2013 11 26 the garden shed is up. it is in back of the house and has a slanted roof for solar panels. the three panels that will go on its roof supply electrical power to a hot water heater. i prefer photovoltaic solar panels to solar thermal collectors because i believe they are more reliable and less troublesome to install.
it is somewhat unusual to have them directly power a hot water heater and a bit less efficient than letting them feed power to the grid connected house circuitry. it came about because the roof on the shed originally was to have solar thermal collectors. this fell apart when the manufacturer we had selected quit making the collectors.