Anecdote != data, subsidies are bad, etc etc - but my parents' PV installation is paying off at an 11% ROI right now (Belgium, heavily subsidized), up from an e

Anecdote != data, subsidies are bad, etc etc - but my parents' PV installation is paying off at an 11% ROI right now (Belgium, heavily subsidized), up from an estimated 8% at the time of installation (3 or so years ago) because of the high amounts of sunshine there have been there. Bring on the global warming. There are many people getting filthy rich on these installations (for example those who have large industrial buildings with roof space they don't use - they are getting 4-8% NET YIELD on as much money as they could borrow back in 2006-2007, which back then of course was easy as pie).