ISO-NE Website
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
Click on the categories below to view additional information.
| Docket No. |
Date Issued |
Company |
Title |
| ER23-739-000 |
10/19/23 |
ISO New England Inc. |
Order Accepting Tariff Revisions |
| EL22-63-000 |
09/21/23 |
ISO New England Inc. |
Order on Show Cause Proceeding |
| EL23-89-000 |
09/21/23 |
Brookfield Renewable Trading and Marketing LP v. ISO New England Inc. |
Order Granting Complaint |
| ER22-2467-000 |
06/15/23 |
ISO New England Inc. |
Order on Compliance Filing |
| ER22-2357-000 |
06/15/23 |
ISO New England Inc. |
Order on Compliance Filing |
| EL22-42-000 |
02/16/23 |
RENEW Northeast, Inc. and the American Clean Power Association v. ISO New England Inc. |
Order Dismissing Complaint |
| 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 |
