We have never been unable to generate because of rain clouds , I too live in a wet par of Wales slightly to th right onth edge of the Amman Valley , we get plenty of rain that comes from sea air currents laden with moisture being pushed up to come down as rain when ever there is wind from the Se going round to the NW of us . The last quarter of last year is the lowest amount we've earnt so far for the panels ( £ 47) the highest was just over £ 158 Our set up was paid itself about 15 months earlier than the calculations made by the sales engineer suggested it would pay for itself . It appears that because of perfect siting/orientation we generated 18 % above the average for the area. Plus we use what's generated to the best of our advantage .
We also have a massive solar farm on a former open cast coal mine about 600 mtr to the SSE of us & a single big turbine 700 mtrs to the SSW of us owned by a local business .
The likelihood of off shore turbines not having enough wind to generate is extremely low for it is the wind that makes the waves if you've ever heard of the whole sea around the UK being like a sheet of glass I'd love you to tell me where to locate the details .
In the mean time I'll keep my eye out for three wise men and a virgin in Swansea ..you never know .
Once you get above 20 mtrs there is enough air movement to turn most turbines albeit some might be very slow . At 90 mtrs there will rarely be insufficient .. but that's where the smart grid is being directed .. that and most domestic dweling havig their own individual power walls to store power that can be inverted for the householders own use of sold back to the grid . .
Join a website called " All about circuits . com and take a couple of" Mooc's " off the EDX .com site to bring you upto speed with the energy situation
Well you wouldn't find a single study , there's thousands of them done globally , sort of being " Like the elephant in the room " .
Perhaps if you look at things from a different angle it might make much more sense to you.
We appear to need to move fairly quickly from carbon fuel burning to something less polluting till newer better even less polluting ones become viable and with a better production over 24/7 & better resource security .
That's much more what it's all about rather than playing constipated mathematicians & working it out with a pencil in kw hr & £ then trying to compare it like for like when the real comparisons is as much to do with not having to relying for ever on depots for polluting fuels .
Lots of the former east Germany dorfs & small towns have wind and solar panel farms for their electricity . Holland has thousands of wind turbines in their off shore wind farms
Pop over to Germany not only do they use hydro power , down towards the south there is a place called Palz & another called Elbe Zee Palz has dozens of turbines and Elb Zee thousands up on thousands of solar heat & solar PV panels. They all prize clean air & realise it does not come cheap .
If you look into things you'll also find that France , Spain , Arab states etc are putting in zillions of sq mtrs of reflected sun panels to generate power ..they are hoping to export the electricity to places like the UK if we haven't enough at the right time .
Well last summer the 2 windfarms near where I now live in Brechfa didn't turn a blade in weeks!
Plenty of sun of course.
But they don't seem to do much at all. Far less wind here than there was in the Brecon Beacons - and less rain as well.