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We have policies to conserve natural resources and minimize emissions of environmentally harmful substances such as:
- Greenhouse gases (GHG)
- Ozone-depleting substances (ODSs) as defined by the Montreal Protocol
- Key air pollutants including carbon monoxide, lead, volatile organic compounds, nitrogen oxides (NOx), particulate matter (PM-10) and sulfur oxides (SOx)
We maintain air emissions in pounds per megawatt-hour at or below industry averages. We achieve this record through a combination of nuclear power, emissions control technology, improved power plant efficiency and a cleaner fuel mix.
All of our power plants, except for the Palo Verde Nuclear Generating Station operate under Title V air permit requirements. Palo Verde has filed an application for a non-Title V permit.
In September 1999, EPA Region IX proposed a Federal Implementation Plan (FIP) which set air quality standards for our Four Corners Power Plant. The power plant, located on the Navajo Nation, is under a long-term lease agreement. The EPA has not yet finalized the FIP for Four Corners; however, Four Corners does operate pursuant to a Title V permit issued by the EPA.
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