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New Projects - U.S.

Algonquin Incremental Market (AIM) Project

The Algonquin Incremental Market (AIM) Project is bringing diverse domestic natural gas supplies into the Northeast to provide homes and businesses with an affordable, environmentally friendly energy source to meet regional demand.

AIM Project map
  •   Project Path
  •   Regional Supply Path
  •   Texas Eastern Transmission
  •   Algonquin Gas Transmission
  •   Station
  •   City
  • Project Status

  • Evaluation
  • Signed Agreements
  • Regulatory Review
  • Regulatory Approval
  • Under Construction
  • In-Service

Algonquin has signed long-term contracts for all of the project’s capacity, beginning in November 2016, with ten shippers – eight southern New England local distribution companies and two municipal utilities that deliver natural gas to their respective service areas in Connecticut, Massachusetts and Rhode Island. Each of the contracts was approved or has been evaluated by each shipper’s state regulatory commission or municipal authority process, which cited that the shipper contracts are in the public interest. There are no Maritimes & Northeast Pipeline Company deliveries involved with the AIM Project.

The AIM Project is not designed for nor will the project be used to transport natural gas for export as liquefied natural gas (LNG). The additional supplies will be used exclusively within southern New England.



The Federal Energy Regulatory Commission (FERC) exclusively authorizes the construction of new interstate natural gas facilities. FERC is also the lead federal agency responsible for conducting environmental reviews of interstate natural gas projects in compliance with the National Environmental Policy Act.

On March 3, 2015, FERC issued a Certificate of Public Convenience and Necessity following a comprehensive, multi-year review of the AIM Project. The certificate (pdf, 610 KB) authorizes Algonquin to construct and operate the project’s facilities in accordance with the conditions set forth by FERC. 

On October 18, Algonquin requested authorization from FERC to place into service all of the AIM Project facilities except for the new pipeline associated with the crossing of the Hudson River, facilities at an existing meter and regulating station in Pomfret, CT, and the West Roxbury Lateral pipeline and associated new meter station. On October 28, FERC approved Algonquin’s in-service request. Algonquin is now authorized to provide up to 245,000 dekatherms per day (Dth/d) of incremental firm transportation service, out of the total AIM Project capacity of 342,000 Dth/d. Algonquin will utilize its existing crossings of the Hudson River for the transportation service until the new construction is complete and authorized for service by FERC.

Algonquin filed the certificate application for the project on February 28, 2014. The AIM Project was assigned docket number CP14-96-000.

You may visit FERC’s website and enter this docket number to follow the project.

Project timeline

  • Pre-filed with FERC June 2013
  • Filed FERC application February 2014
  • Receive FERC certificate March 2015
  • Commence construction May 2015
  • In-service November 2016

In January 2015, the New York State Department of Environmental Conservation (NYSDEC) provided a public comment period on the applications for the Air Title V permits, 401 Water Quality Certification, Protection of Waters permit, and Freshwater Wetland permit related to the modifications at the Stony Point and Southeast compressor stations and pipeline construction within New York State.

In May 2015, NYSDEC issued a Water Quality Certification, and Freshwater Wetlands and Stream Disturbance permits as well as proposed air permits and NYSDEC’s response to public comments on the air and water permit applications. In July 2015, NYSDEC issued final air permits.

Algonquin’s applications as filed with NYSDEC are available here:

The draft Title V permits and Permit Review Reports from NYSDEC website are available here:

The NYSDEC Legislative Public Hearings were scheduled as follows:

Date: Wednesday, January 21, 2015
Time: 6:00 p.m.
Location: Brewster Central School (note this is the corrected address)
Henry H. Wells Middle School Auditorium
570 Route 312
Brewster, NY 10509

Date: Thursday, January 22, 2015
Time: 6:00 p.m.
Location: Stony Point Community Center
5 Clubhouse Lane
Stony Point, NY 10980

NYSDEC extended the public comment period by two additional weeks – to Friday, February 27, 2015. A copy of the NYSDEC notice is available here (docx, 16 KB).

Additional construction plans are provided here:

On January 23, 2015, FERC staff issued the Final Environmental Impact Statement (FEIS) (pdf, 10.6 MB) for the AIM Project. The comprehensive FEIS analyzed the AIM Project facilities, route and information obtained during the FERC Pre-file Process and continuing through the FERC certificate proceeding.

Based on that information and input, FERC staff concluded in the executive summary of the FEIS (pdf, 1.2 MB) that the “construction and operation of the Project would result in some adverse environmental impacts but most impacts would be reduced to less-than-significant levels.”

Among the “principal reasons” cited are:

  • 93% of the project’s facilities “would be within or adjacent to existing rights-of-way”
  • 70% of the project’s facilities “would replace existing Algonquin pipelines within existing rights-of-way”
  • Algonquin “would minimize impacts on natural and cultural resources during construction and operation” through specific plans to mitigate impacts.

From June 2013 through February 2014, Algonquin participated in FERC’s “Pre-file” process, conducting a series of activities prior to filing the formal application. During the Pre-file process, Algonquin held a number of meetings with landowners, public officials, government agencies and community members to provide information and gather input on the AIM Project.

The Pre-file docket number was PF13-16-000.

Construction of approximately:

  • 20.1 miles of 42-inch diameter mainline take-up/relay and new pipeline in Connecticut and New York (includes a new 0.7-mile horizontal directional drill crossing of the Hudson River in New York)
  • 9.1 miles of 16-inch diameter take-up/relay pipeline in Connecticut
  • 1.3 miles of 12-inch diameter loop pipeline in Connecticut
  • 2.0 miles of 36-inch diameter loop extension pipeline in Connecticut
  • 5.1 miles of new 16-inch and 24-inch diameter lateral pipeline in Massachusetts, referred to as the West Roxbury Lateral Project. More information on the West Roxbury Lateral is available here
  • Addition of six new compressor units, for a total of 81,620 additional horsepower, at five existing compressor stations in New York, Connecticut and Rhode Island
  • Modification to an existing compressor station in Connecticut
  • Construction of one new meter station in Connecticut and two new meter stations in Massachusetts
  • Modifications to existing meter stations in New York, Connecticut and Massachusetts

We anticipate placing the AIM Project fully into service in November 2016.

For construction and landowner-related questions, please call Algonquin's 24-hour hotline in your area:

For other information, including media inquiries, please contact Marylee Hanley at 617-560-1573.