He is the founding Director of Credible Carbon South Africa's first voluntary carbon market registry and a candidate registry for the Department of Minerals and Energy’s Domestic Carbon Standard.
He is affiliated to the African Centre Cities (ACC) at the University of Cape Town and a Fellow of the Cambridge Institute for Sustainability Leadership (CISL) and Cambridge University (UK). He led the New Climate Economy’s Special Initiative, the Coalition for Urban Transition’s, and in this capacity established and runs the Tanzanian Urbanisation Laboratory in Dar es Salaam and the Ghana Urbanisation Think Tank and advised local and national governments in the respective countries on infrastructure procurement programmes.
He was a lead author on Chapter 4 of the IPCC’s Special Report on of 1.5°C of warming released in 2018 and a Contributing Author to Chapter 6 of the IPCC’s 6th Assessment Report (WG2).