How Much Does a Grow light Cost to Run? (2026 Calculator)
Typical setup: 200 W · 8 h/day · $0.180/kWh
Daily
$0.29
Monthly
$8.63
Yearly
$104.99
Quick rate
Daily cost
$0.29
Monthly cost
$8.63
+$0.00 vs typical
Yearly cost
$104.99
kWh / month
48.0 kWh
Local monthly estimate: $8.63 · U.S. average equivalent: $8.63
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ad-after-calculator Quick answer
A typical grow light uses about 200 W and costs about $0.27/day or $8.06/month at the U.S. average rate of $0.17/kWh, assuming 8 hours of use per day. At the same rate, costs range from about $0.07/day (50 W) to $0.54/day (400 W).
State explorer
Quickly spot cheapest, highest, and near-average monthly costs.
Top 10 cheapest
Top 10 highest
- Hawaii $19.10
- Massachusetts $14.96
- Maine $14.75
- California $14.54
- Rhode Island $14.47
- New York $13.62
- Connecticut $13.58
- New Hampshire $12.63
- Alaska $12.25
- District of Columbia $11.39
Cost by state (monthly)
At typical 200 W and 8 h/day. Rates from our dataset (see methodology ). Open a state for a dedicated calculator page.
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ad-after-state-table Wattage range
| Level | Watts | Est. monthly @ avg rate |
|---|---|---|
| Low | 50 W | $2.16 |
| Typical | 200 W | $8.63 |
| High | 400 W | $17.26 |
Energy saving tips
- Avoid running this appliance longer than you need each day.
- Use built-in eco or energy-saving modes whenever available.
- Shift usage to off-peak hours if your utility offers time-of-use rates.
- Turn off lights when you leave a room.
- Use motion sensors or smart controls for outdoor and hallway lighting.
FAQ
- Most grow light units fall between 50 W and 400 W, with 200 W as a typical operating value for estimates.
- Our estimates use 200 W as the typical wattage, within a reported range of 50–400 W.
- At typical use (8 hours/day at 200 W), the estimate is about 1.60 kWh/day and 48.0 kWh/month at the U.S. average rate.
- With 8 hours/day and 200 W, this appliance uses about 1.60 kWh per day.
- At 8 hours/day, the monthly estimate is about 48.0 kWh per month.
- Per hour, the typical draw is about 0.200 kWh (at 200 W).
- At the U.S. average electricity rate of $0.17/kWh, the typical daily cost is about $0.27/day for 8 hours/day.
- At the U.S. average electricity rate of $0.17/kWh, the typical monthly cost is about $8.06/month at 8 hours/day.
- Running for one hour at 200 W costs about $0.03/hour (using 0.17 $/kWh as the U.S. average).
- With typical use (8 hours/day at 200 W), the estimate is about $0.27/day or $8.06/month at the U.S. average rate.
- The estimate is about 48.0 kWh per month, which corresponds to roughly $8.06/month at the U.S. average rate. Your real bill depends on your rate and runtime.
- Use energy-saving tips tailored to this appliance. For example: Avoid running this appliance longer than you need each day. — reducing kWh reduces the bill at your local rate.