Cost to Run a Aquarium in Montana
Montana's average residential electricity rate is 13.9¢/kWh as of April 2026 — the 7th cheapest in the country, 26% below the U.S. average. At typical usage (24 hours/day (always on)), a aquarium here costs $10.14 per month.
Per hour
1.4¢
at 50–300 W
Per day
$0.33
24 hours/day (always on)
Per month
$10.14
73 kWh
Per year
$122
876 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | $0.17 | $5.07 | $60.88 |
| Typical (24 hrs/day) | $0.33 | $10.14 | $122 |
| Heavy (24 hrs/day) | $0.67 | $20.28 | $244 |
Montana vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a aquarium in Montana?
At Montana's current average residential rate of 13.9¢/kWh (April 2026), a aquarium with typical usage costs about $0.33 per day, $10.14 per month, or $122 per year.
Is running a aquarium in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 26% below the U.S. average: $10.14 per month here versus $13.72 nationally.
What does electricity cost in Montana right now?
Montana residents pay an average of 13.9¢ per kWh as of April 2026 — the 7th cheapest rate of the 51 U.S. jurisdictions we track.