We have made significant long-term investments in environmental controls to reduce the impact of how we generate electricity. From 2000 through 2020, we invested approximately $9 billion in environmental controls, primarily related to the Clean Air Act. These investments subsequently resulted in significant emissions reductions. Since 1990, we reduced our annual emissions of sulfur dioxide (SO2) and nitrogen oxide (NOx) by approximately 98% and 96%, respectively. Since 2001, we reduced our annual mercury emissions by approximately 98%.
Additional information about mercury is located within the Toxics Release Inventory program.
Through 2020, we reduced our carbon emissions by 74% (from a 2000 baseline), a decade ahead of our original goal to reduce carbon emissions by 70% by 2030. In February 2021, we announced a new goal to reduce our carbon footprint by 80% by 2030 and achieve net-zero by 2050. These new goals include a commitment to review them annually.
We are often asked whether or not our emissions data is third-party verified. AEP’s emissions data is not third-party verified as the data is derived from calibrated and certified systems that are deemed acceptable for all compliance requirements.