The New York Independent System Operator (NYISO) released two new reports this week that examine the evolving challenges of maintaining reliability of the high voltage electric system.
First, NYISO released its third-quarter Short-Term Assessment of Reliability (STAR), which studies electric system reliability over a five-year period from July 15, 2025, through July 15, 2030. It identifies reliability violations in New York City and Long Island beginning in the summer of 2026. The violations are driven by generator deactivations, increasing consumer demand, and transmission limitations.
The reliability needs identified by the STAR in New York City and Long Island are based on a deficiency in transmission security. Transmission security analysis tests the ability of the power system to withstand disturbances, such as electric short circuits or unanticipated loss of a generator or a transmission line, while continuing to deliver electricity during peak demand…