NGS and the environment

SRP is committed to generating energy in a way that is safe and environmentally responsible.


The Navajo Generating Station (NGS) is equipped with innovative scrubbing technology designed to reduce sulfur dioxide (SO2) emissions and combustion controls to reduce nitrogen dioxide (NO2) emissions.

Regional Haze Rule (NOx)

The Environmental Protection Agency (EPA) issued a final Best Available Retrofit Technology (BART) rule Document is a PDF for NOx emissions at NGS on July 28, 2014. This established a lifetime facility-wide cap in total NOx emissions from NGS between 2009 and 2044.

In compliance with the 2014 BART ruling, NGS' Annual Emission Report is available.

CCR Rule Compliance Data & Information

The EPA issued a final rule on April 17, 2015, to regulate Coal Combustion Residuals (CCR) under Subtitle D of the Resource Conservation and Recovery Act. The rule regulates CCRs, including fly ash, bottom ash, boiler slag and flue gas desulfurization materials, at electric utilities. As the operator of NGS, SRP provides information regarding the CCR landfill located at NGS.

View CCR documents

Our commitment

SRP is a community-based nonprofit utility committed to delivering power in a way that fosters sustainability and environmental excellence. Learn more about the innovative programs, initiatives and technologies we've put into place to better conserve and manage our precious resources.



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