EPS Partnership Accomplishments
Since 1999, members of the U.S. electric power industry and the EPA have been working together to identify and implement opportunities to reduce SF6 emissions. Partners voluntarily report their SF6 emissions and nameplate capacity estimates to EPA.
Note: Under EPA’s Greenhouse Gas Reporting Program, Partners with a total nameplate capacity exceeding 17,820 pounds must report emissions and nameplate capacity under Subpart DD - Use of Electric Transmission and Distribution Equipment.
The partnership’s average annual SF6 emission rate, the ratio of SF6 emissions relative to total SF6 nameplate capacity (i.e., the total quantity of SF6 contained in electrical equipment), is a benchmark metric by which achievements of the partnership are tracked. As illustrated in the figure below, the average annual SF6 emission rate of Partners has decreased drastically since 1999.
Between 1999 and 2021, Partners have collectively decreased SF6 emissions by 80% and reduced emissions rate (emissions/nameplate capacity) by 90%.