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How Much to Run a Space Heater in Maine? $0.45/Hr, $752/Winter

Running space heater in Maine costs about $0.45 an hour and roughly $752 for the winter — 1,500 W for 9.2 hours a day at 29.81¢/kWh.

$0.45per hour
$752per 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

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Space heater in Maine: watts ÷ 1,000 × hours × days × rate. Estimate, not a quote.
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Per hour
$0.45 at 29.81¢/kWh
Per winter
$752 (182 days)
Hours per day
9.2 (NOAA state heating degree-days-scaled)
Degree-days used
6,471 (NOAA CPC state, population-weighted)
Wattage
1,500 W (typical 750–1,500)
Maine rate
29.81¢ (October 2025–March 2026 average)
Rank of 20 cold states
1 (most expensive)

Why this number

Running space heater in Maine costs about $0.45 an hour and roughly $752 for the winter — a 1,500 W unit for 9.2 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 5.0 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 space heater longer than the national baseline in October–March — 9.2 hours a day on the NOAA state degree-day scaling used here, against 5.0 nationally — and pays 29.81¢/kWh for it. Those two numbers, times 1,500 W, are the whole $752.

Space heater cost in Maine by hours per day — per day / per winter

Space heater 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 $0.45 / $81 $0.34 / $61 $0.41 / $75 $0.25 / $46
2 h $0.89 / $163 $0.67 / $122 $0.82 / $150 $0.50 / $92
4 h $1.79 / $326 $1.34 / $245 $1.65 / $300 $1.01 / $183
6 h $2.68 / $488 $2.02 / $367 $2.48 / $450 $1.51 / $275
8 h $3.58 / $651 $2.69 / $489 $3.30 / $601 $2.02 / $367
12 h $5.37 / $977 $4.03 / $734 $4.95 / $901 $3.02 / $550

What Maine’s utilities charge for it

Maine's largest electric utilities and what space heater costs per hour and per winter at each one's average price
Utility Residential customers ¢/kWh (EIA-861 2024) Per hour Per winter at 9.2 h/day
Central Maine Power Co 577,955 22.4¢ $0.34 $565
Versant Power 137,906 27.5¢ $0.41 $694
Electricity Maine, LLC 17,749 16.8¢ $0.25 $424

What the numbers say about space heater 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 space heater 9.2 hours a day against the national 5.0 — 4.2 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 space heater: $752 for the 182-day winter, against Nebraska’s $220 and Maine’s $752. Central Maine Power Co, Maine’s largest utility with 577,955 residential customers, averages 22.4¢ — $565 for the same hours — while Electricity Maine, LLC at 16.8¢ comes to $424, a $141 spread on identical use. Per million Btu delivered, resistance heat at 29.81¢ costs $87.36 against $19.89 for natural gas at Maine’s winter average of $1.89/therm, so a 1,500 W heater is a room-by-room supplement in Maine, not a whole-house plan. 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 space heater runs.

Frequently asked questions

How much does it cost to run space heater per hour in Maine?

$0.45 an hour for a 1,500 W unit at Maine’s October 2025–March 2026 average average of 29.81¢/kWh (1,500 ÷ 1,000 × 0.2981); at Central Maine Power Co’s 22.4¢ it is $0.34.

How much does space heater cost for the whole winter in Maine?

About $752: 1,500 W × 9.2 hours a day × 182 days (October–March) × 29.81¢. The hours are the national 5.0 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 space heater expensive to run in Maine compared with other cold states?

Maine is the most expensive of the 20 cold states on this site at $752 a winter; the range runs from Nebraska ($220) to Maine ($752), driven almost entirely by the electricity rate.

How we calculated this

Worked for space heater in Maine: 1,500 W ÷ 1,000 × 0.2981 $/kWh = $0.45 per hour; hours per day = 5.0 × (6,471 ÷ 3,500) = 9.2; 1,500 ÷ 1,000 × 9.2 × 182 × 0.2981 = $752 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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