skeptical of this because "shifting their energy usage to daytime hours, so they can use all those photons themselves instead of handing them off to the grid (where, alas, we often get ripped off by our utilities, who buy our electricity at a cheap rate and sell it back to use more dearly)." does not seem to understand the expenses of Having A Grid With Electricity Available, BUT....


@maya regardless of who pays for what, a systems calculator for my location says it would take about 14 years of operation to recover the installation cost

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@tkenben yeah, I live in a pretty grey place and I'd guess the math works out similarly. there still might be a use for such things in the overall energy system here, or even just the home battery storage part to smooth demand – but it makes me optimistic for other locations, at least. :)

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