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A comment on California farmers are planting solar panels as water supplies dry up. Parent comment

Re:California farmers are planting solar panels as water sup... by mkl on Thursday August 01, 2019 @09:22PM (#20589987)
Why 42° specifically? Is it related to the current cost and efficiency?
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Re:California farmers are planting solar panels as water sup... by sremani on Thursday August 01, 2019 @10:23PM (#20590270)
Its a thumb rule of sort!

https://globalsolaratlas.info/

The red area in the map is the most productive part for Solar and Orange is partially good.

Solar is very geographically dependent, also high altitude is good, that is why Tibet/Colorado is in dark red. Precipitation is a problem for Solar, that is why Florida is OK but not great place for it.

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