Hello,
I installed 2x 290W PV panels coupled with a 600 W microinverter over the summer, I was able to follow my production with an EmonPi. With the use of the app My Solar, I was able to determine that 80% of my production was exported to the grid (August-September 2021)
As a result, I decided to install an electric water boiler (15L) and a solic 200 from Earthwise products to divert my excess PV production for the production of hot water in parallel with my existing gas boiler.
Last month, I was able to get most of my hot water from my PV diverting system and the resulting export production was reduced by about 50%.
I switch from the existing gas boiler to the PV fed electric boiler with a simple 3 way valve controlled by a thermostat.
It works pretty well so I thought it would be interesting to share with others.
To me, this is a good alternative to either batteries or conventional solar water heating systems