The REO describes the major transformation happening in New England, and how the ISO is working to solve challenges to ensure a modern, reliable power system. For updated facts and statistics cited in the REO, view our Key Grid and Markets Stats pages.
Watch a trio of videos detailing the work being done behind the scenes at ISO New England to weave wind energy into our operations, markets, and system planning procedures.
Get an overview of the effects that solar photovoltaic (PV) systems have on demand from the regional power system and how the ISO is handling related challenges.
The ISO and its stakeholders are working on a three-part market based approach to solving energy-security issues over the long term: a multi-day ahead market, new ancillary services, and seasonal forward procurement.
Get the basics on how electricity gets to New England’s homes and businesses.
Electricity is measured in both capacity and energy watts and watt-hours. Understanding the difference is critical to understanding how the power grid works.
A dependable flow of electricity is priority number one for the ISO. Learn what this means from both a practical and technical perspective.
Watch short videos that explain how load ramping, voltage, and frequency help maintain power grid reliability—and how they’re affected by the increasing penetration of variable generation. The videos are presented by the North American Electric Reliability Corporation (NERC).
Get an overview of the ISO’s regulatory environment and stakeholders in its role as Regional Transmission Organization (RTO) for New England.
How industry restructuring and ISO innovation have helped transform the regional electricity industry and revitalize New England’s power system
Learn about the intensive work that goes into developing and documenting compliance with standards that help ensure the reliable operation of the power grid.
How the ISO is protecting against cyberthreats to ISO systems that could affect the operation of the power system or wholesale electricity marketplace
The ISO’s varied roles and responsibilities require a broad spectrum of professionals in a highly competitive industry.
Learn how the ISO funds its operation, develops its annual budgets, and determines its yearly service rates for customers.
Key facts and figures on regional demand growth, resource mix, transmission development, and prices.
Key facts and figures on demand growth, resource mix, and environmental goals for each New England state.
Your electricity needs never stop, and neither does the ISO. Download this booklet for a “tour” of our state-of-the-art control room and an overview of how the ISO’s system operators keep electricity supply and demand in near-perfect balance every minute of the day.
How the region’s inadequate natural gas delivery infrastructure affects the ability of natural-gas-fired plants to get the fuel they need to perform, affecting reliable operation of the power system
Why New England is losing large amounts of coal- and oil-fired and nuclear generating capacity, and how this affects operation of the power system
Read about how ISO innovation and stakeholder collaboration enabled the electronic dispatch of the region’s wind and intermittent hydro resources for the first time in 2016, allowing these resources to become eligible to set real-time wholesale electricity prices.
Learn how the ISO takes steps to help protect the power grid in the event of predicted geomagnetic disturbances caused by solar events.
Learn how the ISO uses weather forecasts in formulating electric demand estimates.
Learn how ISO New England plans for the region’s energy use on this not-so-typical Thursday morning.
Read about how the ISO creates forecasts of New England’s electricity needs.
Learn how temperature and other factors affect the grid—and the actions the ISO takes when electricity demand is outpacing supply.
Get the basics on how wholesale prices affect retail rates, and how you can spot these in your retail electricity bill.
The goal of energy markets is to provide reliable wholesale electricity at competitive prices. The markets accomplish this goal using two core mechanisms: economic dispatch and uniform clearing price.
Download this two-page overview of the purpose, structure, operation, and effectiveness of the region's wholesale electricity marketplace.
The region’s transmission owners develop transmission rates in New England—learn more.
Read about the most widespread outage in our nation’s history and what’s been done to prevent a repeat.