There's two types of sales- the informed, conscientious and add value type. then there's the Arther Daily school.
Arthur doesn't care and looks no further than instant profit without any concern for the client, for the sold product or post sale after care.
It is clear that you are the latter. Worse thing being that you have no real knowledge on the viability of the products you sell and install to offer value over the term of 'investment'.
Your silence speaks volumes, and I'm sorry to say that without exception your response to the requests to back up your industries claims have been non existent. A clear indicator that our critic of PV is nearer to the truth than the sales babble you and your industry is full of.
As for your comment
I have little doubt that PV will continue to improve in efficiency given continued investment in much the same way the solar thermal collectors have in recent years. No investment will = no improvement.
So are you saying that you are selling product that isn't much use at the moment, but in a few years (maybe, maybe, maybe)we can sell you new generation high output PV panels that
might actually be viable in the UK and
might offer an ROI similar to the "up-talk, sales baloney" we use now to get sales ?
Arthur would say take this Mini 1 D at the moment and the minute I get a hydrogen fuel cell car, I'd do a swap-age scheme for you