I'm not sure this makes sense? If you have a solar system setup at home, with a battery, electric heating and also ev charger, then it's all the same thing. Or am I misunderstanding something?
Electricity is a type of energy, but all energy isn't electricity. The total amount of energy is electricity + non-electricity energy, and solar doesn't yet equal to greater than 50% of that total.
“For the first time, solar was the largest source of electricity in the EU last month, supplying a record 22 percent of the bloc’s power.”
Great result, but not “biggest source of power” yet.