IF you have a solar panel on your Mh roof, AND a leisure battery charged by it you are clearly NOT a Greeniot. If, however you try and power UKPLC with a motley selection of solar panels and unreliable wind turbines, AND have no thought of storage (remember your leisure battery?) then you are a world class Greeniot.
If you have a solar panel on your Mh roof and DO NOT have a leisure battery, then the above applies!!!
Your "Pal"'s solar array is nothing of the sort, it is a SUBSIDY farm. Ask your Pal how interested he'd have been to install it were it not for the massively subsidised return he gets from the tiny and UKPLC irrelevant amount of power it generates and, then only in ideal and daylight conditions. You might also ask him that if the grass under the SUBSIDISED panels was growing so well, why he wasn't using this clearly arable land to grow FOOD?
Not a single, even subsidised wind turbine gets even close to paying for itself in a year, even at the 1.9 x wholesale price of electricity it gets from its SUBSIDY, on the rare occasion it is windy enough to generate anything of any use to UKPLC! No wind turbine has yet lasted 20+ years as you say, and none ever will, the maximum life that can be expected is 10 to 15 years , but the subsidy is so high that 100% replacement cost within the 25 yr subsidy life is easily affordable.
Perhaps a daily or weekly visit to G. B. National Grid status might let you see the real story of how UKPLC energy is organised.!
Hard hat now on, Greeniots are a weird bunch.........................................!!!! !!!!