They seem too good to be true, so naturally I am skeptical.
Are you naturally callous and quite happy to see people poorer/older/more infirm than you die in order that you can be paid to play around with PV panels?
Because that's what the FIT schemes really mean.
Solar PV in these latitudes is nonsensical, we simply do not get enough sunlight, particularly at the times of year when electricity is most needed - domestic scale systems just will not produce meaningful amounts of electricity.
So where does the money come from to bribe people to install the things by having the generating companies pay significantly over the odds for a quantity of power they'll never get, and therefore hugely over the odds for the amount they'll actually get? From their own pockets, and they get all their money from their customers.
So electricity bills will go up in order to pay people to install PV systems which will do SFA to reduce our use of fossil fuels.
Given that,
as you know full well, old/poor people already die each winter because they can't afford fuel bills, do you think that problem will get better or worse as prices rise?
The whole thing is an outrageous scam - the government has invented a figure for the amount of electricity that will be generated, based on the exaggerated claims of makers who are little better than charlatans, so that they can say they've met some of their carbon reduction targets when in reality they will have done nothing of the sort, and to encourage people to back up their pretence they have created a perverse form of redistribution of wealth from the poorest members of society to the middle classes to spend on a pointless hobby.
So, ask yourself why you want to install PV.
Will it improve the appearance of your home? No.
Will it have environmental benefits? No.
Will it enrich you personally? Quite possibly, but that leads back to my opening question.