There is some nervousness ahead of the Governments spending announcements on 20th October, with speculation that the feed-in tariff rates could be changed, with the regression date moved forward or future rates reduced. There is also concern that the retrospective granting of the tariff to early sdopters will be cancelled after all, which would be a major disappointment to the early adopters and an unfortunate reduction in confidence for the PV sector as a whole. Rumours alone of potential reduction can damage this embryonic market, which is the opposite of what is required to energise this sector. Therefore the government announcements later in October will have major signficance for this sector, especially regarding the planning of larger installations and their long trem viability. While the returns on a PV system today remain attractive, a modest change in future tariffs could change the viability considerably.