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Committed to improving air quality

Exelon’s investment in, and commitment to, clean technologies keeps our air emission rates well below industry averages. We continue to work with regulators and communities to achieve positive program results.

We understand the potential health impacts of air emissions and are committed to investing in air pollution control technologies and our low-emission energy portfolio to keep the company’s air emissions rates well below industry averages.

Exelon’s air emissions and emission rates are very low as a result of a number of factors, including:

  • Non-emitting hydroelectric power from our Conowingo, Safe Harbor, and Muddy Run hydroelectric plants.
  • Efficiency programs that provide additional generating capacity at Exelon’s nuclear and hydroelectric power plants.
  • Industry-leading capacity factors at our nuclear plants.
  • Continued development of new wind power projects through Exelon Wind.
  • Retirement of older, less-efficient fossil plants.

Reducing Air Emissions

Clean air is a critical local and regional health and economic issue. As a responsible corporate citizen, Exelon is committed to investing in our operations to keep the company’s air emission rates well below industry averages. Many of our operation changes and investments through Exelon 2020 have resulted in reduced air emissions. To learn more about air emissions and Exelon’s low all source generation emission rates, please review our corporate sustainability report and review the report "Benchmarking Air Emissions of the 100 Largest Electric Power Producers in the United States" that was co-funded by Exelon. 

Managing Carbon Dioxide (CO2) Emissions

Exelon believes carbon emissions must be addressed as a response to the compelling evidence of global climate change. To see how Exelon has been working to reduce carbon emissions, please review the "Exelon’s Response to Climate Change" section of our corporate sustainability report.

Additional details on CO2 emissions and emissions of other GHGs can be found under Climate Change and in the Exelon Corporation Sustainability Report

Managing Nitrogen Oxide (NOx) Emissions

Exelon also leads efforts to support sound regulatory policy that advances cleaner, more efficient generation in an economically responsible way. We believe that in competitive markets with clear environmental regulatory requirements, industry will make the most cost-effective investments to provide needed health benefits at the lowest possible costs.

Decreased NOx emissions at Exelon Generation have been driven primarily by coal plant retirements and divestitures, as well as by increased utilization of natural gas combined cycle generation.  Looking forward, portfolio NOx emission rates will be further lowered as additional low, or zero, emission generation is added to the portfolio.

Exelon owned-generation portfolio emission rates remained well below industry averages.

Additional information on Exelon’s actions to reduce emissions can be found in the Exelon Corporation Sustainability Report

Managing Sulfur Dioxide (SO2) Emissions

Exelon is taking proactive steps in the removal of sulfur dioxide emissions from its generation portfolio. We believe the public health and the environments of the communities we serve are of the utmost importance and recognize the need to reduce SO2 emissions. While these emissions are commonly found at fossil fuel plants, all bituminous coal-fired units in which Exelon has an ownership interest utilize scrubbers for SO2 removal. In addition to removing SO2, these systems also achieve co-benefit reductions in acid gas emissions. 

Exelon owned-generation portfolio SO2 emission rates were well below industry averages in 2013. 

Additional information on Exelon’s actions to reduce emissions can be found in the Exelon Corporation Sustainability Report

Toxics Release Inventory (TRI) Emissions

The responsible management of toxic chemical releases is a top priority of Exelon. Each year, we report to the EPA our toxic release inventory, which is made public on the EPA website following verification of the data. The report plays a significant role in providing communities and emergency planners with valuable information on the annual release and transfer of certain chemical substances, including releases to air, land and water, and materials sent to other facilities for further waste management. For further information on TRI emissions, please review Exelon's corporate sustainability report and visit EPA’s Web site:


Compliance Performance

Air Notices of Violation

Exelon’s Environmental Policy requires us to operate in full compliance with all applicable legal requirements and we hold ourselves and those working on our behalf accountable for this commitment.

A summary table of our compliance performance can be found in our most recent Exelon Corporation Sustainability Report



Corporate Sustainability Report
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