I’m far from convinced that Hydro schemes around Glen Coe are a great idea.
However,
In 2012 there was even a press release claiming that 100% of Scotland's homes would be hydro powered by 2017.
I’ve never heard of this claim. Which is quoted by pony23 quoting a ‘letter in the paper’ from ‘somebody’.
In 2017 Scotland's hydro generated 5.4 TWh, and Scotland's homes consumed 9.8 TWh. So 55% of Scotland's homes were powered by hydro. Not 100%.
This is obviously complete nonsense. The main source of energy is my house, like a great many houses across Scotland is gas.
As for electricity according to
http://www.hi-energy.org.uk/renewables/hydro-energy.htm Hydro power produces about 12% Scotland’s electricity. And there is plenty of scope for increasing that figure.
Renewables, according to
https://www2.gov.scot/Resource/0054/00541605.pdf generated 54% of Scotland’s electricity in 2015.
Scotland is making great progress in terms of moving to renewables for electricity production.
However electrcity is just one energy source. We are, as my wee hoose demonstrates, still very much dependant on oil and gas the for bulk of our day to day energy.