Development aid by itself cannot ‘save the planet’. Yet, development aid and institutions have the potential to remain important catalytic actors in achieving developmental and global environmental objectives. Developing countries must be crucial players in successful climate change mitigation as they are responsible for 88% of the growth in greenhouse gas (GHG) emissions since 1970. However, the current aid architecture — which was designed in the 1970s when environmental issues were a distant concern — is not well suited to support environmental challenges that extend beyond low-income countries.