I just recently noticed that the maximum power that I am getting from my panels has dropped quite a bit.

I have 12 210 watt panels that should provide about 2500 watts of power at peak. (In fact I've seen numbers higher than this.) Lately I see no more that 1950 watts.

Looking into things I see that each of the 4 blocks of three panels act the same. If I disconnect any block I see about a 460-ish drop in power. If I disconnect all but 1 group, I see about 460 watts.

This is of course near noon. The panels have just been adjusted for the angle to the sun and cleaned. Also I put on about a 2500 watt load.

The fact that in every circumstance the solar panel blocks behave the same leads me to think they are OK. Well, or all are bad in very much the same manner.

So, the question of heat. It's 3:00 PM here and it's still 105F degrees. Does anyone know if the heat could explain this?

Thanks in advance-

emerika

I have 12 210 watt panels that should provide about 2500 watts of power at peak. (In fact I've seen numbers higher than this.) Lately I see no more that 1950 watts.

Looking into things I see that each of the 4 blocks of three panels act the same. If I disconnect any block I see about a 460-ish drop in power. If I disconnect all but 1 group, I see about 460 watts.

This is of course near noon. The panels have just been adjusted for the angle to the sun and cleaned. Also I put on about a 2500 watt load.

The fact that in every circumstance the solar panel blocks behave the same leads me to think they are OK. Well, or all are bad in very much the same manner.

So, the question of heat. It's 3:00 PM here and it's still 105F degrees. Does anyone know if the heat could explain this?

Thanks in advance-

emerika

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