In 2021, the United States spent approximately *** million U.S. dollars on energy efficiency projects. Almost ** percent of the expenditure was in electricity programs. In the period under consideration, electric energy programs accounted for the largest share of annual energy efficiency spending in the country. Energy efficiency expenditure in the U.S. peaked in 2019 at *** million U.S. dollars.
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ACEEE, & Expert(s). (September 14, 2023). Expenditures on electric energy and natural gas energy efficiency programs in the United States from 2006 to 2021 (in million U.S. dollars) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 01, 2026, from /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/
ACEEE, und Expert(s). "Expenditures on electric energy and natural gas energy efficiency programs in the United States from 2006 to 2021 (in million U.S. dollars)." Chart. September 14, 2023. ÌÇÐÄÆƽâ°æ. Accessed August 01, 2026. /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/
ACEEE, Expert(s). (2023). Expenditures on electric energy and natural gas energy efficiency programs in the United States from 2006 to 2021 (in million U.S. dollars). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 01, 2026. /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/
ACEEE, and Expert(s). "Expenditures on Electric Energy and Natural Gas Energy Efficiency Programs in The United States from 2006 to 2021 (in Million U.S. Dollars)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 14 Sep 2023, /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/
ACEEE & Expert(s), Expenditures on electric energy and natural gas energy efficiency programs in the United States from 2006 to 2021 (in million U.S. dollars) ÌÇÐÄÆƽâ°æ, /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/ (last visited August 01, 2026)
Expenditures on electric energy and natural gas energy efficiency programs in the United States from 2006 to 2021 (in million U.S. dollars) [Graph], ACEEE, & Expert(s), September 14, 2023. [Online]. Available: /statistics/1399189/electricity-and-natural-gas-energy-efficiency-spending-united-states/
