Shailesh Sahay

Washington, DC
Shailesh Sahay is one of the leading energy and environmental attorneys in the nation. He comes to Foley Hoag after serving for over six years as in-house counsel to the largest renewable fuels producer in the world, and as acting general counsel of the largest renewable fuels trade association. He directs legal and policy strategy on climate, environmental, and sustainability issues at the federal, state, and international levels. As an attorney in Foley Hoag's Energy & Climate group, he represents clients in a variety of industries, helping them shape laws through legislative and regulatory advocacy, then helping them maximize value under established legal frameworks by obtaining regulatory approvals and ensuring regulatory compliance.

Shailesh's professional highlights include: 
  • Negotiating with the U.S. Environmental Protection Agency (EPA) and stakeholder consortia to increase allowable renewable fuel content in gasoline by 50%.
  • Leading a successful campaign to bring back EPA incentives for flex fuel vehicles.
  • Serving at the forefront of regulatory and legislative engagement on climate and vehicle fuel issues related to federal Renewable Fuel Standard, California Low Carbon Fuel Standards, and Clean Air Act mobile source provision.
  • Establishing a led new trade association that successfully reversed EPA’s regulation holding down renewable fuel blending in the United States Court of Appeals for the D.C. Circuit.
  • Assuming industry leadership, including by serving on the Environmental Law Institute’s Leadership Council and the Board of Directors of the Low Carbon Fuel Coalition. 


  • Harvard Law School, J.D., 2007
  • Harvard College, A.B., Earth and Planetary Sciences, 2002

Bar and Court Admissions

  • District of Columbia

Honors & Involvement

  • Leadership Council, Environmental Law Institute, Member (2017 – present)
  • Low Carbon Fuel Coalition, Board of Directors & Secretary (2019 – present)

Speaking Engagements

  • "ESG in 2022: Climate-Related Financial Risk Disclosures," Environmental Law Institute (March 2022)
  • "Environmental Cost Determination: Improving and Modernizing Cost-Benefit Analysis in Rulemaking Process," Strafford (February 2022) 
  • "Public Company: ESG," TechGC Global Summit (2021) 
  • "Advanced Biofuels: Fuel for the Future?," Environmental Law Institute Seminar (2020)
  • "Next Generation Biofuels: The View from Europe and the Americas," CERAWeek (2020)
  • "Alternative Fuels Deep Dive: Growth in Different Biofuel Categories" Argus Biofuels Live (2020)