Anyway this is a nice little micro-renewables project. http://orkneymicrorenewables.com/
The whole concept of sustainability is to ensure each community meets its needs, and can then contribute to a wider 'vision' of connected enablement. Surplus power generated on orkney can add to the grid. To power a grid requires a considerable amount of contributors each sending a surplus to the greater need of people who can't produce power for themselves. However large communities need to downscale their use of power in needless wastage.
Forget the illuminated signs and get some illuminated thinking going on.
In order to 'store' energy, one of the best ways is to pump seawater into holding lakes at altitude and run turbines in series down a hillside, then re-pump the water in low peak times back up to the top of the mountain. AKA tower of Babylon!
They did it with cast bronse archimedies screws, I am sure a hippo pump would be just as effective.
By the way, if cows can be trained to go onto a walk on walk off milking machine, I am sure they can be trained to poo in a shed, so long as the poo ends up in a slurrysluice it can go directly into a bio-digester, et voila, the whole process becomes mechanised. Believe me a cow is worth more for poo than it is for milk or meat when it comes to bio methane.
Think how many income streams from methane conversion to hydrogen, fertiliser, and just plain methane gas straight into the pipelines (as it is compatible with drilled gas) could make to the overall reversal of our dependence on fossil fuel.
Just because i like a can do day. Also with vision, we will resolve the problems our dependence on the few who make decisions behind the smokescreen of expediency, make for the many who have never been asked for their opinions or preferences before.
There is never a shortage of money, just the will to resolve the issues, and make the technology and benefit available to the wider world as oppsed to the heirachy of power and preserve.