Solar farm has to switch off every second day due to negative prices

Re:Solar farm has to switch off every second day due to nega... by abraae on Thursday November 07, 2019 @02:59AM (#21471328)

According to this https://physics.stackexchange.com/a/71445:

> Electric power is the product of voltage and current. If there is no external circuit, there can be no current and thus no electric power can be delivered by the panel, i.e., the "electricity" is never developed and thus, there is no need to consider "where it goes".

There's also an interesting discussion in the linked post in more depth about electron hole-pairs.

My takeaway is that the temperature in the panel will not rise due to it absorbing any power that would otherwise go down the wires were the circuit complete.

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Re:Solar farm has to switch off every second day due to nega... by Udik on Thursday November 07, 2019 @03:33AM (#21471483)

Thanks for the find! The second comment to the first answer says:

"The equilibrium temperature of the connected panel should be slightly lower than the disconnected panel, because those hole recombinations introduce heat. But the efficiency is only something like 12% to begin with. So the temperature difference isn't like the difference between a white and black surface. More like the difference between a dark and slightly darker surface"

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