messagenews: snipped-for-privacy@h3g2000cwc.googlegroups.com...
I lived on a boat for many years where the only source of electricty was PV panels. In such a set up you can watch the ammeter connected to the panel and see exactly how much power you are getting at any moment. In winter, when the sun is lower (and thereofre less powerful) and the days are shorter, you get far far less power than in the summer. They don't 'work best on cold wintery days'. You only get a decent amout of power when the bright sun is actually shining directly onto the panel. When it is overcast you are luck to get 10% of that.
Robert