December 4, 2018
By Electronic Delivery
Honorable Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, NE
Washington, DC 20426
Re: New York Independent System Operator, Inc., Docket No. ER17-1561-00_;
Compliance Filing to Establish an Effective Date for FERC Order No. 831 Tariff Revisions
Dear Secretary Bose:
In accordance with the requirements of the Federal Energy Regulatory Commission’s
(“Commission’s”) November 9, 2017 Order on Compliance1 and February 1, 2018 Letter Order2 in this proceeding, the New York Independent System Operator, Inc. (“NYISO”) submits this filing to provide notice of an expected effective date of December 18, 2018, for the tariff amendments to comply with Order No. 831.3
The Order on Compliance accepted the NYISO’s proposal for a flexible effective date of no
later than December 31, 2018. The NYISO hereby notifies the Commission and its Market
Participants that it intends to implement the offer cap requirements in its software on December 18,
2018. The first Day-Ahead Market day that will incorporate the new offer cap rules will be December
20, 2018.
1 New York Indep. Sys. Operator, Inc., 161 FERC ¶ 61,151 at PP 1, 12 and Ordering Paragraph
(C) (“NYISO is hereby directed to submit a filing with no less than two weeks’ notice of the proposed effective date, as discussed in the body of this order.”).
2 New York Indep. Sys. Operator, Inc., Docket No. ER17-1561-001, Letter Order at p. 2
(February 1, 2018) (“In accordance with the requirements of the November 9, 2017 Order, NYISO will
submit a filing providing no less than two weeks’ notice of the effective date of the tariff revisions.”).
3 Offer Caps in Markets Operated by Regional Transmission Organizations and Independent System
Operators, Order No. 831, 81 Fed. Reg. 87,770 (Dec. 5, 2016), 157 FERC ¶ 61,115 (2016); Order on Rehearing and Clarification, Order No. 831-A, 82 Fed. Reg. 53,403 (Nov. 16, 2017), 161 FERC ¶ 61,156 (2017).