Hello. Just this summer my parents installed a solar thermal system on their country home (IL). It is a small array consisting of 3 panels each 4' x 6.5' (~75 sq. ft. total) which they hope will heat most of their hot water.  I'm told this is a 75,000 BTU (22 kW thermal) per day system.

My question is: are you interested in tracking small installations like this? or only major projects?