This article assesses the contributions of public-private partnerships, understood as a specific type of networked climate governance, to effective and legitimate climate governance. The appraisal of networked governance in the climate change arena is based on three sets of criteria. First, their potential contribution to effective climate change mitigation and adaptation; second, their contribution to broader political goals such as increased participation and inclusiveness in global environmental governance; and third, their linkages and fit with the existing institutional architecture of international climate change governance. I conclude with a set of questions for future research. © 2010 John Wiley & Sons, Ltd.