More Solar for "Us"
Ok, I went off.the deep end? Bought 3 used 37watt uni-solar panels and a blue sky 2000e controller for the hefty price of $400, They were being listed as 75w panels, they are not The tested open...
Forum Discussion
CA Traveler wrote:
... many start with a smaller solar system and PWM is much more cost effective for smaller sizes. And then with upgrades to more solar there is just no practical starting over.
Small systems favor PWM, yes. The question is - do you need a small system.
If the intended living is offgrid and longer than a few days, - oversize the solar, cover the whole roof with panels. MPPT will be most logical choice then.
There can be exceptions to the rule when PWM would work better, ex. particular weather pattern or roof plan. Or - scenarios when solar won't work well, no matter what size or what controller - like rainy PNW/BC. Then just get whatever is cheaper, you won't be able to live off this power anyway.
