Domestic photovoltaic panels are still very expensive to purchase and install. They produce most of their electricity in the middle of the day, when families normally need it the least. So what often happens is the owner either sells it to the grid for close-to-zero, or store it in a battery (very expensive, and with limited lifespan).
Payback time seems to be 10-15 yr.
Of course there other aspects beyond the economic one, enviromental or geopolitical for instance.
What's your opinion on the economy of domestic solar PV panel, with or without battery, good or bad?