Iceland is an unusual place. Its electricity grid is not widely connected to other countries. It has lots of geothermal energy. And it has been working hard on decarbonising (removing greenhouse gas emissions as close to zero as possible) all of its energy supply.
How far had it gone by 2012 in decarbonising its whole energy system? I'm thinking of the whole thing: electricity, heat, transport, industrial uses, the lot. I'm interested in what it's decarbonised, and how: so "how much?" is part of it, but "how?" is the larger part.