Is solar worth it in Maine?
At Maine’s average rate of 28.7¢/kWh and about 1250 kWh per kW of panels a year, a typical home pays back its system in roughly 7.8 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. High prices plus retail net metering give surprisingly strong payback for a northern state.
What drives solar payback in Maine
Maine homeowners pay about 28.7¢/kWh, which is 10.3¢ above the national average. A rooftop here generates roughly 1250 kWh per kW each year — below the typical US figure. On exports, Maine offers full retail net metering: High prices plus retail net metering give surprisingly strong payback for a northern state.
Maine electricity price trend
Average residential rate, monthly, May 2023 – Apr 2026. Down 3% over the period.
Source: U.S. Energy Information Administration (EIA), Electric Power Monthly · range 20.94–32.17¢/kWh
A worked example
For a Maine home with a $251/month power bill (typical household usage at Maine’s rate):
That nets out to a payback of about 7.8 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 Maine
Maine has two investor-owned utilities that deliver power to the vast majority of homes: Central Maine Power (CMP) in the south and west, and Versant Power in the north and east. Both operate under the same state net energy billing rules set by the Maine Public Utilities Commission, so your export terms are essentially the same on either system. A handful of consumer-owned utilities also serve pockets of the state — Kennebunk Light & Power District, Houlton Water Company, Madison Electric Works and Eastern Maine Electric Cooperative among them — and their net-metering terms can differ, so check locally if you're served by one of these.
What you’re paid for what you export
Maine calls it net energy billing (NEB), and it's the old-fashioned deal: exports earn the same retail rate you pay — currently 28.7 cents/kWh — with credits banking for up to 12 months before they expire. That twelve-month window is the quiet star of the show. Production here swings hard between June and December, and NEB lets you stockpile the bright months and spend them through the dark Maine winter: a seasonal battery you didn't have to buy. Fair warning: NEB has been a political football, argued over and reviewed more than once, so terms could tighten for future installs. For residential systems signing up today, though, retail-rate crediting is still the rule.
Maine incentives & taxes in 2026
Don't come to Maine looking for a pile of cash incentives — there's no state solar tax credit and no SREC market for home systems. The value proposition is simpler than that: nearly 29-cent electricity, offset at full retail. What the state does offer is help with the borrowing — Efficiency Maine runs low-interest loans for solar and heat pumps, which matters when the whole cost lands upfront — plus a property-tax exemption, so the panels won't nudge your assessment. Sales-tax treatment has been less settled, so confirm the current position before you sign.
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 Maine list, then type any incentive into the calculator above to see how it shortens your payback.
What solar costs in Maine
Budget $21,000 to $29,000 for a 7-8 kW system: Maine prices run $3.00 to $3.60 a watt, dearer than most of the country. Northeast labour rates, mounting that has to shrug off snow load, and the logistics of a spread-out rural state all feed into that. And since no state cash incentive shaves the figure, the number on the quote is very close to the number you'll actually pay.
The honest verdict for Maine
Maine shouldn't work on paper — cold, northern, cloudy, with output around a modest 1,250 kWh per installed kW a year — and yet it does. The reason is price. At 28.7 cents a kilowatt-hour, with net energy billing paying exports the same rate, every panel displaces genuinely expensive electricity at full value. Payback on an owned system now lands in the teens rather than under ten, which for a state this far north is still a defensible result — earned entirely by high rates and honest metering, not by any generous programme.
Sources for this page
Driving electric — or heating electric — in Maine?
Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the Maine EV charging cost and the Maine heat pump vs gas comparison.