From North American Electric Reliability Council May 2003 Reliability Summer Assessment

Assessment Summary Generating resources are expected to be adequate to meet projected demand for electricity in North America this summer. However, there are some areas of concern in NPCC: southwestern Connecticut, New York City and Long Island. Locally tight resources compounded by transmission limitations into and within those areas make them particularly susceptible to reliability problems that can be caused if there is lower than expected generating unit availability, or high demand caused by extreme weather. Even in areas where resources are expected to be adequate, unanticipated equipment problems and extreme weather can combine to produce situations in which demands temporarily exceed available generation and transmission capacity.