This depends very much on where you live. We’ve had solar hot water panels for the past 30+ years, and they work really well for us. We are in Brisbane, which helps 
.While I have quantified our savings with our PV panels (17.5% return), I havent done the same for the hot water. I do know that we very rarely have to use the electric power booster for the hot water. It’s probably about six months since we required any electric power at all, and that was for maybe a couple of hours after 3-4 days of overcast weather.
5 Likes
