I'm not arguing for individuals to front the costs. The costs it should be funded through government schemes for initial capital costs and supported by decent buy back tarrifs.
If there had been decent loan schemes and a decent tarrif many people could have had these on their properties at no cost to themselves and paid back via selling back electricity for decades. If houses are sold the costs can pass on with the house sale.
I live opposite council housing several of which have had panels on for over 10 years thanks to a scheme back in noughties. The residents have really low bills, and are still tied into to the old (good) tarrif.
In countries that have done this well. It has benefited the poor far more than it has the rich. Rich people don't have to worry so much about utility bills. Because there's such a small proportion of their household bills. But for poorer people after housing, utility bills are generally the biggest cost.
Additionally much greater investment could have been made into off shore wind.
We all show should have done much more for retrofitting through relatively low cost schemes around insulation and led lighting.
However, in the UK we didn't do this on scale.
Instead we pandered to the oil companies who gave huge donations to poltitcal parties to not do this. In particular, the Tory party have been given anywhere between ten and twenty million pounds from companies and individuals with fossil fuel interests. That sort of money comes with conditions and expectations.
I should add I have never been in a financial position to be able to afford solar panels!