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 June 27, 2014 accepting proposed language filed April 17, 2014 and June 4, 2014 , effective June 18, 2014, under Docket Nos. ER14-1735-000 and ER14-500-001.
In order to view pending tariff filings (i.e., not yet approved tariff language) click here and then choose FERC Filings in the Document Locator area.

The NYISO‘s Market Services Tariff and the Open Access Transmission Tariff will be accessible from the new Web Viewer.



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