Delaware energy rebates and tax credits (2026)
Delaware homeowners installing solar, heat pumps, EVs, batteries, or geothermal in 2026 stack federal IRS credits with meaningful state-level programs and utility rebates from Delmarva Power and others. The federal 25D credit (30% uncapped on solar, batteries, geothermal) and 25C credit (30% up to $2,000/year on heat pumps) apply nationwide. Energize Delaware is the headline state-level program.
Delaware climate zone is 4A. Solar potential is rated high. Heat pump fit for the climate is excellent. Population is 1.0 million. Below: every technology stack mapped to Delaware-specific programs.
Federal credits are filed on IRS Form 5695 (25C, 25D), Form 8936 (30D, 25E), and Form 8911 (30C). Most homeowners stack at least two layers — federal plus state or utility — and many stack three. Delmarva Power customers in Delaware access the largest concentration of layered programs. The order of operations matters: utility rebates first, then state, then federal credits on the post-rebate basis. Income-qualified households below 150% Area Median Income may also access HEEHRA point-of-sale rebates up to $14,000 for electrification (heat pumps, induction stoves, panels) — administered through the Delaware state energy office.
Residential solar in Delaware qualifies for the federal 25D credit at 30% of total cost through 2032, then phasing down to 26% in 2033 and 22% in 2034. Heat pumps qualify under federal 25C at 30% up to $2,000 per year — and the cap resets each January, so spreading projects across two tax years effectively doubles the available federal credit. Electric vehicles purchased new from qualifying dealers receive up to $7,500 transferable to the dealer at point of sale (federal 30D), with state EV rebates layered on top in 24+ states.
Delaware at a glance
- Top utility
- Delmarva Power
- Climate zone
- 4A
- Solar potential
- High
- Heat pump fit
- Excellent
- Population
- 1.0M
Top federal credit pathways
Delaware rebates by technology
Solar Panels
30% of total system cost
National Solar guide →Heat Pumps
30% up to $2,000/year for heat pumps
National Heat Pump guide →Electric Vehicles
$7,500 (new) or $4,000 (used) at point of sale
National EV guide →Home Batteries
30% of total cost (3 kWh+ standalone since 2023)
National Battery guide →Geothermal Heat Pumps
30% of total system cost
National Geothermal guide →