EPS Partnership Accomplishments

Since 1999, members of the U.S. electric power industry have partnered with EPA's SF₆ Emission Reduction Partnership for Electric Power Systems and voluntarily reported their SF₆ emissions and nameplate capacity estimates to the partnership.

Note: Some Partners may be subject to EPA’s Greenhouse Gas Reporting Program (GHGRP) and must report emissions, nameplate capacity, and other related data as described in Subpart DD - Use of Electric Transmission and Distribution Equipment. This data is collected by EPA's GHGRP, not the partnership.

The partnership’s average annual SF₆ emission rate is a benchmark metric by which achievements of the partnership are tracked. This rate is the ratio of SF₆ emissions relative to total SF₆ nameplate capacity (i.e., the total quantity of SF₆ contained in electrical equipment). Other metrics such as mass emissions and nameplate capacity are also tracked.