Nov 142009
 

I’ve been using satelite data from Nasa to estimate the output of our solar panels. This website gives you more data than you can possibly use ! For my purposes the ‘data tables for a particular location’ (under Meterology and Solar Energy) are what I wanted. In particular the table of Average monthly insolation on tilted panel. […]

Nov 122009
 
Solar Survey

Performed a solar survey today. This is a check on the site of your solar panels to see what may obscure the sun at different times of the year. To do this I produced a 300mm circle divided in 10° segments and put this on top of a tall stepladder so than when I stood […]