The short-sightedness of DECC is that they simply do not recognise the role played by existing systems which act as an incentive for new owners to take the plunge.
They think that the simple financial impetus given by the FITs rates are enough to get people to invest in micro renewables.
The reality is that the documented track record of data logged by existing systems provides real-world (as opposed to database predictions) of probable generation figures for potential system owners and that when installers refer potential customers to existing reference sites we all act as unpaid advisers who are able to promote renewables directly.
If DECC do see this then they don't think we should be rewarded for it.
As far as FITs eligibility conditions are concerned then anyone with a system that was installed prior to 15th July 2009 who has not registered with OFGEM for ROCs by 31st March 2010 will get nothing from FITs - anyone who does will qualify for the 9p rate.
Systems installed on or after 15th July 2009 - that are MCS certified - will get the full FIT rate. Any non-MCS systems will get nothing.