10 Krey Boulevard  Rensselaer, NY 12144

December 8, 2016

By Electronic Delivery

Honorable Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, NE

Washington, DC 20426

Re: Docket No. ER17-386-000, New York Independent System Operator, Inc.

- Filing to Correct Typographical Error

Dear Secretary Bose:

On November 18, 2016, the New York Independent System Operator, Inc. (“NYISO”)

filed with the Federal Energy Regulatory Commission (“Commission”) to establish: (i) the ICAP
Demand Curves for the 2017/2018 Capability Year; and (ii) the proposed methodologies and
inputs to be used as part of the annual updates to establish the ICAP Demand Curves for the
2018/2019, 2019/2020 and 2020/2021 Capability Years.1 It has come to the NYISO’s attention
that the table set forth on page 45 of the filing letter submitted on November 18, 2016 contains a
typographical error. The NYISO hereby submits this filing to acknowledge and correct this
inadvertent error.

I.Correction

It has come to the NYISO’s attention that the table set forth on page 45 of the filing letter
submitted on November 18, 2016 contains a typographical error with respect to a single value
listed in that table. Specifically, the first two digits of the “Peaking Plant Net Degraded Capacity
(DMNC ICAP MW)” value for the G-J Locality were inadvertently transposed. The correct
value is 218.0, rather than the “128.0” value listed in the filing letter submitted on November 18,
2016. The typographical error and correction thereof are depicted in the revised version of the
table set forth below.

1 Docket No ER17-386-000, New York Independent System Operator, Inc., Proposed ICAP

Demand Curves for the 2017/2018 Capability Year and Parameters for Annual Updates for Capability Years 2018/2019, 2019/2020 and 2020/2021 (November 18, 2016). Capitalized terms not otherwise defined herein shall have the meaning specified in the Market Administration and Control Area Services Tariff (“Services Tariff”) and the NYISO Open Access Transmission Tariff (“OATT”).

Peaking Plant Net
Degraded Capacity

(DMNC ICAP MW)

Peaking Plant Summer Capability Period

DMNC

Peaking Plant Winter Capability Period

DMNC

Level of Excess

WSR Values

Fixed for

Reset Period

Fixed for

Reset Period

Fixed for

Reset Period

Fixed for

Reset Period

Updated
Annually

217.012218.0217.6219.1

224.6226.8226.9224.9

230.3230.3228.7230.3

100.6%101.5%102.3% 103.9%

These values are updated annually and will be
publically available via the NYISO website.

The inadvertent typographical error in the filing letter has no impact on any other aspect
of the NYISO’s proposal. All models and other calculations used to determine parameters of the
ICAP Demand Curves contain the correct value. Moreover, the correct value is set forth in Table

5 of Exhibit A to the Affidavit of David Allen4 and Tables 2, 27 and 40, as well as Appendix B of Exhibit D to the Affidavit of Paul J. Hibbard, Dr. Todd Schatzki, and Craig Aubuchon that were submitted as part of the November 18, 2016 filing.

2 The data inputs for NYCA represent the NYISO’s proposal to use Load Zone F as the appropriate location for the NYCA ICAP Demand Curve peaking plant.

3 The data inputs for the G-J Locality represent the NYISO’s proposal to use Dutchess County as the appropriate location for the G-J Locality ICAP Demand Curve peaking plant.

4 The NYISO acknowledges that Table 19 of Exhibit A to the Affidavit of David Allen contains the same inadvertent typographical error as the table on page 45 of the filing letter submitted on
November 18, 2016. However, because this report was previously finalized and issued as part of the ICAP Demand Curve reset (“DCR”) in accordance with the requirements of the Services Tariff, the correct values are listed elsewhere within the same document (e.g., Table 5 of the report) and the
typographical error does not otherwise affect the NYISO’s proposal or the DCR outcomes, the NYISO has elected not to revise and reissue the report at this stage of the DCR process.

Honorable Kimberly D. Bose December 8, 2016

Page 3

II.Service

The NYISO will send an electronic link to this filing to the official representative of each
party to this proceeding, the official representative of each of its customers, to each participant
on its stakeholder committees, to the New York State Public Service Commission, and to the
New Jersey Board of Public Utilities. In addition, the complete filing will be posted on the
NYISO’s website at www.nyiso.com.

III.Conclusion

The NYISO respectfully requests that the Commission accept this filing to acknowledge and correct the inadvertent typographical error contained in the table on page 45 of the filing letter submitted on November 18, 2016.

Respectfully submitted,

/s/ Garrett E. Bissell
Garrett E. Bissell
Senior Attorney

New York Independent System Operator, Inc.

10 Krey Blvd.

Rensselaer, New York 12144 (518) 356-6107

gbissell@nyiso.com

cc:Michael Bardee

Nicole Buell

Anna Cochrane
Kurt Longo
Max Minzner
Daniel Nowak
Larry Parkinson

J. Arnold Quinn
Douglas Roe

Kathleen Schnorf
Jamie Simler
Gary Will

CERTIFICATE OF SERVICE

I hereby certify that I have this day served the foregoing document upon each person

designated on the official service list compiled by the Secretary in this proceeding in accordance with the requirements of Rule 2010 of the Rules of Practice and Procedure, 18 C.F.R. §385.2010.
Dated at Rensselaer, NY this 8th day of December 2016.

/s/ Joy A. Zimberlin

Joy A. Zimberlin

New York Independent System Operator, Inc.

10 Krey Blvd.

Rensselaer, NY 12144 (518) 356-6207