ISO-NE Website

Map of New England ISO (ISO-NE)

As the RTO for New England, ISO-NE is responsible for operating wholesale power markets that trade electricity, capacity, transmission congestion contracts and related products, in addition to administering auctions for the sale of capacity. ISO-NE operates New England’s high-voltage transmission network and performs long-term planning for the New England system. ISO-NE serves six New England states: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont. New England’s all-time peak load was 28 GW in summer 2006. ISO-NE is interconnected with the New York Independent System Operator (NYISO), TransEnergie (Québec) and the New Brunswick System Operator. ISO-NE imports around 17 percent of its annual energy needs from Québec, NYISO, and New Brunswick. In ISO-NE’s annual Forward Capacity Auction (FCA), both generator and demand resources offer capacity three years in advance of the period for which capacity will be supplied. The three-year lead time is intended to encourage participation by new resources and allow the market to adapt to resources leaving the market. ISO-NE relies primarily on natural gas-fired and nuclear generation, accounting for 49% and 31% of the systems supply in 2016, respectively.

List of Orders

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Docket No. Date Issued Company Title
EL22-31-000 07/28/22 Northern Maine Independent System Administrator, Inc. v. ISO New England Participating Transmission Owners Administrative Committee Order on Complaint
ER22-707-001 06/16/22 ISO New England Inc. New England Power Company d/b/a National Grid Order Addressing Arguments Raised on Rehearing
Docket No. Date Issued Company Title
ER21-787-003 09/23/21 ISO New England Inc. Rehearing Work  Order Addressing Arguments Raised on Rehearing
ER18-619-002 02/18/21 ISO New England Inc. Order Rejecting Rehearing Request
Docket No. Date Issued Company Title
ER18-619-001 11/19/20 ISO New England Inc. Order Addressing Arguments Raised on Rehearing
ER20-739-002 09/17/2020 ISO New England Inc. Order Addressing Arguments Raised on Rehearing
ER19-1428-003 06/18/20 ISO New England Inc. Order Accepting Tariff Revisions
EL19-90-000 06/18/20 ISO New England Inc. Order on Section 206 Investigation 
ER19-470-003  04/16/20 ISO New England Inc. Order on Rehearing
ER19-1952-000  03/19/20 ISO New England Inc. Order Accepting Tariff Revisions
ER19-1951-000  03/19/20 ISO New England Inc. and Participating Transmission Owners Administrative Committee Order on Compliance
ER20-308-000  02/20/20 ISO New England Inc. Order Accepting Informational Filing
Docket No. Date Issued Company Title
ER19-470-000  11/21/19 ISO New England Inc. Order on Compliance Filing
EL19-90-000  10/17/19 ISO New England Inc. Order Instituting Section 206 Proceeding
Docket No. Date Issued Company Title
ER19-169-000  12/20/18 ISO New England, Inc. Order Accepting Tariff Revisions
ER14-1409-000  09/20/18 ISO New England Inc. Order Dismissing Amended Protest
EL16-120-002  09/20/18 New England Power Generators Association, Inc.
v.
ISO New England Inc.
Order Denying Motion for Clarification and Accepting Compliance Filing
ER18-619-000  03/09/18 ISO New England Inc. Order on Tariff Filing
Docket No. Date Issued Company Title
ER17-2110-000  10/19/17 ISO New England Inc. Order Accepting Filing and Granting Waiver
EL16-120-000  01/19/17 New England Power Generators Association, Inc.

v.

ISO New England Inc.
Order Granting Complaint In Part and Setting Complaint for Hearing and Settlement Judge Procedures In Part
ER16-1904-001  01/19/17 ISO New England Inc. Order Denying Rehearing
Docket No. Date Issued Company Title
EL16-38-001  10/20/16 Dominion Energy Marketing, Inc.
Dominion Energy Manchester Street, Inc.

v.

ISO New England Inc.
Order Denying Rehearing
ER16-1041-000  06/16/16 ISO New England Inc. Order Accepting Forward Capacity Auction Results Filing
EL16-48-000 06/16/16 NextEra Energy Power Marketing, LLC and Northeast Energy Associates, a Limited Partnership

v.

ISO New England Inc.
Order On Complaint
ER08-633-003  05/19/16 ISO New England Inc. Order Directing Resettlements
Docket No. Date Issued Company Title
EL14-23-000  11/19/15 ISO New England Inc. Order On Compliance Filing
EL15-25-001  11/19/15 New England Power Generators Association, Inc.

v.

ISO New England Inc.
Order Denying Rehearing
ER14-2419-003 and EL14-52-002  11/19/15 ISO New England Inc. Order Denying Rehearing
ER14-1050-002 and EL14-52-001  11/19/15 ISO New England Inc.
and

New England Power Pool
Order Denying Rehearing
EL15-57-000  07/16/15 GenOn Energy Management, LLC                   Order Denying Complaint
ER15-1137-000  06/18/15 ISO New England Inc. Order Accepting Forward Capacity Auction Results Filing

 

This page was last updated on July 28, 2022