Not sure what the price is elsewhere, but I got 6.4 kW solar panels and a 10kW battery backup last year, and the cost was $33k USD. This was in U.S. Midwest (Colorado) and with a local (not National) Solar provider.
I paid cash to avoid the 6% rate loan and additional fees, and I received a $9k tax credit for it this year, bringing the total cost down to $24k. I think this is an expense beyond many Americans, especially since this system could take over a decade to pay for itself, if it does at all.
No point here, just figured I’d point it out so people are aware of the cost. And bear in mind, this is a small system, in a small (just over 1k sq/ft) home.