ISO-NE, NEPOOL, and PTO AC make joint filing regarding the interconnection clustering methodology 

Update 11/1/2017: FERC has issued its order accepting the interconnection queue clustering revisions. FERC rejected all protests and determined that the clustering revisions increase efficiencies, better inform the decisions of project developers, and allow project developers to share the costs of the upgrades necessary to accommodate their interconnection. By allowing interconnection requests to be studied in a cluster, the clustering revisions should provide a means to relieve the queue backlog in northern and western Maine, which is one of the primary obstacles to interconnections in that region. 

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Get easy access to helpful ISO-NE maps and diagrams on new webpage

ISO New England is pleased to announce the Maps and Diagrams webpage: a new one-stop-shop for many of the ISO’s most commonly used maps and diagrams related to the electric power system, the wholesale electricity marketplace, system planning, and industry relationships. The page is also a jumping off point to other informative pages across the ISO’s expansive website. The new page can be found under the About Us tab in the Key Grid and Market Stats section.

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Update on the 2017/2018 Winter Reliability Program

10/18/17 update: Initial participation results posted.

For the fifth year in a row, a winter reliability program is in effect in New England to address seasonal reliability challenges created by constraints on New England’s interstate natural gas pipeline system. The program is a short-term, cost-effective effort to help ensure eligible generators have the fuel needed to operate reliably during very cold winter periods.

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Regional transmission investment: Fall 2017 update

746 projects put into service since 2002 to fortify New England’s transmission system

The ISO recently published the October 2017 update to the Regional System Plan (RSP) Project List, which details Pool Transmission Facility (PTF) projects needed to ensure reliability in New England. Since the June 2017 update, 16 upgrades were placed in service, no new projects were added, and no major changes to project cost estimates occurred.

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Now online: Recording of Forward Capacity Market Reconfiguration Auctions webinar

The presentation and recording of the October 12 webinar, Forward Capacity Market Reconfiguration Auctions, are now available on the ISO New England website. This webinar provides a review of the qualification and submission processes as well as the schedule for the 3rd Annual Reconfiguration Auction and associated bilateral period for Capacity Commitment Period 2018-2019. Email the training team with questions at


Stephen Rourke, VP, system planning at ISO-NE, elected chairman of Eastern Interconnection Planning Collaborative

Representatives of the 20 planning authorities that are members of the Eastern Interconnection Planning Collaborative (EIPC) have elected Stephen Rourke, ISO-NE’s vice president for system planning, to serve as chairman of the collaborative Executive Committee through 2018.

Rourke, who has served as vice president for system planning for 11 years, has over 35 years of experience in operation of and planning for the New England bulk power system. “Interregional power system planning is a critical element in the work being done by every power system in the entire Eastern Interconnection,” Rourke noted, in order “to ensure that the individual systems and the whole interconnection continue to provide safe, reliable, and cost-effective electricity to the millions of homes and businesses between the Atlantic Ocean and the Rocky Mountains.”

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