Apart from installing a Clearview Log Burning stove, and living in an above average insulated property, Solar PV is my first major investment in environmentally friendly capital purchases.
There are inevitably many 'cowboys' in the solar PV industry, and I have come across one, PV Solar UK Limited a company that claimed to be a Which?recommendation. Which? have not made any recommendations. Also some of the technical info was rubbish.
Despite the considerable drop iin the FIT, at 21p per unit this pays 50% more than I am paying my supplier, and with the drop in the capital cost, my return is anticipated - by me - to be around 9/10% per annum.
This is one industry of the future, and as Edison suggested back in the 1930's, the sun offers the very best in renewable energy.For me, this is one of my better decisions, and I have no doubts abouts the benfits.

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1. Do your research, and do it thoroughly before you start contacting potential installers
2. Don't just rely on the financials, if the sun does not shine.neither will your bank balance.
2. If you are ignorant of the solar PV industry and the technology involved, you are exposed to the cowboy installers.
3. Always, always view personal experiences, and if possible go on recommendations from people you can trust, which is whatt I did. Talk to them and go and see their installations.