interactive pipeline map

Navigate along the Iroquois pipeline for further information on our facilities.

launch now

glossary of terms


Thorough Planning, Preparation and Development to Fulfill Growing Demand

A new project typically takes several years to plan, develop and construct. All projects originate as the result of an Open Season and must follow the regulations of the Federal Energy Regulatory Commission (FERC) from the application process through completion.  As described below, many factors are taken into consideration, and much oversight is provided during the project’s lifespan.

Open Season
As part of its ongoing marketing activities, Iroquois conducts open seasons to solicit shipper interest in a potential incremental expansion of its system. An open season is a period of time when all parties are given equal consideration for transportation service. After the results of the open season are reviewed and potential facilities are analyzed, the feasibility of the project is determined. Following negotiations of precedent agreements, the FERC application process is initiated.  

Regulatory Process
Iroquois is required to comply with regulations of the Federal Energy Regulatory Commission (FERC) and other appropriate federal, state and local agencies.

Prior to filing a formal application, Iroquois may request approval from the Federal Energy Regulatory Commission to initiate the National Environmental Policy Act (NEPA) pre-filing review process. The FERC, as lead federal agency, will make an assessment of the project from an environmental standpoint and will issue a determination of whether or not the proposed project is within the public convenience and necessity. Additional information on the FERC process can be found at

Location Selection
When determining a route for a pipeline or a location for a facility, many factors are considered including safety, environmental impact, access, constructability, land use, economics and public and landowner input.

Where practicable, Iroquois seeks to minimize land disturbance by locating additional facilities at its current locations, and by following existing pipeline and other energy corridors.

Environmental Sensitivities
Prior to starting significant construction activities, Iroquois collects and analyzes site-specific environmental information in order to understand potential impacts and to develop an Environmental Report for submittal to the FERC. Iroquois seeks all necessary approvals and permits from other state and local agencies as required by the FERC prior to construction.

Safety Considerations
The safety of our employees and communities is a top priority for Iroquois. Interstate natural gas pipelines are America's safest transportation network, and Iroquois is very proud of its excellent, longstanding safety record. All proposed pipeline and facilities will be designed, built and operated in a safe and environmentally responsible manner.

All phases of construction and operation are monitored by various government agencies such as the United States Department of Transportation, the Connecticut Department of Public Utility Control and the New York Public Service Commission. As part of Iroquois' ongoing Public Awareness Education Program, we work with, and provide training to, local emergency responders to partner in safety.

Iroquois works to ensure the safety and security of its construction sites. Safety inspectors monitor the sites and security personnel are onsite as required.

Construction Impacts
Iroquois is committed to minimizing disruptions during the construction of its projects. Through our outreach initiative, we identify questions and concerns about construction and work with the community and local officials to address the issues.

Community Participation
In order to identify environmental issues and concerns, early outreach to our stakeholders is essential for us. During the pre-filing and the application process, we provide information about the project and seek public input in a number of ways:

  • Personal visits with impacted landowners, local officials, community groups and other interested stakeholders
  • Public open houses
  • Presentations to various civic groups and government agencies as requested
  • Notification packages, newspaper advertisements and project brochures
  • Informational postings on our website

Upon receiving approval, and throughout construction, we keep the public updated by:

  • Informational postings on our website
  • Recorded messages on our 1-800 hotline 1-800-253-5152
  • Notices in local newspapers
  • Staff available to answer any questions that may arise

What the Community Can Expect
Upon receiving all necessary permits and approvals, construction activities begin. These activities include mobilization of personnel and equipment, right-of-way or site preparation and installation and testing of new pipe and/or aboveground facilities.

Clean up, landscaping and/or restoration begins after construction is complete and may continue well past the completion of construction. Iroquois also monitors the pipeline right-of-way after construction to ensure land restoration has been successful.

© 2019 Iroquois Gas Transmission System, LP. All Rights Reserved.    Privacy Policy    Legal Notice For Non-Emergencies: 800.253.5152