How to gauge solar panel energy without turning on your load?

THE_RB

Joined Feb 11, 2008
5,438
Energy to run a 90v 10A (900W!) motor for "5 minutes" is a considerable amount.

Your idea of saving the cost of a battery by adding more solar panels (so it runs during cloud cover) is a false economy that will cost a lot more $$ and a lot more roof space and installation expense.

It is made even more inefficient by totally wasting all the solar energy when the sun is shining when your motor is NOT running.

The best choice for a batteryless system would be a smallish solar panel, running a much smaller power motor almost continuously (ie X hours per day).

Can you please say what the 900W "5 minutes" motor actually does? Then we can provide better suggestions for a good way for you to achieve the goal.
 
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