FEDERAL ENERGY REGULATORY COMMISSION
WASHINGTON, D.C.

OFFICE OF ENERGY MARKET REGULATION

In Reply Refer To:

New York Independent System Operator, Inc. Docket Nos. ER10-841-000 and

ER10-841-001

Issued:  5/10/10

New York System Operator, Inc.

10 Krey Boulevard

Rensselaer, NY 12144

Attention:Kristin A. Bluvas

Counsel for New York System Operator, Inc.

Reference:   New York Independent System Operator, Inc.’s Proposed Tariff Revisions
Regarding its Virtual Trading and Eligibility Tariff Provisions

On March 5, 2010, New York System Operator, Inc. (NYISO) submitted proposed
tariff revisions to its Open Access Transmission Tariff (OATT) to modify or eliminate
minor, eligibility related provisions which are vestiges of the pro forma OATT but
inapplicable to NYISO’s financial market design.   NYISO also proposed two minor
changes to its Market Administration and Control Area Services Tariff (Services Tariff)
to clarify sections related to virtual trading.  The main revision to the Services Tariff
indicates that additional bidding requirements for virtual transactions are provided in
NYISO procedures.  On March 12, 2010, NYISO submitted errata to the original filing as
the language contained in the OATT for two sheets was filed on outdated base pages.

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

Regulation - East, under 18 C.F.R. § 375.307, your submittals in the above referenced

dockets, except for the tariff sheets rejected as moot by the substitute sheets, are accepted for filing effective May 4, 2010, as requested.1

Public notice of the March 5, 2010 filing was issued on March 8, 2010, with

comments due on or before March 26, 2010.  Public notice of the March 12, 2010 filing
was issued on March 16, 2010, with comments due on or before April 2, 2010.  Pursuant
to Rule 214 (18 C.F.R. § 385.214 (2009)), all timely filed motions to intervene and any

1 See Appendix for a list of the accepted and rejected tariff sheets.

Docket Nos. ER10-841-000 and ER10-841-0012

motion to intervene out-of-time filed before the issuance date of this order are granted.
Granting late intervention at this stage of the proceeding will not disrupt the proceeding
or place additional burdens on existing parties.  No protests or adverse comments were
filed.

This acceptance for filing shall not be construed as constituting approval of the

referenced filing or any rate, charge, classification, or any rule, regulation, or practice

affecting such rate or service contained in the 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 NYISO.

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 (2009).

Sincerely,

Jignasa Gadani, Director Division of Electric Power Regulation - East

cc: All Parties
Public File

Docket Nos. ER10-841-000 and ER10-841-0013

Appendix

New York Independent System Operator, Inc.
FERC Electric Tariff, Original Volume No. 1

Docket No. ER10-841-000

Tariff Sheets Accepted Effective May 4, 2010

Seventh Revised Sheet No. 28

Second Revised Sheet No. 44A
Second Revised Sheet No. 45
First Revised Sheet No. 117
First Revised Sheet No. 127
First Revised Sheet No. 130
First Revised Sheet No. 148
Fourth Revised Sheet No. 150

Docket No. ER10-841-000

Tariff Sheets Rejected as Moot

Fifth Revised Sheet No. 44
Sixth Revised Sheet No. 111

Docket No. ER10-841-001

Tariff Sheets Accepted Effective May 4, 2010

Sixth Revised Sheet No. 44

Seventh Revised Sheet No. 111

New York Independent System Operator, Inc.
FERC Electric Tariff, Original Volume No. 2

Docket No. ER10-841-000

Tariff Sheets Accepted Effective May 4, 2010

Seventh Revised Sheet No. 88

Fifth Revised Sheet No. 95.01