Seems obvious in retrospect. More sunlight gets through the thin air. The worst sun-burns of my life I got at altitude. Never seen a brighter day than when the sun is out and the snow covers the ground reflecting it back up. The panels work better in the cold.

#solarpunk

https://www.reuters.com/business/sustainable-business/switzerlands-solar-dam-sun-snow-perfect-mix-green-energy-drive-2023-02-06/