Save on your fuel bills.
Add the Parsons Switch pack to your PV system and this is now possible.
We combine a switch which monitors your PV output with a purpose built dual element immersion heater.
With this system the 1kW element of the new immersion will only come on when the PV panels provide 1.5kW's of power so it heats the water tank only when sufficient light is available. The Parsons Switch does NOT reduce the PV meter reading.