Here in Belgium there used to be big government subsidies for solar panels 5-10 ago.

Now the same wattage battery + solar setup without any government subsidies is a good chunk cheaper than that time with the large subsidies.

Pretty cool and shows the power of government renewables subsidies. A huge percentage of houses in Belgium have solar panels now.(and electricity still costs 0.30€/kWh average because of fossil fuel energy lobbies)

Now that there is a local industry around it, most renovations and almost all new builds include them.