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How Much to Run a Heat Pump in Maine? $1.04/Hr, $2,061/Winter

Running heat pump in Maine costs about $1.04 an hour and roughly $2,061 for the winter — 3,500 W for 10.9 hours a day at 29.81¢/kWh.

$1.04per hour
$2,061per winter, 182 days
6,471heating degree-days, NOAA

· Source: EIA Electric Power Monthly Table 5.6.A (July 2026 data) · next EIA update ~Oct 23

On this page: CalculatorTableHow we calculatedSources

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Heat pump in Maine: watts ÷ 1,000 × hours × days × rate. Estimate, not a quote.
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Per hour
$1.04 at 29.81¢/kWh
Per winter
$2,061 (182 days)
Hours per day
10.9 (NOAA state heating degree-days-scaled)
Degree-days used
6,471 (NOAA CPC state, population-weighted)
Wattage
3,500 W (typical 1,200–8,000)
Maine rate
29.81¢ (October 2025–March 2026 average)
Rank of 20 cold states
1 (most expensive)

Why this number

Running heat pump in Maine costs about $1.04 an hour and roughly $2,061 for the winter — a 3,500 W unit for 10.9 hours a day over 182 days (October–March) at Maine’s October 2025–March 2026 average average of 29.81¢/kWh. The hours are the national 5.87 h/day baseline scaled by NOAA CPC state population-weighted HDD, October 2025–March 2026 (6,471 vs the CONUS 3,500); your utility’s rate moves it (table below), and the calculator takes your own wattage, hours and rate.

Maine runs heat pump longer than the national baseline in October–March — 10.9 hours a day on the NOAA state degree-day scaling used here, against 5.87 nationally — and pays 29.81¢/kWh for it. Those two numbers, times 3,500 W, are the whole $2,061.

Heat pump cost in Maine by hours per day — per day / per winter

Heat pump cost per day and per winter in Maine at 1 to 12 hours a day, at the state average rate and its largest utilities' EIA-861 prices
Hours per day Maine avg 29.81¢ Central Maine Power Co 22.4¢ Versant Power 27.5¢ Electricity Maine, LLC 16.8¢
1 h $1.04 / $190 $0.78 / $143 $0.96 / $175 $0.59 / $107
2 h $2.09 / $380 $1.57 / $285 $1.93 / $350 $1.18 / $214
4 h $4.17 / $760 $3.14 / $571 $3.85 / $701 $2.35 / $428
6 h $6.26 / $1,139 $4.70 / $856 $5.78 / $1,051 $3.53 / $642
8 h $8.35 / $1,519 $6.27 / $1,142 $7.70 / $1,401 $4.70 / $856
12 h $12.52 / $2,279 $9.41 / $1,712 $11.55 / $2,102 $7.06 / $1,284

What Maine’s utilities charge for it

Maine's largest electric utilities and what heat pump costs per hour and per winter at each one's average price
Utility Residential customers ¢/kWh (EIA-861 2024) Per hour Per winter at 10.9 h/day
Central Maine Power Co 577,955 22.4¢ $0.78 $1,549
Versant Power 137,906 27.5¢ $0.96 $1,901
Electricity Maine, LLC 17,749 16.8¢ $0.59 $1,161

What the numbers say about heat pump in Maine

Maine logged 6,471 population-weighted heating degree-days over October–March (NOAA CPC state series), 185% of the CONUS figure of 3,500, which is why this page runs heat pump 10.9 hours a day against the national 5.87 — 5.0 hours more. At Maine’s October 2025–March 2026 average rate of 29.81¢/kWh that makes it the most expensive of the 20 cold states for heat pump: $2,061 for the 182-day winter, against Nebraska’s $603 and Maine’s $2,061. Central Maine Power Co, Maine’s largest utility with 577,955 residential customers, averages 22.4¢ — $1,549 for the same hours — while Electricity Maine, LLC at 16.8¢ comes to $1,161, a $387 spread on identical use. Per million Btu delivered, this unit at the NEEP median COP of 2.17 costs $40.26 against $19.89 for natural gas at Maine’s winter average of $1.89/therm, which is the whole-house comparison the Maine heating page works through. Maine’s winter-average rate (29.81¢) sits 2.60¢ below its July 2026 reading of 32.41¢; the season figure uses the winter average because that is when heat pump runs.

Frequently asked questions

How much does it cost to run heat pump per hour in Maine?

$1.04 an hour for a 3,500 W unit at Maine’s October 2025–March 2026 average average of 29.81¢/kWh (3,500 ÷ 1,000 × 0.2981); at Central Maine Power Co’s 22.4¢ it is $0.78.

How much does heat pump cost for the whole winter in Maine?

About $2,061: 3,500 W × 10.9 hours a day × 182 days (October–March) × 29.81¢. The hours are the national 5.87 h/day scaled by NOAA CPC state population-weighted HDD, October 2025–March 2026 (6,471 against the CONUS 3,500); enter your own hours above for your own figure.

Is heat pump expensive to run in Maine compared with other cold states?

Maine is the most expensive of the 20 cold states on this site at $2,061 a winter; the range runs from Nebraska ($603) to Maine ($2,061), driven almost entirely by the electricity rate.

How we calculated this

Worked for heat pump in Maine: 3,500 W ÷ 1,000 × 0.2981 $/kWh = $1.04 per hour; hours per day = 5.87 × (6,471 ÷ 3,500) = 10.9; 3,500 ÷ 1,000 × 10.9 × 182 × 0.2981 = $2,061 for the winter. Rate: EIA Electric Power Monthly 5.6.A (October 2025–March 2026 average); degree-days: NOAA CPC state population-weighted HDD, October 2025–March 2026, against the CONUS total; utility prices: EIA-861 2024.

Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.

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