How many natural gas power plants are in ISO-NE?

There are 111 operating natural gas power plants in ISO-NE.

What is the total natural gas capacity in ISO-NE?

The total operating natural gas capacity in ISO-NE is 16,700 MW.

What is the largest natural gas power plant in ISO-NE?

The largest natural gas power plant in ISO-NE is Fore River Generating Station at 872 MW, located in Norfolk, Massachusetts.

Natural Gas Power Plants in ISO-NE

Explore the largest natural gas power plants in ISO-NE and see all the utility-scale natural gas projects in ISO-NE on a map.

Last updated: May 2026

On this page, you can explore our real-time database of natural gas power plants in ISO-NE. Each month, we track natural gas projects and update our list of the largest natural gas power plants in ISO-NE.

As of May 2026, there are 111 utility-scale natural gas power plants in ISO-NE, according to Cleanview's project tracker. Their total operating capacity is 16,700 MW. See also: planned natural gas power plants in ISO-NE→

Total Natural Gas Power Plants

111

Total Capacity

16,700 MW

Built in 2025

ISO-NE Natural Gas Map

Map of natural gas power plants in ISO-NE. Marker size reflects capacity — only facilities with reported capacity data are shown.

Largest Natural Gas Power Plants in ISO-NE

Fore River Generating Station

872 MW

Year Operational: August 2003

Location: Norfolk, Massachusetts

CPV Towantic Energy Center

842 MW

Year Operational: May 2018

Location: New Haven, Connecticut

Lake Road Generating Plant

840 MW

Year Operational: May 2002

Location: Windham, Connecticut

Salem Harbor Power Development LP

798 MW

Year Operational: May 2018

Location: Essex, Massachusetts

Granite Ridge

790 MW

Year Operational: March 2003

Location: Rockingham, New Hampshire

Kleen Energy Systems Project

693 MW

Year Operational: July 2011

Location: Middlesex, Connecticut

Newington Energy Center

606 MW

Year Operational: October 2002

Location: Rockingham, New Hampshire

Rhode Island State Energy Center

596 MW

Year Operational: October 2002

Location: Providence, Rhode Island

Milford Power Project

578 MW

Year Operational: May 2004

Location: New Haven, Connecticut

Recently Built Natural Gas Power Plants in ISO-NE

MMWEC Simple Cycle Gas Turbine

65 MW

Year Operational: July 2024

Location: Essex, Massachusetts

Derby Fuel Cell

14 MW

Year Operational: January 2024

Location: New Haven, Connecticut

Stamford Health

2 MW

Year Operational: March 2023

Location: Fairfield, Connecticut

Stamford Health Tully Health Center

1 MW

Year Operational: January 2023

Location: Fairfield, Connecticut

Subase Microgrid Project

7 MW

Year Operational: December 2022

Location: New London, Connecticut

Naval Sub Base New London Fuel Cell

7 MW

Year Operational: December 2022

Location: New London, Connecticut

Norton Powerhouse 2

5 MW

Year Operational: November 2022

Location: Worcester, Massachusetts

Yale New Haven - New London

2 MW

Year Operational: September 2022

Location: New London, Connecticut

Generate Colchester Fuel Cells, LLC

10 MW

Year Operational: October 2021

Location: New London, Connecticut

Frequently Asked Questions

How many natural gas power plants are in ISO-NE?: There are 111 operating natural gas power plants in ISO-NE.
What is the total natural gas capacity in ISO-NE?: The total operating natural gas capacity in ISO-NE is 16,700 MW.
What is the largest natural gas power plant in ISO-NE?: The largest natural gas power plant in ISO-NE is Fore River Generating Station at 872 MW, located in Norfolk, Massachusetts.

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