Depending on your country, pensions based investment accounts can SIGNIFICANTLY reduce your tax burden, but the funds are not accessible until you reach state pension age.
I would advise thinking about how far away your retirement is and the low-risk indexes available to such accounts, on top of your personal, regular trading account.
It’s going to happen worldwide and it is less of a reflection of a lack of interest, but the current price of PVs mean they are economical even without subsidies. link
I think this is a good thing, IF the subsidies are shifted from PV to other de-carbonising measures (e.g. increased heating system replacement subsidies).