ISO New England Inc. (ISO New England) is the independent, not-for-profit system operator for the six-state New England region (CT, ME, MA, NH, RI, VT). Headquartered in Holyoke, Massachusetts, it operates the high‑voltage bulk electric power system, serves as the region’s reliability coordinator, administers competitive wholesale electricity markets, and leads long‑term regional transmission planning.
Under oversight from the U.S. Federal Energy Regulatory Commission and in accordance with NERC reliability standards, ISO New England runs day‑ahead and real‑time energy markets, ancillary services, and the Forward Capacity Market. It plans transmission upgrades, manages resource interconnections, and integrates emerging resources including offshore wind, solar, energy storage, and demand response to maintain reliability and resource adequacy year‑round.
ISO New England’s market operations and planning influence power availability and costs for large energy users across the region, including chemical manufacturers and other process industries that depend on reliable, competitively priced electricity for continuous operations.
