Solar panels work in cold weather — in fact, they work better in cold than in heat. A clear winter day at −5 °C produces about 10 % more power than the same panel at 25 °C.
UL/CSA 62368-1, the Product Safety Standard for Audio/Video, Information and Communication Technology Equipment - Part 1: Safety Requirements, has been updated with a fourth revision to include the latest hazard-based safety principles and requirements that emphasize product.