In 2011, when Ascension joined 60 founding members in the Department of Energy’s Better Buildings Challenge to reduce energy consumption, the ministry included 68 acute care facilities encompassing 30 million square feet of space. Ascension was one of two health systems originally involved in the challenge, and set a bold goal to reduce energy use by 20 percent by 2020. Ascension’s efforts were rewarded in December 2016 when it reached its Better Buildings Challenge goal of 20 percent energy reduction more than three years ahead of schedule. Ascension has reduced energy use by 21.4 percent, yielding a total cost avoidance of $53.3 million and carbon dioxide emission avoidance of 1,114,600 tons. The calculated percentage takes into account both new facilities and those that are no longer part of Ascension.