.

Installer reviews

Google reviews of Spartan Solar (SpartanX)

These are Google reviews of Spartan Solar, listed on Google as SpartanX. They are not reviews of American Solar Savings. We did not write them, edit them, or star them.

Google listing for SpartanX: 2699 Lee Rd #300, Winter Park, FL 32789. American Solar Savings does not publish a review profile of its own matching service.

Kaelum Flentroy
Google review
My experience with Spartan Solar has been outstanding. From the very beginning, everyone I worked with was professional, knowledgeable, and transparent. They took the time to explain the entire process and made sure I felt comfortable every step of the way. A special thank you to Aimin Mustafa, whose professionalism and positive presence made a great first impression. He was friendly, respectful, and made the experience enjoyable from the start. I also want to recognize Tore Grasso for his incredible knowledge, professionalism, and patience. He answered every question I had thoroughly and never made me feel rushed or pressured. It's clear he genuinely cares about educating customers and helping them make informed decisions. It's rare to find a company that combines excellent customer service with such a knowledgeable team. If you're considering solar, I highly recommend Spartan Solar. They have earned my trust, and I look forward to working with them throughout the installation process and beyond.
Frank Piscatello
Google review
Spartan employees were very knowledgeable and professional. They answered all my questions and addressed any concerns I had through the process. I would highly recommend Spartan Solar to anyone looking to add solar in their life.
John Johnson
Google review
I'd like to thank Scott Schwarz for taking the time to share Spartan X's personalized residential solar plan with my family and I last week. We were interested in learning more about the opportunity and he did a terrific job of explaining all the details. I really respect and appreciate Scott's courteous down to earth approach. He never made us feel pressured to make a decision right then and there. He was knowledgeable and very willing to listen to, and answer, questions. He's definitely a great Spartan X representative. Thanks again, Scott.

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