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Clean Air Markets

NEEDS v.5.15 User Guide

View a user guide for the the updated National Electric Energy Data System (NEEDS), the database used to construct the "model" plants that represent existing and planned/committed units in EPA modeling applications.

View Power Sector Modeling Platform v.5.15 for related information.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

NEEDS v.5.15 User Guide (PDF)(7 pp, 127 K, 08/2015)