Useful links to understanding how to claim feed-in tariffs in the UK. These tariffs are available on or off grid, but may be phased out next year 2019.
BabyHydro DIY installation guide 2016 with details of how to obtain relevant consents in Scotland.
Here is a document from 2013 describing the steps to obtain Feed in Tariffs for a Powerspout in England and Wales, but now rather out of date although it may help. I am told that OFGEM now want three inputs; planning, network and EA(or latest equivalent).