I can’t justify the extra expense of adding significant additional battery capacity to my solar installation with its current pricing. However, it’s interesting to note that having crunched the numbers, vehicle-to-home would have virtually eliminated all our grid consumption through the summer. It would only have been days when we needed to perform longer trips in the car on repeated days that would have caused us to import any energy at all.
Looking at optimising solar usage in the house is pointless without examining the background power draw of the house. If the background usage is high, we will burn through the energy stored in the house battery and start importing from the grid once the sun goes in.
The stored data/live views of the house can show the overall background power consumption, but not the specific detail. To avoid differences in consumption caused by appliances like TVs and cookers, I looked at the data when everyone was asleep.
