We had some bloke round today representing "Allianz" with some patter about being appointed by the judiciare about our existing installation. I rather think this is some outfit who reckons that if you phone up the average householder with an existing installation then you will find that enough of them say their installation has some deficiencies that you can get your foot in the door.
Our installation is 14x180W = 2520 Wc, it's 5 years old and it yields now about 3000kWH annually (so it's paid its way and we are now in profit hurray). We are in Languedoc and the orientation is good.
1 the output could be improved by changing to one inverter per panel instead of one big inverter situated about 15m from the nearest panel 30m from the furthest. I can sort of believe that, although by how much I have no real idea (he said 20-30%)
2 A new guarantee covering everything for 25 years (yeah yeah), which will magically repair the roof leak left by the clodhopping installers 5 years ago.
3 We are eligible again for a credit d'impot for energysaving installation (it's 5 years and 3 months since the original installation)
4 Not to miss a trick he's also trying to flog us a solar water heating thingy - last i knew the price in France was completely uneconomic
5 Not to miss another trick he's also trying to flog us an extra few panels to power the house during the day independently of EDF - I'd be amazed if this was economic
When I get the devis I can say more, but in the meanwhile I know there's some good expertise here, some advice would be nice please?