We have been lucky to have wonderful weather since Easter. This has meant the newly commissioned biomass and solar system has been working overtime.
The boiler turns on the solar pump when the temperature difference between the solar panels and the top of the thermal store is sufficient.
There is a meter which measures the free energy from the sun. In three days over 47 kWh!
Thus far I have had the main electric supply and meter in the garage. Very useful when the house was knocked down. It has today been moved from the garage over to the meter box fixed into the wall of the house. Another step forward to moving back into the house!