Electricity Cost Calculator
Calculate the daily, monthly, and annual electricity cost of running grow lights and pumps. Useful for budgeting a new setup or sizing your ongoing power bill against a reservoir or cycle length.
US residential average is about $0.17/kWh per the U.S. EIA Electric Power Monthly. Check your utility bill for a local figure.
Cost per gram harvested (optional)
Select a plant with published yield data to estimate $/gram. Cycle length uses the midpoint of the plant's published harvest-ready range.
- Daily
- $0.27
- Monthly (30 days)
- $8.16
- Annual (365 days)
- $99.28
No current plants have published yield ranges. This unlocks when the database grows.
Monthly uses 30 days and annual uses 365 days for direct comparison against a utility bill. Pump and lights share one daily run-time; if your pump runs continuously while lights cycle, calculate each draw separately and add the results.