Oh sorry what I meant was more how much an individual can make on these subsidies. I know the aggregate is significant and not in relation to the immediate effects. I think it's also, on a rational level, quite clear that the redistributive effects of the subsidies are of dubious nature and politically motivated; every tax payer contributing to elevated savings yields of those with 20k to spare or the creditworthiness to borrow as much ranges from silly when one is in a forgiving mood to outright immoral when one is not.

Maybe I was diverting the conversation, I was just pointing out that those who installed PV panels in Belgium got a very nice yield on their investment. I haven't run the numbers with the latest payouts and panel costs (PV panel cost has come down significantly already over the last few years) so I don't know the state of the art. I was interested in comparing subsidy schemes with other countries.

(as an extra data point, the Netherlands provides only a fixed subsidy for PV panels, and there's a fairly low ceiling to the total that can be paid out a year; based on a first come, first serve system. The period to recuperate the investment is about 20 years, which is quite long; in Belgium one can earn back the investment in about 6 years and everything after that is pure profit).