How to Lower Your Electric Bill: Find What Uses the Most, Then Fix It

Written by Sara Ibrahim. Sara researches home and kitchen products for Cupindy. · Published September 8, 2024 · Updated October 10, 2026

Every electric bill comes down to two numbers: the kilowatt-hours (kWh) you used and the price of each one. The second has been climbing: the average U.S. home paid 18.19 cents per kWh from January to July 2026, up from 17.01 cents a year earlier, EIA data show. That is a 6.9% rise, so part of a higher bill may not be your doing.

This guide shows how to tell which number moved, find what uses the most power in your home, and fix the biggest users first.

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How we put this together: on October 10, 2026 we read EIA's latest price and usage tables, ENERGY STAR's guidance, Lawrence Berkeley National Laboratory's standby-power research and the product makers' spec pages. The U.S. Department of Energy removed more than 1,600 of its Energy Saver pages in July 2026, so we cite these sources instead. We haven't tested these products, and every cost below is a worked example, not a measurement.

Why is my electric bill so high?

Either you used more kWh or each kWh cost more. Put this bill next to the same month last year and compare the kWh line first. If usage rose, look at the season or something new that runs a lot. If usage is about the same, the price or fees went up.

How to read your electric bill: kWh, rate and fixed charges

Three parts make up the total: the kWh you used, the price per kWh (often split into supply and delivery charges), and fixed charges you pay even if you use nothing. A kWh is 1,000 watts used for one hour; EIA defines it as “A measure of electricity defined as a unit of work or energy”. Cutting kWh lowers the first two parts but never the fixed charges.

Time-of-use and off-peak rates

Some utilities charge more at busy hours and less at night or on weekends; your bill or rate page will say time-of-use, on-peak or off-peak. On such a plan, running the dishwasher, laundry or car charger off-peak lowers the price of those kWh. On a flat rate, the hour doesn't matter.

Average electric bill and price per kWh by state

In 2024 the average U.S. home bought 863 kWh a month and paid $142.26, at 16.48 cents per kWh, according to EIA's latest annual figures. Prices have climbed since. The table shows each state's average home price for January to July of 2026 and 2025, plus its 2024 average bill.

Prices: EIA Electric Power Monthly, Table 5.6.B (preliminary). Bills: EIA 2024 average monthly residential bill. Your bill depends far more on your home, climate and heating type than on the state average.

What uses the most electricity in a home?

Cooling and heating. EIA's 2025 estimate puts space cooling at 17.3% of U.S. home electricity and space heating at 14.1%, followed by water heating (8.5%) and refrigerators and freezers (8.0%). Lighting is only 3.4%. The largest slice, 44.5%, is all other uses: washers, dryers, dishwashers, cooking and many smaller devices. In EIA's words, “air conditioning is the largest use of electricity in homes”.

Your home may differ: gas heat takes those slices off your electric bill, while electric heat or a pool pump can dominate it. Measuring beats guessing.

How to find your own biggest energy users

• Check your utility account. With a smart meter, the app may show use by hour; a daily spike points to the culprit.
• Read the yellow EnergyGuide label on big appliances. ENERGY STAR says to use it to “estimate annual operating costs”.
• Measure plug-in appliances for a few days each: fridge, freezer, dehumidifier, space heater, the TV corner.
• Know the limit. Plug-in monitors handle ordinary 120-volt outlets only; the Tapo P115 is rated “15A, 1800W”. Central AC, an electric range, a water heater and most electric dryers are hard-wired or 240-volt; use the bill or nameplate for those.

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Rather not use an app? The Kill A Watt EZ shows usage on its own screen and, per its maker, “Calculates cost and forecasts by week, month and year”.

A professional home energy audit

For drafts, insulation and ducts you can't see, ask your utility about a home energy assessment. ENERGY STAR also points to its online Home Energy Yardstick to measure your home's performance.

How much does it cost to run an appliance?

Watts × hours a day ÷ 1,000 = kWh a day. Multiply by 30 for a month, then by your price per kWh. A 1,500-watt space heater run 8 hours a day uses 360 kWh a month: about $65 at 18.19 cents. Find the watts on the appliance label, then try your own numbers:

Anything that heats, cools or runs for hours dominates; a phone charger barely registers.

Heating and cooling: the biggest lever

ENERGY STAR puts it plainly: “Nearly half of the energy used in your home goes to heating and cooling.” Start here:

• Air filter: “Check your filter every month, especially during heavy use months (winter and summer).” And “At a minimum, change the filter every 3 months.”
• Schedule: let the temperature drift while you sleep or are out. A smart thermostat does it for you; ENERGY STAR says homes with high heating and cooling bills, or empty for much of the day, “can save approximately $100 a year with an ENERGY STAR certified smart thermostat.”
• Ducts: sealing and insulating ducts in the attic or crawlspace can raise system efficiency “by as much as 20 percent”, per ENERGY STAR.
• An old system: ENERGY STAR suggests a professional check once equipment is over 10 years old, and fixing big air leaks before replacing it.

Ceiling fan direction for summer and winter

“In the summer, use the ceiling fan in the counterclockwise direction.” “In the winter, reverse the motor and operate the ceiling fan at low speed in the clockwise direction.” ENERGY STAR adds that “Ceiling fans cool people, not rooms.” Turn the fan off in an empty room and nudge the thermostat when it runs.

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Drafts, doors and windows

Sealing air leaks and adding insulation can “provide up to a 10% savings on your annual energy bills”, ENERGY STAR says, and “Simple fixes include installing weather stripping on doors and caulking around windows”. Look for daylight under exterior doors and feel for cold air around windows on a windy day.

Water heating

Water heating is 8.5% of U.S. home electricity, per EIA. The free fix is the thermostat: the U.S. Consumer Product Safety Commission “urges all users to lower their water heaters to 120 degrees Fahrenheit”, adding that “this decrease in temperature will conserve energy and save money”. CPSC's point is scald prevention too. Our tip: on an electric tank the thermostat sits behind a panel, so switch off the breaker first, or ask a plumber.

Replacing a tank anyway? ENERGY STAR points to heat pump water heaters, which need an indoor space that stays between 40 and 90°F year-round. And when the washer is due, ENERGY STAR certified models “use about 20% less energy and about 30% less water than regular washers.”

Does unplugging appliances save electricity?

A little, and less than most people think. Standby power, in Lawrence Berkeley National Laboratory's words, “is the electricity consumed by devices when they are switched off or not performing their primary functions.” LBNL says “Most products draw relatively little standby power”, under 0.5 watts, but “Together these amount to 5-10% of residential electricity use.”

Our math: one device drawing 0.5 watts all year uses 4.38 kWh, about $0.80 at 18.19 cents. Unplugging one charger saves pennies. The real target is the cluster that stays half awake: TV, console, cable box, sound bar, desktop computer. Measure it, then put it on a strip you switch off.

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Do plug-in power savers like StopWatt work?

We found no independent lab test of StopWatt itself, so we make no claim about that brand. What we can say: you pay for the kWh your appliances use, and a box plugged into one outlet does not change what a fridge or an air conditioner needs. In UK tests of four unnamed plug-in savers, power use went up.

VERIFY reported in March 2024 that Buckinghamshire and Surrey Trading Standards in England had tested four plug-in electricity-saving devices and found that “electrical consumption actually increased when using the products”, along with “poor construction and access to live parts”.

The honest test costs little: measure an appliance for a week with an energy-monitoring plug, add the box, and measure another week. The same test applies to dirty-electricity filters sold to lower bills.

Lighting and appliance upgrades

ENERGY STAR's rule for bulbs: “To save energy, find the bulbs with the lumens you need, and then choose the one with the lowest wattage.” The Sylvania LED in our table gives 800 lumens at 8.5 watts, its listing says. In place of a 60-watt bulb on 3 hours a day, that saves about $0.84 a month at 18.19 cents in our example. Small per bulb, so start with the lights on longest.

Replacing a working appliance rarely pays off fast: ENERGY STAR says certified refrigerators are “about 9 percent more energy efficient than models that meet the federal minimum energy efficiency standard”. Keep yours running well with our fridge care guide and check the energy section of our dishwasher buying guide before you replace. A dryer that needs two cycles may just need a clean vent or wool dryer balls. For the kitchen, see our toaster oven comparison and stove type guide.

What to fix first, and the tools that help

Everything below targets real kWh. All were in stock, with a buy box, for delivery to New York when we checked on October 10, 2026.

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Help paying the bill, and tax credits

If the bill is the problem now, call your utility before it is late and ask about payment plans, budget billing and assistance. The federal Low Income Home Energy Assistance Program also helps: “LIHEAP provides federally funded assistance to reduce the costs associated with home energy bills, energy crises, weatherization, and minor energy-related home repairs.”

On tax credits, the IRS says of the Energy Efficient Home Improvement Credit: “You can claim the credit for improvements made through December 31, 2025.” Upgrades made in 2026 don't qualify, so check your utility and ENERGY STAR's rebate finder for local offers.

Questions people ask

Keep reading

• Refrigerator benefits, drawbacks and care
• Are smart fridges worth it?
• How to clean a dryer vent
• All major appliance guides
• All small appliance guides