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Legal & Regulatory

NYISO Filings at the FERC and related Orders from January 1, 2010, are accessible on the eTariff Viewer.  The NYISO Tariffs maintained on the eTariff Viewer contain only accepted, effective provisions.

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

To visit FERC’s eLibrary, click here. NYISO Filings and related FERC Orders prior to January 1, 2010, are available by navigating the document structure below.  Also posted below are NYISO non-FERC filings and related orders, agreements, and notices to Market Participants.

Legal & Regulatory


NYISO DOCUMENT DISCLAIMER - The posting of documents on this web site is done for the convenience of the NYISO customers and other interested visitors to the NYISO web site. Please be advised that while the NYISO attempts to conform all posted documents to the original, changes can result from the programs used to format the documents for posting on the web site as well as from the programs used by the viewer to download and read the documents. Accordingly, the NYISO makes no representation or warranty, express or implied, that the documents on this web site are exact reproductions of those documents listed (Invoices are subject to ISO Tariff provisions regarding their initial issuance and final adjustments).