100-Watt vs 150-Watt Pond Pump: Running Cost Compared
A 150-watt pond pump costs $3.15 more per month than a 100-watt pond pump ($38.33 per year), assuming 12 hours a day at $0.175/kWh. Per hour the difference is $0.009.
Side by side
| 100-watt Pond Pump | 150-watt Pond Pump | |
|---|---|---|
| Power | 100 W | 150 W |
| Hours per day | 12 | 12 |
| Cost per hour | $0.018 | $0.026 |
| Cost per day | $0.21 | $0.315 |
| Cost per week | $1.47 | $2.21 |
| Cost per month | $6.30 | $9.45 |
| Cost per year | $76.65 | $114.98 |
| Energy per year | 438 kWh | 657 kWh |
Based on $0.175 per kWh (US average).
Which should you choose?
Higher wattage does not always mean more heat or output per dollar, and it does not always mean it runs longer. A bigger unit may reach the target temperature faster and then cycle off. Compare size to your room or job before you decide.
Want your own numbers? Open either calculator and enter your hours and rate: 100-watt Pond Pump or 150-watt Pond Pump.