When more water is required on hot, sunny days, increased power will be available for water pumping. This is also true for water purification. Increased sunlight produces greater microbiological activity, which increases the load on water purification equipment. Increased sun on PV produces more pumping power and is an excellent match for water harvesting. Eight 43 watt modules.
Power system has no fuel costs and virtually no maintenance requirement.
The lifespan of the solar modules is around four times the useful life of the diesel engine.