if you are doing lots of jobs the cost is spread over the total for the year. The reason I dropped MCS in the end is that we did only 2 jobs after the FiT was wiped, which meant future trading at that level would be about £1000 per job, with very little in the way of enquires coming in, that can't be justified. Fortunately those 2 jobs, were within the time scale of my registration. As it happened I did 4 jobs the following year, but that's would still be £500 per job. Did quite a few repairs, but that doesn't need MCS, and you only needed the cert for the FiT payment. No FiT, no point of MCS. I have been taking my revenge ever since by advising people how to do DiY on here...
2 chances of me returning to solar, for I have bought a motorhome and know how to drive it....
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I installed around 40,000 panels, it ******** my shoulder and they keep making the panels bigger and heavier. I have looked at returning to solar, but my shoulder says 'get lost'. I till do a few repair jobs, but that's as far as it will go. Repairs are less arduous on my shoulder, as it doesn't involve lugging panels up onto scaffolding, in and out of the van etc.