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How Much to Run a Dehumidifier in Wisconsin? $0.10/Hr, $55/Summer

Running dehumidifier in Wisconsin costs about $0.10 an hour and roughly $55 for the summer — 500 W for 6.3 hours a day at 19.06¢/kWh.

$0.10per hour
$55per summer, 92 days
501cooling degree-days, NOAA

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

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Dehumidifier in Wisconsin: watts ÷ 1,000 × hours × days × rate. Estimate, not a quote.
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Per hour
$0.10 at 19.06¢/kWh
Per summer
$55 (92 days)
Hours per day
6.3 (NOAA state cooling degree-days-scaled)
Degree-days used
501 (NOAA CPC state, population-weighted)
Wattage
500 W (typical 300–800)
Wisconsin rate
19.06¢ (July 2026)
Rank of 20 cold states
10 (10th most expensive)

Why this number

Running dehumidifier in Wisconsin costs about $0.10 an hour and roughly $55 for the summer — a 500 W unit for 6.3 hours a day over 92 days (June–August) at Wisconsin’s July 2026 average of 19.06¢/kWh. The hours are the national 12.0 h/day baseline scaled by NOAA CPC state population-weighted CDD, June–August 2026 (501 vs the CONUS 958); your utility’s rate moves it (table below), and the calculator takes your own wattage, hours and rate.

Wisconsin runs dehumidifier less than the national baseline in June–August — 6.3 hours a day on the NOAA state degree-day scaling used here, against 12.0 nationally — and pays 19.06¢/kWh for it. Those two numbers, times 500 W, are the whole $55.

Dehumidifier cost in Wisconsin by hours per day — per day / per summer

Dehumidifier cost per day and per summer in Wisconsin at 1 to 12 hours a day, at the state average rate and its largest utilities' EIA-861 prices
Hours per day Wisconsin avg 19.06¢ Wisconsin Electric Pow 19.2¢ Wisconsin Power & Ligh 16.9¢ Wisconsin Public Servi 16.2¢
1 h $0.10 / $9 $0.10 / $9 $0.08 / $8 $0.08 / $7
2 h $0.19 / $18 $0.19 / $18 $0.17 / $16 $0.16 / $15
4 h $0.38 / $35 $0.38 / $35 $0.34 / $31 $0.32 / $30
6 h $0.57 / $53 $0.58 / $53 $0.51 / $47 $0.49 / $45
8 h $0.76 / $70 $0.77 / $71 $0.68 / $62 $0.65 / $60
12 h $1.14 / $105 $1.15 / $106 $1.01 / $93 $0.97 / $89

What Wisconsin’s utilities charge for it

Wisconsin's largest electric utilities and what dehumidifier costs per hour and per summer at each one's average price
Utility Residential customers ¢/kWh (EIA-861 2024) Per hour Per summer at 6.3 h/day
Wisconsin Electric Power Co 1,048,148 19.2¢ $0.10 $55
Wisconsin Power & Light Co 437,211 16.9¢ $0.08 $49
Wisconsin Public Service Corp 411,775 16.2¢ $0.08 $47

What the numbers say about dehumidifier in Wisconsin

Wisconsin logged 501 population-weighted cooling degree-days over June–August (NOAA CPC state series), 52% of the CONUS figure of 958, which is why this page runs dehumidifier 6.3 hours a day against the national 12.0 — 5.7 hours less. At Wisconsin’s July 2026 rate of 19.06¢/kWh that makes it the 10th most expensive of the 20 cold states for dehumidifier: $55 for the 92-day summer, against Montana’s $21 and Alaska’s $103. Wisconsin Electric Power Co, Wisconsin’s largest utility with 1,048,148 residential customers, averages 19.2¢ — $55 for the same hours — while Wisconsin Public Service Corp at 16.2¢ comes to $47, a $9 spread on identical use. Wisconsin’s July 2026 rate of 19.06¢ sets the $0.10 per hour; its winter average of 18.39¢ is 0.67¢ lower, a difference that matters for heating loads but not for dehumidifier use in June–August.

Frequently asked questions

How much does it cost to run dehumidifier per hour in Wisconsin?

$0.10 an hour for a 500 W unit at Wisconsin’s July 2026 average of 19.06¢/kWh (500 ÷ 1,000 × 0.1906); at Wisconsin Electric Power Co’s 19.2¢ it is $0.10.

How much does dehumidifier cost for the whole summer in Wisconsin?

About $55: 500 W × 6.3 hours a day × 92 days (June–August) × 19.06¢. The hours are the national 12.0 h/day scaled by NOAA CPC state population-weighted CDD, June–August 2026 (501 against the CONUS 958); enter your own hours above for your own figure.

Is dehumidifier expensive to run in Wisconsin compared with other cold states?

Wisconsin is the 10th most expensive of the 20 cold states on this site at $55 a summer; the range runs from Montana ($21) to Alaska ($103), driven almost entirely by the electricity rate.

How we calculated this

Worked for dehumidifier in Wisconsin: 500 W ÷ 1,000 × 0.1906 $/kWh = $0.10 per hour; hours per day = 12.0 × (501 ÷ 958) = 6.3; 500 ÷ 1,000 × 6.3 × 92 × 0.1906 = $55 for the summer. Rate: EIA Electric Power Monthly 5.6.A (July 2026); degree-days: NOAA CPC state population-weighted CDD, June–August 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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