Electricity cost calculator
List everything that draws power and how long it runs. Lights dominate, but the 24-hour small loads (fans, pumps, controllers) add up, and the AC pays again for every watt of heat the rest produce.
Devices
Result
3 devices
Uses nameplate wattage: drivers and ballasts often draw 5–10% above the lamp rating, and utilities may bill tiered or time-of-use rates rather than one flat $/kWh. Check a real bill for your marginal rate.
Wondering how much cooling that heat needs? Size the AC in BTU →
How much electricity does a hydroponic grow light use per month?
A typical 600W LED run 18 hours a day draws about 10.8 kWh daily, or roughly 324 kWh a month. Multiply that by your utility rate to get cost, then add fans, pumps, and any AC load for the full picture. Use the calculator above to total your exact setup and see daily, monthly, and per-cycle cost.