Solar energy can be used exhaustlessly but the cloudy day will impact the efficiency of solar heater.
Heat pump is a very good alternate solution to replace the electric heater in large system.
The specification of the Solar water heater system can be manufactured by customer's request in size or material.

Applications :
Large Dormitory.
Industrial Process Heating.
Large Sauna Bath.
Warm Water Swimming Pool.
Husbandry Vapor System.