- Founder and Director, Center for Global Sustainability, University of Maryland
- Lead Author, America’s Pledge Initiative on Climate, 2018 and 2019 reports; America’s Pledge project co-lead
- Served in Obama White House, Council on Environmental Quality; helped develop U.S. 2025 climate target; engagement and input for Paris Agreement
Nate Hultman is the Founder and Director of the University of Maryland Center for Global Sustainability, and Professor in the School of Public Policy. He is currently on leave, serving as a Senior Advisor in the Office of the Special Presidential Envoy for Climate at the U.S. Department of State.
Hultman’s research focuses on assessing and developing national climate strategies, combining quantitative assessment and modeling with policy development and engagement. This includes U.S. emissions mitigation policy including the role of non-federal actors, rapid and structured coal phaseout strategies in diverse national contexts, as well as economy-wide strategies in other major economies, with a focus on China as well as Brazil, India, Indonesia, and others. He was lead author of several recent assessments of U.S. national emissions mitigation strategies in advance of the announcement of the U.S. 2030 climate target (NDC). From 2014-2016, Hultman worked at the White House on the Obama Administration’s climate and energy policy team. During this time, he helped develop the U.S. 2025 NDC, worked on bilateral engagements with China, India, Brazil and others, and participated in the international climate negotiations in Lima and Paris. He has participated in the UN climate process for nearly 25 years.
When not on leave, Hultman is also a nonresident senior fellow at the Brookings Institution, and associate director of the Joint Global Change Research Institute, a collaboration between the University of Maryland and the Pacific Northwest National Laboratory. He was formerly a visiting fellow at the University of Oxford, a Fulbright fellow, and a NASA Earth Systems Science fellow. He holds an M.S. and Ph.D. in energy & resources from the University of California, Berkeley, and a B.A. in physics from Carleton College
- Climate change; energy policy; US federal climate policy
Our work at CGS builds a model integrating engagement, analysis, and multi-level governance that can provide the driving force for enhanced ambition.
Learn More about Analytics for Global Climate Ambition
CGS is taking a leadership role in research to advance collaborative, innovative climate action and policy through the third installation of its America’s Pledge: expanding our unique research and analysis, strategic engagement and communications to inform the US strategy leading up to 2030.
Learn More about America’s Pledge: Building a Comprehensive American Climate PolicySchool Authors: Gokul Iyer, Leon Clarke, James 'Jae' Edmonds, Nathan Hultman, Yiyun 'Ryna' Cui, Sha Yu, Haewon McJeon
Other Authors: Yang Ou, Allen A. Fawcett, James R. McFarland, Matthew Binsted, Claire Fyson, Andreas Geiges, Sofia Gonzales-Zuñiga, Matthew J. Gidden, Niklas Höhne, Louise Jeffery, Takeshi Kuramochi, Jared Lewis, Malte Meinshausen, Zebedee Nicholls, Pralit Patel, Shaun Ragnauth, Joeri Rogel J., Stephanie Waldhoff
School Authors: Yiyun 'Ryna' Cui, Leon Clarke, Nathan Hultman
Other Authors: Diyang Cui, Camryn Dahl, Claire Squire
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Alicia Zhao, Yiyun 'Ryna' Cui, Shannon Kennedy
Other Authors: Kevin Kennedy, Wendy Jaglom, Erin Bridgwater, Randall Mendell, Haley Leslie-Bole, Lanie Rowland, Emily McGlynn, Tansy Massey-Green, Tom Cyrs, John O'Neill, Rebecca Gasper, John Feldmann, Kowan O'Keefe
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Yiyun 'Ryna' Cui, Shannon Kennedy, Alicia Zhao, Jenna Behrendt
Other Authors: John O'Neill
School Authors: Nathan Hultman
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Alicia Zhao, Jenna Behrendt, Yiyun 'Ryna' Cui
Other Authors: Kevin Kennedy, Tom Cyrs, John O'Neill, Wendy Jaglom , John Feldmann, Kowan O'Keefe
School Authors: Nathan Hultman
Other Authors: Sander Chan, Idil Boran , Harro van Asselt, Paula Ellinger, Miriam Garcia, Thomas Hale, Lukas Hermwille, Kennedy Liti Mbeva, Ayşem Mert, Charles B. Roger, Amy Weinfurter, Oscar Widerberg, Paulette Bynoe, Victoria Chengo, Ayman Cherkaoui, Todd Edwards, Malin Gütschow, Angel Hsu, David Levaï, Saffran Mihnar, Sara Posa, Mark Roelfsema, Bryce Rudyk, Michelle Scobie, Manish Kumar Shrivastava
School Authors: Yiyun 'Ryna' Cui, Nathan Hultman, Haewon McJeon, Sha Yu, Morgan Edwards, Christina Bowman, Leon Clarke, Jiehong Lou, Mengye Zhu
Other Authors: Diyang Cui, Arijit Sen, Kaihui Song, Junjie Kang, Fuqiang Yang, Jiahai Yuan, Weirong Zhang
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Yiyun 'Ryna' Cui, Alicia Zhao
Other Authors: Pete Hansel, Emily McGlynn, Kowan O'Keefe, John O'Neill, Celeste Wanner
School Authors: Nathan Hultman
Other Authors: Samantha Gross
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Yiyun 'Ryna' Cui, Alicia Zhao
Other Authors: Pete Hansel, Emily McGlynn, Kowan O'Keefe, John O'Neill, Celeste Wanner
School Authors: Nathan Hultman, Leon Clarke
Other Authors: Kevin Kennedy, Tom Cyrs, Wendy Jaglom , Carla Frisch , Andrew Light
School Authors: Yiyun 'Ryna' Cui, Nathan Hultman
Other Authors: Maureen Cropper, Sarath Guttikunda, Puja Jawahar, Yongjoon Park, Xinlu Yao, Xiao-Peng Song
School Authors: Yiyun 'Ryna' Cui, Nathan Hultman, Haewon McJeon
Other Authors: Jon Sampedro, Steven J. Smith, Linlang He, Arijit Sen, Rita Van Dingenen, Ignacio Cazcarro
School Authors: Jiehong Lou, Sha Yu, Jiawei Song, Nathan Hultman
Other Authors: Jessica Frech
School Authors: Leon Clarke, Sha Yu, Yiyun 'Ryna' Cui, Nathan Hultman, Jiehong Lou, Jiawei Song
Other Authors: Sha Fu, Xuan Du, Zhenhua Feng, Xuecheng Wang, Lingyan Chen, Zhuoxiang Yang, Junling Liu, Li Yang, Nicklas Forsell, Fei Guo, Volker Krey, Minpeng Chen, Ke Wang, Qimin Chai, Qiang Zhang
School Authors: Nathan Hultman
School Authors: Nathan Hultman
Other Authors: Thomas Hale
School Authors: Nathan Hultman, Leon Clarke, Haewon McJeon, Morgan Edwards, Yiyun 'Ryna' Cui, Christina Bowman, Jiehong Lou
Other Authors: Carla Frisch , Kevin Kennedy, Tom Cyrs, Pete Hansel, Paul Bodnar, Michelle Manion , Jessie Lund , Michael I. Westphal, Andrew Clapper , Joel Jaeger , Arijit Sen , Devashree Saha, Wendy Jaglom, Koben Calhoun, Kristin Igusky, James deWeese, Kareem Hammoud, J.C. Altimirano, Margaret Dennis, Chris Henderson, Gill Zwicker, John O'Neill
School Authors: Sha Yu, Yiyun 'Ryna' Cui, Haewon McJeon, Nathan Hultman, Leon Clarke
Other Authors: Brinda Yarlagadda
