Cost to Run a Reptile Heat Lamp / Terrarium in Montana
Montana's average residential electricity rate is 14.7¢/kWh as of May 2026 — the 13th cheapest in the country, 20% below the U.S. average. At typical usage (12 hours/day), a reptile heat lamp / terrarium here costs $5.36 per month.
Per hour
1.5¢
at 50–250 W
Per day
$0.18
12 hours/day
Per month
$5.36
36 kWh
Per year
$64.39
438 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (6 hrs/day) | 8.8¢ | $2.68 | $32.19 |
| Typical (12 hrs/day) | $0.18 | $5.36 | $64.39 |
| Heavy (24 hrs/day) | $0.35 | $10.73 | $129 |
Montana vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a reptile heat lamp / terrarium in Montana?
At Montana's current average residential rate of 14.7¢/kWh (May 2026), a reptile heat lamp / terrarium with typical usage costs about $0.18 per day, $5.36 per month, or $64.39 per year.
Is running a reptile heat lamp / terrarium in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 20% below the U.S. average: $5.36 per month here versus $6.71 nationally.
What does electricity cost in Montana right now?
Montana residents pay an average of 14.7¢ per kWh as of May 2026 — the 13th cheapest rate of the 51 U.S. jurisdictions we track.