I wrote a short time ago about the solar area needed to power the world. As a result, I was fascinated to find this article from a few months ago.
On the vast majority of rooftops, nothing is done with this space. Covering the half of these roofs that face the right way, with solar panels, would be able to power the world.
This would have another advantage. If the whole world was solar powered, and we connected all countries around the world, then batteries could be unnecessary – Europe could power America and Australia during the night, and they could return the favour during our night.
The UK has been very foolish, but greatly increasing the price of Solar. This must be reversed to not put off the Solar roll out.