1.5 kW for 3 h/day uses 4.438 kWh per day: 135 kWh and about 33.75 € per month at 0.25 €/kWh.
Cost per month
€33.75
135 kWh
Cost per year
€405
1,620 kWh
Cost per day
€1.11
Cost per hour of use
€0.375
kWh per day
4.44kWh
Power in kW
1.5kW
1,500 W
CO₂ per year
405kg
at 250 g/kWh
Energy & cost by period
| Period | kWh | Cost (€) |
|---|---|---|
| Hour of use | 1.5 | 0.375 |
| Day | 4.438 | 1.11 |
| Week | 31.07 | 7.77 |
| Month | 135 | 33.75 |
| Year | 1,620 | 405 |
Quick reference: 1 kW running for…
| Time | kWh | At 0.25 €/kWh |
|---|---|---|
| 15 minutes | 0.25 | 0.063 |
| 1 hour | 1 | 0.25 |
| 8 hours | 8 | 2 |
| 24 hours | 24 | 6 |
| 30 days, 24 h | 720 | 180 |
| 1 year, 24 h | 8,760 | 2,190 |
- kWh = kW × hours. The label wattage is usually the maximum. Devices with thermostats or variable load (fridges, heaters, AC, PCs) draw less on average, so use the duty cycle or a plug-in meter.
- Your bill may also include a fixed standing charge, network fees and taxes that don’t scale with kWh. Use the all-in price per kWh for the most realistic figure.