[1] Documented benefits include: A 2012 study by the American Council for an Energy-Efficient Economy found that multifamily buildings present a tremendous opportunity for energy savings.
Comprehensive, cost-effective upgrades in multifamily buildings could improve efficiency by 15-30%, the Council found, representing an annual sector-wide savings of almost US$3.4 billion.
[2] Globally, buildings constitute a leading consumer of energy and a significant source of greenhouse gas emissions.
[3] In the United States in 2016, carbon emissions from homes and commercial businesses contributed 6,511 million metric tons of CO2 equivalent to the atmosphere, or 11 percent of the nation's total.
[5][6] As of mid-2021, at least 45 U.S. cities have to date passed "all electric" ordinances that either mandate or incentivize all-electric new construction.