Key quote: “There are many among Amazon’s senior engineers who think blockchain is a solution looking for a problem.”

AWS Blockchain

I agree.

According to this data 43.4 % of Scotland's electric consumption is from nuclear and fossil fuels. I think they are using those firm sources to backup intermittent renewable and not counting significant electric exports fairly.

Source: https://scotland.shinyapps.io/sg-energy/?Section=RenLowCarbon&Subsection=RenElec&Chart=ElecConsumptionFuel

In other words, renewables produced electricity equivalent to 97.4 % of domestic consumption, not 97.4 % of all electric production. Elsewhere on that web site you can see that Scotland has a relatively insignificant amount of energy storage. Without lots of storage, it's not possible to meet 97.4 % of demand without significant conventional backup power.

Read about another RF power delivery system (Energous) here: https://liesandstartuppr.blogspot.com/search/label/energous . There is a lot to wade through, but bottom line, terrible efficiency and if power delivered is high enough to be useful for anything sizable (like a phone) there are real safety concerns.