For the next six months, hot water is the wrong term, the solar panels barely produce warm water.
Results from the solar hot water project, July 2021/
A mini heatwave in April provided 22 days of hot water. Mostly above 50C.
13 days above 40C plus 4 days above 50C.
3 days in February produced hot water above 40C.
The two peaks above 70C provided by the immersion heater.
The three peaks above 70C provided by the immersion heater.
The solar panels produced no hot water in December. Any sunlight appearing this month made no noticeable difference to the tank temperature.The red line at 60C is the immersion heater in use.
Two days at beginning of the month touched 50. Two more days around the 10th made high 40’s. Five high points over 60 using the immersion for disinfect cycle.