Is solar worth it in Delaware?
At Delaware’s average rate of 17.6¢/kWh and about 1300 kWh per kW of panels a year, a typical home pays back its system in roughly 11.8 years on electricity savings alone — no federal credit, which ended for buyers at the end of 2025 — then keeps saving. Run your own numbers below.
Sources: EIA · NREL · IRS. No federal credit — it ended 31 Dec 2025.
Independent estimate for guidance only — not a quote or advice. Retail net metering plus SREC income on some utilities.
What drives solar payback in Delaware
Delaware homeowners pay about 17.6¢/kWh, which is 0.8¢ below the national average. A rooftop here generates roughly 1300 kWh per kW each year — about the typical US figure. On exports, Delaware offers full retail net metering: Retail net metering plus SREC income on some utilities.
Delaware electricity price trend
Average residential rate, monthly, May 2023 – Apr 2026. Up 13% over the period.
Source: U.S. Energy Information Administration (EIA), Electric Power Monthly · range 15.09–18.81¢/kWh
A worked example
For a Delaware home with a $154/month power bill (typical household usage at Delaware’s rate):
That nets out to a payback of about 11.8 years — shorter than simply dividing net cost by year-one savings, because power prices climb ~2.5%/yr so your savings grow each year. Assumes 3.00 $/W installed before incentives and a typical 40% self-consumption; your actual cost, roof and usage will differ — adjust the calculator above.
Who supplies your power in Delaware
Most Delaware homes are served by Delmarva Power, the investor-owned utility (a subsidiary of Exelon) that covers the bulk of the state. Rural and southern areas are largely served by the Delaware Electric Cooperative, a member-owned co-op. A handful of towns run their own municipal systems through the Delaware Municipal Electric Corporation (DEMEC) — including Dover, Newark, Milford, Lewes, Seaford, New Castle and others. Your net-metering terms, SREC access and rebate options depend on which of these three groups you fall under, so it is worth confirming your provider before you model payback — the co-op and the munis run their own programmes rather than Delmarva's.
What you’re paid for what you export
Delaware's meter still effectively runs both ways — one of the more favourable set-ups left. Exports are credited at the same retail rate you pay for imports, surplus rolls forward month to month, and residential systems qualify up to 25 kW, far more headroom than a normal home needs. One caveat: whatever credit remains at the annual true-up is typically cashed out at a lower avoided-cost rate, not retail, so aim to match the array to your yearly consumption rather than deliberately overbuild. That retail crediting — the polar opposite of California's NEM 3.0 — is the single biggest lever on a Delaware payback, and it keeps the grid behaving close to a free battery.
Delaware incentives & taxes in 2026
Three state-level pieces matter here. The Green Energy Program pays up-front rebates or grants for residential solar, but it's administered separately by Delmarva Power, the Delaware Electric Cooperative and DEMEC, so the amount and rules follow your utility. Delaware also runs a live SREC market — Delmarva procures SRECs through long-term contracts — giving owners a second income stream on top of net metering. And Delaware charges no state sales tax at all, so that's one cost other states carry that you simply don't. Rebate levels and SREC prices both move around; confirm current figures with your utility before committing.
The 30% federal credit ended on 31 December 2025 and can now only reach a homeowner indirectly through a lease or PPA. Check the current state and utility programs on DSIRE’s Delaware list, then type any incentive into the calculator above to see how it shortens your payback.
What solar costs in Delaware
Budget low-to-mid $20,000s for a 7–8 kW Delaware system before any rebate or SREC income — installers here quote roughly $2.90–$3.40 per watt, right in the national mainstream, with smaller or more complex roofs at the top of that band. The spread between quotes in this market is genuinely wide, so collecting at least three is worth the hassle: the sticker price is doing more of the work than it used to.
The honest verdict for Delaware
Delaware sits in the middling-to-good tier for 2026. There's no headline payment like New Jersey's SuSI, but retail-rate exports, a working SREC market, the Green Energy Program rebate and zero state sales tax add up to a respectable stack. On power at around 17.5 cents/kWh and production of 1,300 kWh per kW each year, a 9–13 year payback is a fair expectation — the exact figure depends on your utility, your rebate and what SRECs fetch. Not the slam-dunk it once was, but an owned system sized to your own use still pencils out for plenty of Delaware homes.
Sources for this page
Driving electric — or heating electric — in Delaware?
Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the Delaware EV charging cost and the Delaware heat pump vs gas comparison.