My son who has also recently had it installed by EEC Solar, recommended the whole idea of Solar PV and I must say it is a fantastic idea as not only do I get a feeling of being Green but also I make money out of it!! I now have 16 panels and at a cost of approx £6500. I have an income of approx £450 from the Feed in Tarif ( FIT ) as well as an unknown smaller figure from my savings in electricity bills. With current low interest rates ( 0.5% ) this is a very good investment ( min 8% with no tax ) if you have spare cash ( pension lump sum ). EEC were extremely helpful and organised the essential D band rating EPC certificate ( this is necessary to get a satisfactory FIT ). The installation took one day and the fitters were very pleasant and efficient. There was one panel which needed correction which they did within a week with no pestering ( in fact they told us by reading the Solar Edge results at their end that it needed doing ). I would recommend the Solar Edge extra ( approx £800 ) as it gives you more power if there is any shading and also gives you a fantastic display on your computer of the power generated by each panel everyday with graphs of output on a monthly weekly or daily basis. So far I have had it 2 weeks and have generated 100 KWH ( approx £20 overall value ) in mid March when we have had at 50% of the weather very cloudy.