In a recent Concept Note,1 Benito Müller put forward the idea of a Southern Solidarity Fund (SSF) to receive voluntary contributions from developing countries for South-South climate change cooperation. It is meant to be established by the Conference of the Parties (COP) of the UN Framework Convention on Climate Change (FCCC or Convention) with a developing country Board, and to be operated by the Green Climate Fund (GCF), as an operating entity of the FCCC financial mechanism. As such, it is meant to give developing countries ‘the opportunity to provide support to their peers for climate change activities’2 which ‘should be able to avail itself of the best available delivery systems, such as is hoped will be established under the Green Climate Fund, in particular through Enhanced Direct Access, where operational decision-making is devolved to recipient countries.’