Algonquin Gas Transmission, LLC AGT Enhancement Project

Introduction

On February 24, 2026, FERC staff approved Algonquin Gas Transmission, LLC  (Algonquin) request to enter into FERC’s Pre-filing Environmental Review Process (Pre-filing Process) for the planned Algonquin AGT Enhancement Project). More information may be found in FERC Docket NoPF26-7-000 in FERC's eLibrary. Please note that the project has not been approved at this time.

Project Name Route and Facilities 

Algonquin plans to construct and operate three interstate natural gas transmission pipeline segments totaling approximately 13.5 miles of pipeline and associated facilities in and parallel to existing Algonquin easements in Massachusetts and Rhode Island.

Specifically, Algonquin plans to replace, in the same easement, about 8.25 miles of existing 16-inch-diameter pipeline with 36-inch-diameter pipeline in Norfolk and Worcester counties Massachusetts and Providence County, Rhode Island.

Algonquin also plans to install about 2.2 miles of 12-inch-diameter pipeline parallel to an existing pipeline (looping pipeline) in Newport County, Rhode Island; and 3.0 miles of 36-inch-diameter looping pipeline in Providence County, Rhode Island. Lastly, Algonquin plans to increase compression, through certain software upgrades, at its existing Cromwell Compressor Station in Middlesex County, Connecticut. According to AGT, these facilities would increase gas supply to local distribution companies and enhance energy reliability in the Northeast.

On February 25, 2026, the Applicants submitted this Project map to the docket. To view and download this map, please visit FERC's eLibrary and search Docket No. PF26-7-000

Pre-filing Environmental Review Process 

Pre-filing is a “pre-application” phase in the overall environmental review process for interstate natural gas or liquefied natural gas projects under FERC’s jurisdiction. The Pre-filing Process is designed to identify and address environmental aspects of the project before an official application is filed. The Pre-filing Process was established to encourage early involvement by stakeholders during the design and/or routing of an interstate natural gas project.

During the Pre-filing Process, members of the public will have multiple opportunities to get involved and express their views, concerns, and issues. Those opportunities include public comment periods, applicant-sponsored open houses, and scoping sessions hosted by FERC. These opportunities will be posted in FERC’s eLibrary in Docket No. PF26-7-000.

Public Participation Opportunities

Federal law requires FERC to seek out public comments and consider them during its review of a project. Public comments inform FERC’s reviews and serve to educate decision-makers about local concerns.

Open Houses

During the Pre-filing Process, members of the public will have several opportunities to express their views, concerns, and issues with the project. The first of those opportunities are Open Houses held by Algonquin between April 22 - April 30, 2026. To find an Open House location near you, please see below the Open House schedule for dates and times.

For information on what to expect at Open Houses, visit OPP’s Natural Gas Pre-filing Open Houses: Public Participation and What to Expect handout.

More Information and Staying Updated

You may learn more about the Project through FERC’s eLibrary. When searching for the Project, please enter Docket No. PF26-7-000 in the “Enter Docket Number” text box. FERC’s Office of Public Participation provides an educational video and demonstration on using eLibrary: WorkshOPP and Demonstration: FERC’s eLibrary. 

There is one docket associated with this Project:   

• The Pre-Filing Docket: Docket No. PF26-7-000

Stay Informed:

Follow OPP on its social media channels:  

• X  
• Facebook 
• LinkedIn 
• Instagram 
• Bluesky 

OPP regularly sends announcements about upcoming participation opportunities and meetings with interested stakeholders and organizations via its social media channels.  

You may also sign up for FERC’s eSubscription service. eSubscription notifies you via email about submittals and issuances on the project. Please visit www.ferc.gov/esubscription.

You are also encouraged to contact OPP staff to learn more about the Project and participation at FERC by email at [email protected] or phone at 202-502-6595. All media inquiries should be directed to [email protected].

Resources

Guides on Public Participation 

• Step-by-step guide on how to file a comment 
• Step-by-step guide on how to intervene 

Educational Videos 

• Learn to eFile, eComment, and eSubscribe 
• How to File an Intervention Using FERC’s Online System 
• Filing Comments Workshop and Demonstration
• Submitting Powerful Comments Workshop

Tips on Public Participation 

• How to Submit Effective Comments 
• Powerful Comments 
• Filing an Intervention

Informational Handouts 

• About FERC 
• About OPP 
• Natural Gas Pre-filing Open Houses: Public Participation and What to Expect
• Natural Gas Scoping Sessions: Public Participation and What to Expect

How to Contact