As the following article, Solar Scam Article, PV solar schemes can easily burn through hundreds of millions of dollars before anyone even notices. Not only that, they fail in the most basic of stated aims - that of more quickly getting PV systems (or rather, any renewable) to substantially contribute to our energy needs.
Most people, even experts, think that at worst, it is neutral to our efforts in replacing renewables, but due to the competing interests for a finite number of available renewable energy certificates it is considerably worse than the Government spending nothing on it(*).
An infinite number of REC's implies an infinite budget so cannot be considered - and what is plainly happening is that the REC's are being lapped up by the most generous policy (in this case PV subsidy + feed-in tarrif guarantees), crowding out significantly more efficient and cost effective (even speedily built) large scale projects, that given no tariffs, could have been built by private enterprise for profit.
There are plenty of wind farm projects, large scale PV and solar thermal, as well as Geothermal which are being starved of funds. Private money is chasing the most generous public money rather than profitable energy enterprises.
(*) By which I mean alternative policies that do not favour small, inefficient installations, that are either revenue neutral or have more tax income than expenditure (eg carbon tax)