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 September 7, 2018 accepting proposed tariff revisions filed May 15, 2018 in Docket No. ER18-1620-000, effective May 15, 2018. The most recent effective date to these tariffs reflects the Commission Order issued July 13, 2018 accepting proposed tariff revisions filed May 22, 2018 in Docket No. ER18-1668-000, effective July 22, 2018.

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.