> household solar rarely breaks even.

mate, I dunno what your smoking, but it deffo does. I'm about 50% "paid off" and I had an expensive setup. Installed now the equivalent costs about 50% of what it did.

> Scotland and Wales wants more renewable but the UK government says no.

National grid say "holy shit I need to build more cables" then local people say "ewwww pylons" and shit gets more expensive. There is a bottleneck between england and scotland, which is partially being solved by https://www.nationalgrid.com/the-great-grid-upgrade

The whole boo england, poor scotland/wales thing gets tired super quick. its being solved, is it being solved fast enough? no, but thats because we have a raised a shit generation of empty politicians from across UK and NI. (and the co-dependent pundit class)

> The renewable farms we do have are mostly funded by private investments firms.

Mostly pension funds. but yes, private. However given the high turnover of (useless) polticians, and a civil service that has had all is expertise hollowed out and replaced by consultancy firms, I don't think public funding, without structural reform is a good idea (look at railways for example)