Im in Spain, near Barcelona.
Just installed 10 kW nominal PV array, 3-p, and our costs dropped from 400 to 100 with a further 100 reduction to come soonish == near 0 € power costs.

The critical path is:

We could finance this aka had the money or credit.
We had plenty of roof space well orientated aka "towards the sun".
Don´t need the PV company financing at 300% of project costs over 10 years.

The company wanted to do 2 major errors in the installs - i stopped.
Probably, 90% of clients would not know about dc line transmissions loss,
or care about visible installations infrastructure.