> Interestingly, Eigg, a small hebridean island off the west coast of Scotland has been operating 95% of their power on renewables
Renewable, but mostly as hydro.
Things are easier when you have large hydro (relative to your needs), Iceland's electrical production has been 100% renewable since 2008 (and was 99.9% renewable before that) because they have a ton of hydro (80% of total capacity), and a fair amount (and growing) of geothermal (geothermal is 2/3rd of their energy consumption but the vast majority is direct use for heating, not electricity generation). And note that ~70% of Icelandic electricity generation is solely for aluminum production.
Renewable, but mostly as hydro.
Things are easier when you have large hydro (relative to your needs), Iceland's electrical production has been 100% renewable since 2008 (and was 99.9% renewable before that) because they have a ton of hydro (80% of total capacity), and a fair amount (and growing) of geothermal (geothermal is 2/3rd of their energy consumption but the vast majority is direct use for heating, not electricity generation). And note that ~70% of Icelandic electricity generation is solely for aluminum production.