I have been looking at long-term trends in grid electricity carbon coefficients (i.e. how much CO2 is generated across the whole electricity system to produce a given amount of power). This is a good overall indicator of the sustainability of the electricity system in a country from a climate point of view, and is determined by the fuel mix.
The trends for the UK and Germany since 1990 (shown in grams of CO2 per kWh – data are from the International Energy Agency) are interesting: Continue reading