AEP’s investments in environmental controls have resulted in significant reductions in air emissions. Since 1990, sulfur dioxide (SO2) and nitrogen oxide (NOx) emissions have been reduced by about 88 percent and 87 percent respectively, while mercury emissions have declined by nearly 73 percent since 2001. Mercury emissions information is reported to the EPA under the Toxics Release Inventory program.

Our emissions will likely continue to decline further in the future with the installation of additional emission control systems on coal units, the retirement of additional coal units and the increased use of other resources, including natural gas and renewables. Between 2000 and 2016, AEP will have invested an estimated $8.5 billion in environmental controls for our plants, resulting in positive environmental impacts.

Read more about AEP’s CO2 emissions.