Daniel Kammen
Dr. Daniel Kammen is The Bloomberg Distinguished Professor of Energy and Climate Justice at Johns Hopkins University. He has appointments in the Department of Civil and Systems Engineering (CASE) and at the Paul Nitze School of Advanced International Studies (SAIS). He is part of the leadership team of the Ralph O’Connor Institute of Sustainable Energy (ROSEI).
His work is focused on decarbonization, energy access, and climate justice. He has served as Senior Advisor for Energy and Innovation at the US Agency for International Development (USAID). Kammen is a Coordinating Lead Author for the IPCC. He is the Co-Chair of the UC Berkeley Roundtable on Climate and Environmental Justice (http://ceej.berkeley.edu).
Kammen was appointed the first Environment and Climate Partnership for the Americas (ECPA) Fellow by Secretary of State Hilary R. Clinton in April 2010 and served as Science Envoy for Secretary of State John Kerry (2016- 2017).
Kammen has published more than 500 papers, which are available on his laboratory website, the Renewable Energy and Equity Worldwide [RENEW] Laboratory). His research is focused on: decarbonization of power systems around the world; energy access and social justice; materials science for low-carbon economies; big-data approaches to clean transportation, and on the electrification of health facilities across Africa (HETA).
Kammen has founded or is on the board of over 10 companies, and has served the State of California and US federal government in expert and advisory capacities. Kammen was the First Chief Technical Specialist for Renewable Energy and Energy Efficiency at the World Bank
(2010 – 2011).
Kammen was educated in physics at Cornell and Harvard, and held postdoctoral positions at the California Institute of Technology and Harvard. Before moving to the University of California, Berkeley, he was Assistant Professor and Chair of the Science, Technology and Environmental Policy Program at the Princeton School of Public and International Affairs. He has been at Johns Hopkins since 2025.
Kammen has served as a contributing or coordinating lead author on various reports of the Intergovernmental Panel on Climate Change since 1999. The IPCC shared the 2007 Nobel Peace Prize.
Kammen serves on the Advisory Committee for Energy & Environment for the X-Prize Foundation. He is on the board of Native Renewables (Flagstaff, AZ); the Chabot Space and Science Center (Oakland, CA), The Human Needs Project/Kibera Town Center (Nairobi, Kenya).
Kammen was elected to the American Academy of Arts and Sciences in 2020, and to the U. S. National Academy of Sciences in 2025.