ISO New England is a regional transmission organization (RTO), serving Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont. ISO New England meets the electricity demands of the region's economy and people by fulfilling three primary responsibilities:
• Minute-to-minute reliable operation of New England's bulk electric power system, providing centrally dispatched direction for the generation and flow of electricity across the region's interstate high-voltage transmission lines and thereby ensuring the constant availability of electricity for New England's residents and businesses.
• Development, oversight and fair administration of New England's wholesale electricity marketplace, through which bulk electric power has been bought, sold and traded since 1999. These competitive markets provide positive economic and environmental outcomes for consumers and improve the ability of the power system to meet ever-increasing demand efficiently.
• Management of comprehensive bulk electric power system and wholesale markets' planning processes that address New England's electricity needs well into the future. – less