Why not install a PV off – grid system to power up my existing pump?
This does work but only to a certain degree. It cannot cover the costs properly. You would need a 4kw grid connect system and you will get close, but these are the main reasons it doesn’t quite do the job.
- A typical pool pump consumes around 12kWh a day
- A typical grid connects system produces say 4kWh per day for every kW of solar panels installed.
- A typical grid connects systems exports around 25% of the power produced. Householders rarely consume all that is produced.
- This means you need a 4kw system in order to produce on average 12kWh of usable solar power a day
- Most of the solar power is produced between 10am and 2pm
- Pool pumps run for 7 to 9 hours a day.
- Before 10am and after 2pm the pump will consume more electricity than the solar system can produce
- On heavy overcast days, the pump will consume more electricity than the solar power system can produce, all day
- If you already have grid solar installed and you tamper with it, you risk losing the government feed in tariff. It is always a better solution to install a separate off grid pool pump.