![]() fuel economy (mpg) declined by 12% from 1988-2004, then improved by 32% from 2004-2020, reaching an average of 25.4 mpg in 2020. Personal Transportation ( See Personal Transportation Factsheet) Switching to a cold water wash once per week can reduce household GHG emissions by over 70 lbs annually. Refrigerators are one of the largest users of household appliance energy in 2020, an average of 621 lbs CO 2e per household was due to refrigeration.Space heating and cooling are estimated to account for 43% of energy in U.S.Residential electricity use in 2020 emitted 561.1 mmt CO 2e, 9.4% of the U.S.Nuclear, solar, wind, and hydroelectric release no CO 2 when they produce electricity, but emissions are released during upstream production activities (e.g., solar cells, nuclear fuels, cement production). 8Coal releases 2.3 pounds, petroleum releases 2.1 pounds, and natural gas releases 0.9 pounds. ![]() For each kWh generated in the U.S., an average of 0.822 pounds of CO 2e is released at the power plant.Household Emissions ( See Residential Buildings Factsheet) Greenhouse Gases Contribution by food type in average diet 3 For example, beef's GHG emissions per kilogram are 7.2 times greater than those of chicken. A vegetarian diet greatly reduces an individual’s carbon footprint, but switching to less carbon intensive meats can have a major impact as well. ![]() household, eliminating the transport of food for one year could save the GHG equivalent of driving 1,000 miles, while shifting to a vegetarian meal one day a week could save the equivalent of driving 1,160 miles.
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