Reducing greenhouse gas emissions in the world's two largest countries requires feasible governance pathways that integrate politics, policy and administration. Using examples of successful mitigation at the local level in China (Guangzhou) and India (Gujarat), this article identifies integrated governance solutions that work in both cases through different types of linkages. In China, it is mainly intra-governmental linkages, while in India it is mainly state–society linkages. In neither case do international negotiations concerning emissions targets have significant effects, while national frameworks have only marginal effects. Approaching the problem in this comparative manner helps to clarify how greenhouse gas governance operates in each country, the lessons for central–local environmental relations, and the implications for international assistance.