Wow! 30%! Attributed to getting rid of old-style coal plants.
Of course, the US did it better:
However, the US is stupid about its coal plants. Our government wants any improvements to power plants to trigger massive overhauls of the generators. Instead of allowing power manufacturers to make their plants incrementally less polluting, Uncle Sam will only except perfection. As a result, our coal burning technology is outdated and stuck in the past. PowerLine had this up last week:
Showing how much Chinese plants have improved tremendously in the last decade, while US plants remain inefficient, polluting and stagnant.