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Thanks. Well consider each solar panel is effectively a very accurate monitor of solar energy reaching the ground, so that tells us about the atmosphere above the installation, useful for climate science.

Also, for grid operators, believe it or not they don't really know how much energy solar is producing. Huge solar plants can talk to the grid, but how do you get every single house with panels to share data? I spoke to someone from one if the energy companies here in the UK, they just deal in aggregate production/demand, they have no detailed data.

I would also think this could be used to monitor hardware performance over many systems and give data about common issues to manufacturers and developers of solar PV equipment.

There are probably a lot if applications I didn't think of, the data just doesn't exist today, it's all siloed behind different servers.