Most of the UK's renewable energy comes from Scottish wind and tidal farms. Almost all energy-based corruption (I count giving public money in any form to the coal industry as corruption at this point, given all we know) comes from the UK Government. The Scottish Government is no angel either though: they refuse to outright-ban fracking (there's an indefinite moratorium on fracking in Scotland though, which is better than nothing) and they are not serious about keeping north sea oil in the ground.