We compare dated manufacturer information and show our calculations. We have not physically tested these systems. Merchant links are ordinary links; no affiliate account or paid ranking is implied.
A year of electricity, by model.
Only 5 of the 13 gardens we list publish a monthly kWh figure. For those, this is the maker’s figure × 12 × the average residential rate.
| Garden | Per month | US average ($0.1831) | California | New York | Illinois | Texas |
|---|---|---|---|---|---|---|
| Click & Grow Smart Garden 3 | 3.8 kWh | $8.35 | $15.33 | $13.63 | $8.76 | $7.24 |
| Click & Grow Smart Garden 9 | 6.2 kWh | $13.62 | $25.01 | $22.25 | $14.30 | $11.81 |
| Gardyn Studio 2 | 26 kWh | $57.13 | $104.86 | $93.29 | $59.97 | $49.55 |
| Rise Gardens Rise Garden 3 | 40 kWh | $87.89 | $161.33 | $143.52 | $92.26 | $76.22 |
| Gardyn Home 4 | 47 kWh | $103.27 | $189.56 | $168.64 | $108.40 | $89.56 |
Work out your own.
Find the price per kWh on your electricity bill and multiply: kWh a month × 12 × your rate. At 20 cents per kWh, a garden using 26 kWh a month costs 26 × 12 × $0.20 = $62.40 a year.
A light’s wattage alone isn’t a monthly figure: it depends on how many hours a day the lights run, and on pumps and fans. Where a maker publishes only a wattage, we leave monthly use unknown.
Budget Gardyn Studio 2 ↗Gardens that don’t publish monthly use.
- LetPot LPH-Air: not published
- LetPot LPH-Max: not published
- LetPot LPH-SE (Senior): not published
- Lettuce Grow Farmstand Nook: not published
- Plantaform Smart Indoor Garden 3.0: not published
- Rise Gardens Personal Rise Garden: not published
- Spider Farmer SmartG12: not published
- Tower Garden HOME + indoor lights: not published
Sources and what remains unknown.
Product specifications and advertised prices were checked on October 17–18, 2026. Prices and packages can change. Monthly energy values are manufacturer estimates, not measurements by Indoor Garden Scout. Where facts are unknown, we leave them unknown.
- Gardyn electricity guide and state rates ↗
- EIA Electric Power Monthly ↗
- Gardyn Studio 2 electricity estimate ↗
- Gardyn Home 4 electricity estimate ↗
- Rise Gardens Rise Garden 3 electricity estimate ↗
- Click & Grow Smart Garden 3 electricity estimate ↗
- Click & Grow Smart Garden 9 electricity estimate ↗
Calculations are our own arithmetic from the stated inputs. Hypothetical examples are labelled and exclude unentered costs, time and harvest value. Check the exact order, current policies and care instructions before buying.