Stephen D. Comello

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Stephen D. Comello is Executive Vice President at EFI Foundation and Executive Director of the Nuclear Scaling Initiative.


Comello leads cross-cutting efforts to accelerate the deployment of clean energy technologies and advance innovative financing mechanisms to support a next-generation energy system. His expertise spans techno-economic analysis, policy and project finance, innovation systems, corporate strategy in the energy transition, and the industrialization of emerging clean energy technologies. 

Comello previously served as a faculty member at the Stanford Graduate School of Business for over a decade, co-leading the Rapid Decarbonization Initiative and research programs on energy innovation and technology commercialization.  

At Stanford, he held leadership roles in various research initiatives and industrial affiliate programs. He has authored numerous publications in energy policy, industrial organization, project finance, development economics, innovation management, and carbon accounting. 

In his early career, Comello worked across the energy and environmental sectors on technology deployment, market design, and large-scale infrastructure development. 

Comello holds bachelor’s and master’s degrees in mechanical and industrial engineering from the University of Toronto and a PhD in civil and environmental engineering from Stanford University. Originally from Canada, he now resides in Washington, D.C. 

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