Quick Answer
Delaware's 2026 solar incentives include Green Energy Program rebates up to $6,000 for Delmarva Power customers, SREC procurement contracts worth roughly $30 per SREC for the first 10 years, full retail-rate net metering for systems up to 25 kW, no statewide sales tax, and a Low- to Moderate-Income Solar Pilot Program. The federal residential tax credit expired in 2025.
Delaware homeowners paid an average residential electricity rate of about 18.79 cents per kWh in April 2026, according to the U.S. Energy Information Administration (2026). That is above the national average and rising. The state had roughly 325 MWdc of installed solar capacity by early 2026, ranking 47th nationally, according to SEIA’s Delaware state solar overview (2026). Solar supplied about 7.95% of the state’s electricity.
The financial case for solar in Delaware in 2026 rests on a stack of utility-specific rebates, competitive SREC procurement, and unusually strong net metering. Unlike Maryland or New Jersey, Delaware does not offer a single statewide program. Your utility determines your rebate and whether you can sell SRECs. This guide covers every active 2026 incentive, the real dollar value, and how payback changes by utility territory. For the national picture, see our solar incentives in USA 2026 guide and state solar incentives in the US overview. SurgePV’s solar design software and generation and financial tool let installers model rebates, SREC income, and net metering in one place. Build accurate, territory-specific proposals. Generate professional solar proposals in minutes, then book a demo.
Quick Answer
Delaware’s 2026 solar incentives include Green Energy Program rebates up to $6,000 for Delmarva Power customers, SREC procurement contracts worth roughly $30 per SREC for the first 10 years, full retail-rate net metering for systems up to 25 kW, no statewide sales tax, and a Low- to Moderate-Income Solar Pilot Program. The federal residential tax credit expired in 2025.
In this guide:
- Latest 2026 status of every active Delaware solar incentive
- How the federal ITC expiration changes the math
- Green Energy Program rebates by utility, including SREC assignment rules
- How Delaware SREC procurement works and what it pays
- Net metering rules, capacity limits, and the 110% sizing cap
- Sales tax, property tax, and structural cost advantages
- Cost, ROI, and payback scenarios by utility territory
- Common mistakes and how to avoid them
Delaware Solar Incentives at a Glance — 2026
Delaware’s incentive stack is fragmented but valuable. The largest upfront benefit is the Green Energy Program rebate, which varies by utility. Ongoing value comes from SREC procurement for systems that do not take the Delmarva rebate, and from full retail net metering for all customer-owned systems.
| Incentive | Type | 2026 Status | Typical Value |
|---|---|---|---|
| Federal residential ITC | Tax credit | Expired | $0 for cash or loan residential purchases |
| Federal Section 48E | Commercial tax credit | Active, deadlines apply | 30% for eligible commercial, lease, or PPA systems |
| Green Energy Program — Delmarva | Utility rebate | Active | ~$0.70/W, max $6,000; SRECs assigned to SEU |
| Green Energy Program — Newark | Municipal rebate | Active | $1.00/W up to 5 kW, then $0.50/W; SRECs retained |
| Green Energy Program — DEC | Co-op rebate | Active | ~$0.50/W first 5 kW, then $0.20/W |
| SREC Delaware procurement | Performance credit | Active, competitive | ~$30/SREC years 1-10, $10/SREC years 11-25 |
| Net metering | Bill credit | Active | 1:1 retail credit; residential up to 25 kW |
| Sales tax exemption | Tax exemption | Not applicable | Delaware has no state sales tax |
| Property tax exemption | Tax exemption | Not available statewide | Most local assessors do not reassess for solar |
| LMI Solar Pilot Program | Income-based grant | Active | Free 4 kW for WAP-eligible; 70% off up to 6 kW up to AMI |
| Battery incentives | State rebate | Not available | No state-specific battery incentive |
Delaware’s renewable portfolio standard requires 25% renewable electricity by 2026, with a 3.5% solar carve-out, according to DSIRE’s SREC Procurement Program summary (2026). That carve-out creates the demand behind both the SREC procurement and the Green Energy Program.
Key Takeaway
Delaware solar works in 2026, but the math is utility-specific. Delmarva Power customers get the largest rebate but must give up SREC income. Municipal and co-op customers get smaller rebates but can often keep and sell their SRECs. Net metering is the universal benefit.
The Federal ITC Is Gone for Homeowners. What Still Works?
The 30% federal Residential Clean Energy Credit under Internal Revenue Code Section 25D expired on December 31, 2025. Homeowners who buy solar with cash or a loan in 2026 cannot claim it. This is the single largest change in Delaware’s solar math.
Commercial, third-party-owned, and leased systems may still access the federal Investment Tax Credit under Section 48E. The usual safe-harbor rules apply. Construction must begin before July 4, 2026, or the system must be placed in service by December 31, 2027. Lease and power-purchase-agreement providers can pass a portion of that credit through as lower monthly payments. That makes third-party ownership more attractive in Delaware now than it was when the residential ITC was available.
For cash and loan buyers, the federal credit is gone. The rest of the stack must carry the project. Every installer proposal in Delaware should lead with the Green Energy Program rebate, net metering, and SREC income where available. It should not lead with a federal tax credit that no longer exists.
Delaware Green Energy Program Rebates by Utility
The Green Energy Program is Delaware’s primary solar rebate mechanism. It is funded through utility public benefits charges and administered by participating utilities rather than the state directly. There is no single “Delaware solar rebate.” The amount you receive depends entirely on which utility sends your electric bill.
Delmarva Power
Delmarva Power serves the largest share of Delaware’s population and offers the most generous rebate. Residential customers receive approximately $0.70 per watt of installed solar capacity, with a maximum rebate of $6,000. Reaching the maximum typically requires a system of about 8.5 kW or larger.
Delmarva Power customers must assign their Solar Renewable Energy Credits to the Delaware Sustainable Energy Utility as a condition of accepting the rebate. This requirement is documented by the Delaware Department of Natural Resources and Environmental Control (2026). The rebate is the upfront benefit. The SRECs become the SEU’s compensation for funding the rebate.
Funding comes from a public benefits charge of $0.000356 per kWh collected from Delmarva Power customers each month. Rebates are awarded on a first-come, first-served basis until annual funds are exhausted. DNREC notes that high demand has caused payment delays for some approved grants, so installers should set realistic customer expectations on timing.
Newark Municipal Electric
Customers of the City of Newark Electric Department receive one of the stronger municipal rebates. The program pays $1.00 per watt for the first 5 kW and $0.50 per watt for additional capacity, according to EnergySage’s Delaware solar incentives guide (2026). Newark customers typically retain ownership of their SRECs, so they can also participate in the SREC Delaware procurement.
Delaware Electric Cooperative
DEC members receive a smaller per-watt rebate. Common figures are roughly $0.50 per watt for the first 5 kW and $0.20 per watt for additional capacity. The maximum rebate is lower than Delmarva’s. DEC members generally retain the option to sell their SRECs, but specific terms can vary, so confirm directly with the cooperative before quoting.
DEMEC Municipal Utilities With No Rebate
Customers of several municipal utilities are not eligible for Green Energy Program rebates at all. These include Dover, New Castle, Clayton, Lewes, Middletown, Milford, Smyrna, and Seaford, according to EnergySage. For these homeowners, the incentive case rests on net metering and SREC procurement alone.
Low- to Moderate-Income Enhanced Rebates
Delaware operates a separate Low- to Moderate-Income Solar Pilot Program administered by DNREC. Homeowners who meet Weatherization Assistance Program income guidelines may qualify for no-cost solar installations up to 4 kW. Households earning up to their county’s area median income may qualify for substantial cost coverage. This includes 70% off systems up to 6 kW, according to SolarReviews’ Delaware solar incentives guide (2026). Income limits for a family of four vary by county, roughly $72,000 to $92,000.
Delaware SREC Procurement
Delaware’s SREC market works differently from Pennsylvania’s open trading market or New Jersey’s fixed-price Administratively Determined Incentive. It uses a competitive annual procurement administered by the Sustainable Energy Utility for Delmarva Power.
How the Procurement Works
Each year, the SREC Delaware program opens for bids during a two-week window. Solar system owners submit bids for the price they would accept per SREC. The program accepts the lowest valid bids in each tier until the tier is filled. Successful bidders receive long-term contracts, according to SREC Delaware (2026).
Pricing Structure
For Tier 1 and Tier 2 bids, the contract pays the bid price for each SREC produced in years 1 through 10. Years 11 through 25 pay a flat administrative price of $10 per SREC. Recent procurement results have placed weighted average prices around $32.69 per SREC, according to DSIRE (2026). Individual bids may clear higher or lower depending on the year and competition.
Production and Value
A typical residential solar system in Delaware generates approximately 1.35 SRECs per installed kilowatt per year. An 8 kW system producing about 10.8 SRECs annually at $30 per SREC earns about $324 per year for the first 10 years. Over 25 years, total SREC income can exceed $4,500.
The SREC-Rebate Tradeoff
This is the most important nuance. If you accept the Delmarva Power Green Energy Program rebate, you assign your SRECs to the SEU and cannot participate in the SREC Delaware procurement. You generally choose one or the other. For homeowners who do not take the rebate, the SREC procurement is worth pursuing. For homeowners who take the rebate, the SRECs are part of what funds the rebate program.
Net Metering Rules in Delaware
Net metering is the most financially significant ongoing solar benefit for most Delaware homeowners. The rules are consistent across utilities but have important sizing and true-up constraints.
How Net Metering Works
Exported solar kilowatt-hours earn a credit equal to the full retail electricity rate. The customer pays only the net difference between imports and exports. Credits are tracked in kilowatt-hours rather than dollars and roll over month to month. At the end of each 12-month period, any remaining surplus credits can be paid out by check at the full retail rate, according to SolarReviews (2026).
Key Rules
- Residential system cap: 25 kW.
- System size limit: generally cannot exceed 110% of the customer’s prior 12 months of electricity usage.
- True-up month: customers can select their own 12-month true-up period. March or April is common because winter heating loads are past and summer cooling loads have not yet peaked.
- Fixed charges: monthly customer charges and fixed distribution fees cannot be offset by kWh credits.
Future Policy Risk
Delaware is actively evaluating its net metering policies. Senate Joint Resolution No. 1, passed in January 2025, required all electric utilities offering net metering to participate in a cost-benefit study. The results could lead to changes in net metering credits, according to EnergySage (2026). Any homeowner considering solar should lock in current terms by applying for interconnection sooner rather than later.
Design Implication
The 110% usage cap and annual true-up mean the conservative design rule is to size for roughly 90-100% of annual consumption. Treat exports as a bonus, not a primary revenue source.
Sales Tax, Property Tax, and Structural Advantages
Delaware offers a few structural advantages. They are not solar incentives in the formal sense, but they still improve project economics.
No Statewide Sales Tax
Delaware has no state sales tax. Solar equipment and installation labor are not taxed at the state level. This is a real cost advantage compared with Pennsylvania, where solar equipment is subject to 6% state sales tax plus local tax. On a $25,000 system, Delaware’s lack of sales tax saves roughly $1,500 to $2,000 versus a taxed state.
Property Tax Treatment
Delaware does not have a statewide statutory property tax exemption for solar installations. In practice, most local jurisdictions do not increase property tax assessments to reflect the added value of a solar system. This treatment is generally favorable, but it is not guaranteed. Homeowners with questions should check with their county tax assessor.
Solar Access Protection
Delaware Code Title 25, Section 318 protects the right to install solar against homeowners association interference. Any covenant that effectively prohibits or unreasonably restricts solar installations is void and unenforceable. The law also provides for attorney fees to the prevailing party in solar access litigation.
Cost, ROI, and Payback Scenarios by Utility
The following examples use illustrative 2026 costs and incentive values. Actual figures depend on location, utility, roof conditions, installer quote, and whether the homeowner qualifies for income-limited programs. The scenarios assume a 25-year system life, 3% annual electricity escalation, and a $30 SREC price where SRECs are retained.
Scenario 1 — 8 kW Residential, Delmarva Power, Green Energy Rebate
| Item | Amount |
|---|---|
| Gross installed cost ($2.75/W) | $22,000 |
| Green Energy Program rebate | -$6,000 |
| Net cost | $16,000 |
| Annual bill savings (~10 MWh at 18¢/kWh) | $1,800 |
| Annual SREC income | $0 (assigned to SEU) |
| Payback | 8.9 years |
Scenario 2 — 7 kW Residential, Newark Municipal, No Rebate Retains SRECs
| Item | Amount |
|---|---|
| Gross installed cost ($2.80/W) | $19,600 |
| Green Energy Program rebate | -$5,250 |
| Net cost | $14,350 |
| Annual bill savings (~8.8 MWh at 17¢/kWh) | $1,496 |
| Annual SREC income (~9.5 SRECs at $30) | $285 |
| Payback | 7.4 years |
Scenario 3 — 150 kW Commercial Rooftop, Delmarva Territory
| Item | Amount |
|---|---|
| Gross installed cost ($2.45/W) | $367,500 |
| Section 48E tax credit (if eligible) | -$110,250 |
| Annual bill savings and demand reduction | $42,000 |
| Annual SREC income (~180 SRECs at $30) | $5,400 |
| Payback | 5.5 years |
Commercial projects can still access the federal Section 48E credit. For larger systems, load profiling and shadow analysis matter more than simple bill offset.
Common Mistakes and Misconceptions
Delaware’s utility-specific incentive structure means mistakes are easy to make and costly to fix.
Quoting the Expired Federal ITC
The most expensive error is telling a homeowner they can claim the 30% federal tax credit on a cash or loan purchase. Section 25D ended on December 31, 2025. Only commercial, lease, or PPA structures can still access federal credits.
Double-Counting SRECs and the Delmarva Rebate
Do not promise SREC income to a Delmarva Power customer who is taking the Green Energy Program rebate. The SREC assignment to the SEU is a condition of the rebate. The homeowner gets one or the other, not both.
Oversizing for Export
Delaware caps net-metered systems at 110% of prior 12-month usage. Annual surplus credits reset at the true-up month unless the customer requests a payout. A system sized to 120% of usage may not even be approved. Size for what the household uses.
Ignoring Utility Territory
A homeowner in Newark can receive a different rebate and retain SRECs. A homeowner in Dover may receive no rebate at all. Always identify the utility before building a proposal.
Missing the SREC Bid Window
SREC Delaware accepts bids only during a two-week annual window. If the installer or homeowner misses it, a year of potential SREC income can be lost. Subscribe to program email updates or calendar the window.
Forgetting the True-Up Selection
Customers can choose their true-up month once. Picking a month that does not match the household’s usage pattern can leave credits stranded. March or April works for most homes.
Conclusion
Delaware’s solar incentive stack in 2026 is fragmented but still strong. The federal residential tax credit is gone. The value now comes from utility-specific Green Energy Program rebates and competitive SREC procurement for systems that do not take the Delmarva rebate. Full retail net metering and no state sales tax add further value. The Low- to Moderate-Income Solar Pilot Program also makes solar accessible for income-eligible households.
For solar professionals, the competitive edge is the ability to model each utility territory correctly. The winning Delaware proposal shows the homeowner exactly how the rebate, SRECs, net metering, and local rates interact over 25 years.
Tools like SurgePV’s solar design software and generation and financial tool let you build Delaware-specific proposals. They reflect real utility rates, SREC income, and net metering rules. For installers scaling in the state, our guide for solar installers covers proposal automation and compliance workflows.
Three actions to take now:
- Confirm the utility and rebate structure before quoting — Delmarva, DEC, Newark, and DEMEC customers have different rules.
- Lock in net metering terms early — the 2025 cost-benefit study could lead to policy changes.
- Size for self-consumption — the 110% usage cap and annual true-up make exports a bonus, not a strategy.
For the national picture, see our solar incentives in USA 2026 guide and state solar incentives in the US overview, both linked earlier in this guide.
Frequently Asked Questions
What solar incentives are available in Delaware in 2026?
Delaware’s 2026 solar incentives include Green Energy Program rebates up to $6,000 for Delmarva Power customers, SREC procurement contracts worth roughly $30 per SREC for the first 10 years, full retail-rate net metering for residential systems up to 25 kW, no statewide sales tax, and the Low- to Moderate-Income Solar Pilot Program. The federal residential tax credit expired in 2025.
Does Delaware have a state solar tax credit in 2026?
No. Delaware does not offer a state income tax credit for residential solar in 2026. The main financial incentives are utility-administered Green Energy Program grants, SREC procurement income, and full retail net metering. There is also no statewide sales tax, which reduces the upfront cost of equipment.
Is the federal solar tax credit still available in Delaware in 2026?
No. The 30% federal Residential Clean Energy Credit under Internal Revenue Code Section 25D expired for homeowner-owned systems placed in service after December 31, 2025. Commercial, third-party-owned, and leased systems may still qualify under Section 48E. Construction must begin before July 4, 2026, or the system must be placed in service by December 31, 2027.
How much is the Delmarva Power solar rebate?
Delmarva Power offers approximately $0.70 per watt of installed solar capacity through the Delaware Green Energy Program, with a maximum rebate of $6,000 for residential systems. Reaching the maximum typically requires a system of about 8.5 kW or larger. As a condition of receiving the rebate, homeowners must assign their Solar Renewable Energy Credits to the Delaware Sustainable Energy Utility.
How do Delaware SRECs work?
Delaware operates an SREC procurement program administered through SREC Delaware. Solar system owners submit bids during an annual two-week window and, if accepted, receive 25-year contracts. Recent prices have averaged roughly $30 per SREC for the first 10 years and $10 per SREC for years 11 through 25. Delmarva Power customers who accept the Green Energy Program rebate cannot also participate in the SREC procurement because their SRECs are assigned to the SEU.
How does net metering work in Delaware in 2026?
Delaware requires utilities to credit excess solar generation at the full retail rate. Credits are tracked in kilowatt-hours and roll over month to month. Residential systems are eligible up to 25 kW and cannot be sized to produce more than 110% of the customer’s prior 12 months of usage. At annual true-up, customers may request a payout for remaining credits at the full retail rate.
Does Delaware have a sales tax exemption for solar panels?
Delaware has no statewide sales tax, so solar equipment and installation labor are not subject to a state sales tax. This is a structural cost advantage rather than a solar-specific exemption. Neighboring Pennsylvania charges 6% state sales tax plus local tax on solar equipment.
Does Delaware have a property tax exemption for solar panels?
No. Delaware does not have a statewide statutory property tax exemption for solar installations. In practice, most local jurisdictions do not increase property tax assessments to reflect the added value of a solar system. This treatment is not guaranteed by state law. Homeowners should check with their county tax assessor.
What is the typical solar payback period in Delaware in 2026?
Payback periods for well-designed residential solar systems in Delaware typically range from 7 to 11 years in 2026. The exact result depends on utility territory, system size, roof conditions, and incentive stacking. Delmarva Power customers who qualify for the full $6,000 rebate generally see the shortest paybacks. Systems without the rebate or in lower-rate territories may take longer.
What is the most common mistake when sizing a solar system in Delaware?
The most common mistake is oversizing for export. Delaware caps net-metered systems at 110% of prior 12-month usage, and annual surplus credits reset at the chosen true-up month unless the customer requests a payout. A system sized to maximize self-consumption rather than exports usually delivers the best value.
