I did not install panels
I have a perfect southerly facing roof and the funds available. There's a few reasons that need to be addressed before I would consider installing:
1) What information that is available is crap. More understandable data is needed on panel cost, performance, installation fees, maintenance, mean-time-to-failure etc.
2) The ROI is over 15-25 years. So unless you are staying put for that time, you'd be an idiot to install. Unless...
3) Do panels add to a home's value? Who gets the feed-in tariff after sale? Again, this information is not available.
4) Current panels are not efficient enough and there is no information on the dust-to-dust impact of the panels (i.e. do they make-up for the eco cost of their own manufacture?)
5) It is basically impossible from the easily-digested information how much power one can generate, and calculate the ROI. It can be done, but it's a PITA
6) Getting prices is nigh-on impossible
7) Have I mentioned how hard it is to get clear information?
8) Like "peter 45" I do not trust the government to keep-up the FIT, so the panels must be able to pay for themselves within a reasonable period. From what I can tell, if you do some basic energy saving (i.e. unplug stuff, good insulation) they simply won't. I define a "reasonable period" as 5 years or less.
9) The tech is not new (almost every house in Germany has solar collectors/cells) so why are they so expensive over here?
10) Getting clear information is hard. I think I've mentioned this.