How energy efficiency benefits Americans

Fifty years ago, American homes were energy hogs: refrigerators guzzled electricity; heated air escaped through leaky walls; loud, inefficient motors powered HVAC systems. The amount of energy wasted was absurd.

So much has changed for the better.

For decades, we have refined how light bulbs brighten our homes and air conditioners cool our buildings. Today, most of our appliances are more energy efficient than ever – and this has made our lives better. Between environmental, health and financial savings, the energy efficiency gains we’ve scored in recent decades are a win for everyone.

With rollbacks of efficiency standards cropping up in the headlines, it’s important to review just how far we’ve come … and how much better energy efficiency has made our lives.

We have made household utilities and appliances more energy efficient

In the past 40 years, average energy use per household has significantly decreased – by over 37 million Btu per home to be exact, which is enough energy to power roughly 20 traditional 60-watt lightbulbs for 24 hours for an entire year.[1] This is largely explained by improvements in energy efficiency, meaning we’re using appliances and equipment that consume less energy to get the same job done.

Total residential energy use in the U.S. has risen steadily, if slowly, since 1980 – from 9.9 quadrillion Btu to 11.2 quadrillion Btu in 2024. This comes as no surprise; more homes have been built since then, and these homes are larger and contain more energy-using machines. But this number would be dramatically higher if it weren’t for increasingly efficient everyday household amenities.

Look at light bulbs for example: For more than a century, American homes were lit with the familiar glow of traditional incandescent bulbs. However, these bulbs wasted about 90% of the energy they used as heat – only 10% of it was actually used to produce light.

Today, households commonly light their kitchens, living rooms and bedrooms with LED bulbs, which use at least 75% less energy and can last up to 25 times longer than incandescent bulbs. Between 2015 and 2020 – a span of just five years – U.S. households shrunk lighting electricity consumption from about 130.6 billion kWh to 80.8 billion kWh total. Within the same timeframe, the number of households that had installed at least one LED bulb tripled – from 33.8 million to 101.85 million.

Light bulbs are just one device that helps to illuminate the bigger picture: Innovations in technology – coupled with energy efficiency standards and incentives that have moved those new technologies into the marketplace – have enabled households to achieve unprecedented levels of energy efficiency. Tally up the efficiency upgrades that have been made to all of our everyday home appliances – dishwashers, clothes dryers, water heaters and more – and the story multiplies.

How have Americans benefitted from energy efficiency?

Besides reducing our consumption of energy, Americans have enjoyed the benefits that energy efficiency has delivered for our environment, health and household finances.

Improvements in energy efficiency translate into direct monetary savings, reducing many families’ energy bills. If it weren’t for energy efficiency measures, Americans would have spent about $800 billion more on their energy bills – or $2,500 per capita – in 2014. National energy savings from energy efficiency in that year amounted to 58 quadrillion Btu, which is over half of today’s national annual energy use.[2]

Lessening energy demand through efficiency measures has also been increasingly critical in relieving pressure on the earth’s already scarce resources, like fossil fuels, which are used to produce electricity and fuel. Efficiency and fuel economy standards in cars are a shining example. From 1975, Corporate Average Fuel Economy (CAFE) standards and other factors have helped the country avoid consuming roughly 2 trillion gallons of gasoline by requiring that vehicles be more fuel-efficient. That’s approximately 15 years of present-day gasoline consumption.[3]

By using less fossil fuel energy, we’re also cutting down on the greenhouse emissions and air pollution produced by cars and power plants. The pollutants they release contribute to all kinds of health problems, including respiratory and cardiovascular diseases, and environmental harms such as smog and climate change. In fact, CAFE standards have saved 17 billion tons of greenhouse gas emissions from entering earth’s atmosphere – more than two and a half years’ worth of total U.S. emissions.[4]

Another proven example of energy efficiency’s environmental benefits comes from Energy Star, an EPA program that promotes products meeting efficiency standards. Since its creation, it has helped prevent the release of 4 billion metric tons of greenhouse emissions – which is equivalent to the emissions produced by 933 million gasoline-powered passenger vehicles in a year. In 2020, the program’s energy savings averted the release of hundreds of thousands of tons of pollutants like nitrogen oxides, sulfur dioxide and particulate matter into our air – totaling an estimated $7 billion to $17 billion in public health benefits.

Household energy efficiency upgrades also make living indoors safer and more comfortable. Weatherizing homes – whether through improving heating systems, insulation or ventilation – can protect them from dampness, mold, mildew and pests all while improving indoor air quality. Efficiency upgrades can alleviate health and well-being concerns that stem from these hazards, for example, reducing allergy, cold and asthma symptoms, and even preventing asthma-induced hospitalizations and emergency room visits. One study estimated that weatherizing single-family and mobile homes produced over $1.1 billion in health-related benefits. Households saved costs from avoiding asthma and thermal stress-related complications, alongside reduced instances of carbon monoxide poisoning and house fires.

Let’s keep up our energy efficiency momentum

It’s possible today to use much less energy than was required in 1980 to power the same home. This is no accident – we have efficiency standards, consumer education programs and energy guide labels to thank.

Since the 1970s, energy efficiency standards have been a mainstay of U.S. energy policy. Laws that govern energy conservation of household appliances and consumer products – such as the National Appliance Energy Conservation Act of 1987 or the Energy Policy Act of 1992 – and programs like Energy Star have pushed energy efficiency forward. States have established their own policies and programs that have built on these federal efforts.

Efficiency standards, building codes, test procedures and certification requirements don’t just save consumers energy – they translate into massive environmental, health and financial gains. Going backwards on energy efficiency standards means undermining decades of innovation that have made our lives better by reducing waste, saving money, protecting health and cutting pollution.

Energy efficiency provides a path toward a cleaner, healthier future. Now is not the time to reverse course.

Notes

[1] 2020: Energy Information Administration, Residential Energy Consumption Survey Table CE2.1 Annual household site fuel consumption in the United States—totals and averages, 2020, March 2023, archived at https://web.archive.org/web/20250919215627/https://www.eia.gov/consumption/residential/data/2020/c&e/pdf/ce2.1.pdf, p. 1; 1980: Energy Information Administration, Residential Energy Consumption Survey: Consumption and Expenditures April 1980 through March 1981, September 1982, archived at https://web.archive.org/web/20250308082524/https://www.eia.gov/consumption/residential/data/archive/pdf/DOE%20EIA-0321-1.pdf, p. 10.; Traditional lightbulbs are 60 watts: Federal Trade Commission, Shopping for Lightbulbs, n.d., archived at https://web.archive.org/web/20251006133134/https://consumer.ftc.gov/node/77475; Btu to kWh conversion: Energy Information Administration, Energy Conversion Calculators, n.d., https://www.eia.gov/energyexplained/units-and-calculators/energy-conversion-calculators.php (screenshot also available)

[2] Energy Information Administration, Monthly Energy Review, August 2025, archived at https://web.archive.org/web/20250919041137/https://www.eia.gov/totalenergy/data/monthly/pdf/mer.pdf, p. 17, Table 1.3 Primary Energy Consumption by Source, 2024 total.

[3] 2023 gas consumption: Coltura, U.S. Gasoline Consumption, n.d., archived at https://web.archive.org/web/20251002201209/https://coltura.org/us-gasoline-consumption/.

[4] US emissions in 2022 were 6,343 million metric tons: Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks, n.d., archived at https://web.archive.org/web/20251002201821/https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks.