Jan Mares

Senior Advisor

Jan W. Mares became a Senior Advisor with Resources for the Future in May 2009 where he is involved with work on energy and environmental issues. Previously he was a Business Liaison Director with the Private Sector Office of the Department of Homeland Security (DHS) from May 2003 until January 2009. The last several years he was the Deputy Director. The function of the Office is to promote, encourage and monitor collaborative relations between the private sector and the Department regarding homeland security issues. A large part of Office’s effort was to promote collaboration between DHS and associations and companies that are in the critical infrastructure and key resource sectors.

During the second term of the Reagan Administration, Mares was an Assistant Secretary of Commerce for Import Administration for about a year, and a Senior Policy Analyst at the White House for two and one half years, where he was involved with environment, energy, trade and technology issues. From 1981 to 1985, Mares also served as Assistant Secretary of Energy for International Affairs and Energy Emergencies, Assistant Secretary of Energy for Policy, Safety and Environment, and Assistant Secretary of Energy for Fossil Energy. For six months he was the Acting Under Secretary of Energy.

Before entering Federal service, Mares was with Union Carbide Corporation for about 18 years. About nine years were in the Law Department, where he worked on antitrust compliance and purchasing issues as well as spending seven years on issues involving Union Carbide’s overseas activities and became the International Counsel. The other nine years involved business responsibilities in the chemicals area. They included leading an effort for three years to create a chemicals joint venture with a Middle East government company and being the operations/profit manager for several groups of industrial chemicals. From early 1980, until joining the Department of Energy in 1981, he was Vice President-General Manager of the Ethylene Oxide Derivatives Division.

Subsequent to the Reagan Administration, Mares worked with Shaw Pittman (a Washington DC law firm), the Synthetic Organic Chemical Manufacturers Association, and the EOP Group (a Washington DC environment, energy and budget consulting firm).


  • LLB, Harvard Law School, 1963
  • MS in chemical engineering, Massachusetts Institute of Technology, 1960
  • AB in chemistry, Harvard College, 1958

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