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 Orders issued April 21, 2016 and November 16, 2017, accepting proposed tariff revisions filed October 19, 2015 and September 19, 2016 in Docket Nos. ER16-120-000, -001, and -003, effective October 20, 2015.

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 Web Viewer can be found here.