But it should be remembered that you don’t have to live in a hot country to have solar panels installed on your roof. An advanced system such as SolarUK’s LaZer2 can supply up to 70% of a household’s annual hot water needs. it doesn’t need direct bright sunshine or high temperatures to work effectively: it only needs daylight. The horizontally-mounted vacuum tubes have a curved surface and can be mounted off the idea angle yet still absorb the same amount of energy. The tubes will compensate for changes in the sun’s angle over the course of the year.

This post was mentioned on Twitter by elpismag: Big PV solar plant being build in Spain. Shine on! http://www.energyrefuge.com/blog/spain-gets-bigger-on-solar-power/...