heat loss is a big deal even with well insulated tanks - you have to add quite a bit of heat to stabilize and maintain temp but free heat all winter from like a couple panels but you may do better with a parabolic mirror #concrete cistern #120w tec #delta wye #off grid
heat loss is a big deal even with well insulated tanks - you have to add quite a bit of heat to stabilize and maintain temp but free heat all winter from like a couple panels but you may do better with a parabolic mirror #concrete cistern #120w tec #delta wye #off grid
