Document Accession #: 20210416-3039Filed Date: 04/16/2021

FEDERAL ENERGY REGULATORY COMMISSION
WASHINGTON, DC 20426

OFFICE OF ENERGY MARKET REGULATION

New York Independent System Operator, Inc. Niagara Mohawk Power Corporation
Docket No. ER21-1220-000

Issued: April 16, 2021

Sara B. Keegan, Esq.

New York Independent System Operator, Inc.

10 Krey Boulevard

Rensselaer, NY 12144

Christopher J. Novak, Esq. National Grid

40 Sylvan Road

Waltham, MA 02451

Reference: Second Amended and Restated Transmission Project Interconnection
Agreement

On February 26, 2021, New York Independent System Operator, Inc. (NYISO)
and Niagara Mohawk Power Corporation (Niagara Mohawk) (collectively, Joint Filing
Parties) submitted an executed Second Amended and Restated Transmission Project
Interconnection Agreement among NYISO, Niagara Mohawk, and H.Q. Energy Services
(U.S.) Inc. (HQUS) (Second Amended Agreement), designated as Service Agreement
No. 2472 under the NYISO Open Access Transmission Tariff (OATT).1 Joint Filing
Parties state that the Second Amended Agreement largely conforms to the pro forma
Large Generator Interconnection Agreement in Attachment X of NYISO’s OATT, with
limited non-conforming revisions due to the unique circumstances of the Cedar Rapids
Transmission Intertie Expansion Project. The Filing Parties request that the Second
Amended Agreement be accepted effective February 11, 2021.

Pursuant to the authority delegated to the Director, Division of Electric Power

1 New York Independent System Operator, Inc., NYISO Agreements, Agreement No. 2472, Joint IA Among NYISO, NMPC and HQUS re: Cedar Rapids, 2.0.0.

Document Accession #: 20210416-3039Filed Date: 04/16/2021

Docket No. ER21-1220-000- 2 -

Regulation - East, under 18 C.F.R. § 375.307, your submittal is accepted for filing, effective February 11, 2021, as requested.2

The filing was noticed on February 26, 2021, with comments, interventions, and protests due on or before March 19, 2021. Pursuant to Rule 214 (18 C.F.R. § 385.214), to the extent that any timely filed motions to intervene and any motion to intervene outof-time were filed before the issuance date of this order, such interventions are granted. Granting late interventions at this stage of the proceeding will not disrupt the proceeding or place additional burdens on existing parties.

This acceptance for filing shall not be construed as constituting approval of the referenced filing or of any rate, charge, classification, or any rule, regulation, or practice affecting such rate or service contained in your filing; nor shall such acceptance be
deemed as recognition of any claimed contractual right or obligation associated
therewith; and such acceptance is without prejudice to any findings or orders which have been or may hereafter be made by the Commission in any proceeding now pending or hereafter instituted by or against the NYISO or Niagara Mohawk.

This order constitutes final agency action. Requests for rehearing by the

Commission may be filed within 30 days of the date of issuance of this order, pursuant to

18 C.F.R. § 385.713.

Issued by: Kurt M. Longo, Director, Division of Electric Power Regulation - East

2 See 18 C.F.R. § 35.3(a)(2) (2020).