After ten years as a minor pilot project, China’s Carbon Emission Trading Trial is set to expand several times over, and to extend its geographical reach over the whole nation, from a variety of minor local schemes. You could say that two milestones have been passed – the first time for the nation that market forces have been brought to bear at such scale on emissions, beyond mere subsidies for renewable energy, and the first time that responsibility for emissions has been imposed on business, where previously that responsibility rested solely with the state. According to the Measures for the Management of Carbon Emission Trading (Trial) issued by the Ministry of Ecology and Environment, if a company emits more than…