Jason MacDonald, a Senior Scientific Engineering Associate at Lawrence Berkeley National Laboratory, has focused his career in distributed energy resources. As a member of the Grid Integration Group in the Environmental Energy Technologies Division at LBNL, Jason researches fast, automated demand response for bidding into bulk power system ancillary service markets. This work includes analyses of market and policy barriers to DR’s market entry into ISO/RTO markets, the development of mathematical models for demand response availability and pilots to test control paradigms for resource aggregation of thermostatically controlled loads and PEVs for AS participation. Prior to joining LBNL, he pursued his graduate work in Mechanical Engineering and Sustainable Systems in the University of Michigan’s Engineering Sustainable Systems dual degree program. As a student researcher, Jason examined the electricity consumption profile, fleet marginal electricity demand and environmental impacts of PEVs. He has held positions as a system engineer for a photovoltaic integrator in Southern California, and as a systems integration engineer on the Chevy Volt powertrain at General Motors.