The interaction between energy and the environment has been recognized for some time, but increasing focus is being placed on the feedback mechanisms between the two as local/regional and federal governments address the issue of regional pollution and global climate change, respectively. In Los Angeles the continued severity of the air pollution problem has stimulated renewed efforts to significantly curtail emissions to meet the health-related air quality standards. This paper provides an overview of the ambient air quality in Los Angeles, the impact of previous emissions control strategies, and the additional reduction in emissions required to meet the health-related air quality standards (Air Quality Management Plan, 1991) The paper focuses upon the role of clean technologies such as the fuel cell to effect the emissions reductions required. Finally, there is a discussion of the demonstration programs, planned or underway, with fuel cells and related technologies in the South Coast Air Quality Management District (SCAQMD), followed by some comments on the regulatory and legislative actions underway to stimulate new technologies.