Modeling Demand Response In New England

U.S. Environmental Protection Agency
Completed May 2003

Synapse performed a comprehensive assessment of the emissions impacts of demand response programs in New England. As ISO New England continues to refine its nascent electricity markets, there is widespread interest in facilitating demand response (DR) -- the ability for customers to respond to high prices by reducing electricity use or producing their own electricity onsite. There is also widespread interest in the net air emissions impacts of DR.

Synapse assessed the net emissions impacts of selected DR programs using the PROSYM/PROMOD dispatch model. The programs assessed included the economic DR program proposed by ISO New England for the summer of 2003, an economic DR program proposed by the New England Demand Response Initiative (NEDRI) for the summer of 2004, and several scenarios that explored key variables and uncertainties in these programs. In addition, Synapse modeled several energy efficiency programs in order to compare the emissions impacts of these programs to the DR programs. For all programs assessed, Synapse explored both the emissions impacts of DR operation and the impacts of new DR capacity on ISO unit commitment. Project completed in May 2003.