There is a fairly new automated weather station at the side of the road not far from where I live here in Scotland - the solar cells are actually quite large -

There is a fairly new automated weather station at the side of the road not far from where I live here in Scotland - the solar cells are actually quite large - I'd guess about 0.50m by 1m. The whole setup is also pretty substantial probably to cope with the fact that supporting solar panels in a windy location requires a fair bit of strength!