CSMAR05This paper reviews the reliability impacts occurring from the implementation of the demand response initiatives offered in New York's Emergency Demand Response Program (EDRP) and New England's Load Response Program (LRP) for the summer of 2001. The New York Independent System Operator, Inc. (NYISO), the New England Power Pool (NEPOOL) and the Independent System Operator of New England Inc. (ISO-NE) have developed and implemented a diverse portfolio of demand reduction programs designed to allow customers to avoid higher energy costs and reduce their load in response to wholesale energy prices.