Worth noting that this is a "comment is free" article, which is basically the Guardian's sanctioned area for trolling their right-on readership.
"Green energy is only possible for tiny countries that suffer from global warming and even then not really" is a fine bit of trolling and I salute the author's skill in this game.
The W3C has Annotea, but they never got widespread browser support. I know I actually downloaded Amaya at one point, presumably in hopes of trying Annotea.
Fossil fuel for electricity. Transport is a comparable energy consumer and overwhelmingly fossil fuel based. In cooler climates the same is true for space heating.
[1]http://www.sciencealert.com/costa-rica-powered-with-100-rene...