The purpose of this July 2012 document is to provide guidance for developing a consistent approach to documenting efficiency credits generated from energy conservation measures in the Implementation Plan for boilers covered by the Boiler MACT rule (i.e., Subpart DDDDD of CFR Part 63).

For more information on the rules, visit the regulation page for Industrial, Commercial, and Institutional Boilers and Process Heaters: National Emission Standards for Hazardous Air Pollutants (NESHAP) Major Sources.

• National Emission Standards for Hazardous Air Pollutants (NESHAP) for Major Sources: Industrial, Commercial, and Institutional Boilers - Guidance for Calculating Emission Credits Resulting from Implementation of Energy Conservation Measures (PDF)(54 pp, 597 K, July 2012)