You could in fact just connect the panels directly to the immersion heater supplying it with dc from the panels.
Connect solar panel to immersion heater.
Solar pv panels will often produce more energy than you can use in a day and without a solar battery your surplus will be sent to the national grid.
How to heat water with solar panels add an optional thermostat you can use a solar panel to make hot water or to keep water from freezing.
Installers can check the roof to see if it can support the panels.
They can also look at shading and other factors that might impact efficiency.
Simply wire the solar panel directly to the dc water heating element or through a thermostat to regulate the water temperature.
Temperature control panels can be placed within the tanks that control the water heater to ensure a consistent heat.
This would work better as the load would vary with voltage and the voltage would vary with the amount of sunlight.
Using immersion heater for water tanks will ensure that after the water is heated by either by solar or the regular power source it can be stored in insulated storage tanks for later use.
One popular application for our submersible dc water heating elements is to prevent freezing in stock tanks used for livestock.
Its intelligent sensing technology prevents the export of surplus power to the grid for negligible returns and uses it for local consumption meaning you.
Once it detects that electricity is being exported it diverts the electricity to the immersion heater to heat the water.
How do solar pv optimisers link solar pv and immersion heaters.
Modulation based solar pv surplus energy manager that monitors in house usage and pv power production to divert almost all the available surplus power to the immersion heater to heat water.
However you may not be aware that there is a gadget which enables you to keep this surplus energy use it to power your immersion heater reduce your electricity bills even further and still.
Getting the most out of a solar water heater.