NYISO Tariffs

The NYISO tariffs are updated on or about the effective date listed in a FERC order. The following note is revised with each tariff update to show the related order date, filing date, docket number, and effective date:

The most recent update to these tariffs reflects the Commission Order issued April 19, 2012, February 20, 2014 and September 19, 2014, accepting proposed language filed December 28, 2011, December 6, 2013, July 31, 2014 and October 8, 2014, effective October 22, 2014 under Docket Nos. ER12-701-000, 002, ER14-552-000, 001 and ER14-2552-000, 001.

In order to view tariff filings click here and then choose Filing in the Document Locator area.

The NYISO's Market Services Tariff and the Open Access Transmission Tariff are accessible from the eTariff Viewer.



A Quick Reference Guide for navigating the eTariff Viewer can be found here.