AEP has made, and continues to make, significant long-term investments in environmental controls to reduce the impact of how we generate electricity. From 2000 through 2019, AEP invested approximately $9 billion in environmental controls, primarily related to the Clean Air Act. These investments subsequently resulted in significant emissions reductions. Since 1990, AEP reduced its annual emissions of sulfur dioxide (SO2) and nitrogen oxide (NOx) by approximately 97% and 94%, respectively. Since 2001, AEP reduced its annual mercury emissions by approximately 97%.
Additional information about mercury is located within the Toxics Release Inventory program. Read more information about carbon emissions.