How to actually cut your electricity bill: every fix, ranked by dollars

Most "save electricity" lists are padded with advice that saves pennies. This one is ranked by what each change is actually worth per year, using government figures (DOE, ENERGY STAR, EIA) and the 2026 average residential rate of about 18.2¢/kWh. The typical US home uses roughly 10,800 kWh a year — call it a $1,900–$2,000 electricity bill — and where that power goes tells you where the money is: air conditioning ~19%, space heating ~12%, water heating ~12%, refrigeration ~8%, lighting ~6%. So the big savings live in exactly three places: the thermostat, the water heater, and the stuff that runs 24/7. One number first, though: every kWh you save is worth your rate, not the national average — in California or New England each saved kWh is worth roughly twice what it is in Washington state. Start by finding your true rate.

Tier 1: heating and cooling — nearly a third of the bill

Cooling plus electric heating is over 30% of household electricity, before counting fans and air handlers. Four moves, in order of effort:

• Use setbacks — worth up to 10%. DOE's long-standing figure: turning the thermostat back 7–10°F for 8 hours a day (while you're at work or asleep) saves as much as 10% a year on heating and cooling. It's the single highest-value habit on this list and costs nothing. One honest caveat: with a heat pump, deep setbacks can trigger expensive backup resistance heat — use smaller ones, or a thermostat that manages the recovery.
• A smart thermostat — about $50/yr. EPA's measured average for ENERGY STAR certified models is roughly 8% of heating and cooling bills. It's mostly automating the setbacks above, so don't count both savings twice.
• A ceiling fan — lets you raise the setpoint ~4°F. DOE: a fan lets you set the AC about 4°F warmer with no comfort loss. Fans cool people, not rooms — running one in an empty room saves nothing and costs a little.
• Air sealing + attic insulation — ~15% of heating and cooling costs. EPA's estimate for sealing leaks and topping up attic/crawl-space insulation. This one costs real money and a weekend (or a contractor), but unlike gadget savings it compounds: it cuts every heating and cooling bill you'll ever pay in that house, whatever the fuel. What an air conditioner itself costs to run where you live is in our AC cost calculator.

Tier 2: the water heater — the appliance everyone forgets

Water heating is typically a home's second-largest energy expense, and ~12% of electricity use where the heater is electric. Three moves:

• Turn it down to 120°F. Many heaters ship set to 140°F. DOE's estimate: dropping to 120°F saves $36–$61 a year in standby losses alone and up to ~$400 where usage losses are high (those dollar figures are DOE's long-standing ones, so treat them as conservative at 2026 rates). 120°F is also the scald-safety setting.
• Wash clothes cold. ENERGY STAR: about 90% of a clothes washer's energy goes to heating water. Modern detergents are formulated for cold; even hot→warm halves the energy per load.
• Shorter showers and a low-flow head. Unglamorous, works — every litre of hot water you don't use is water the tank doesn't reheat. And when the heater eventually dies, replace it with a heat-pump water heater: same trick as a space heat pump, it moves heat instead of making it, and cuts water-heating electricity by well over half.

Tier 3: the stuff that never turns off

• Phantom loads — roughly 5–10% of your bill. Lawrence Berkeley National Laboratory's research (2000s-era, still the canonical estimate) put standby power at 5–10% of residential electricity — $100–$200 a year for a typical home today. The fix isn't unplugging everything; it's finding the few real offenders: old set-top boxes, AV receivers, desktop PCs left on, garage beer fridges (next point), anything warm to the touch while "off". A smart power strip on the TV stack handles the worst cluster automatically.
• Retire the second fridge. The average second refrigerator runs ~500 kWh a year — about $90 at 2026 rates — and an old 1990s unit in a hot garage can draw 1,000–1,500 kWh, or $180–$270 a year, to chill a dozen cans (our maths, at EIA's 18.2¢ average). If it mostly stores space, unplug it; if you genuinely need it, a modern ENERGY STAR unit uses a third of the power.
• Lighting — only if you're still on old bulbs. LEDs use at least 75% less energy than incandescents and last up to 25× longer, but honesty requires saying this tip is mostly finished: lighting is down to ~6% of home electricity precisely because most homes already switched. If yours hasn't, it's the fastest payback on this page; if it has, move on.

Tier 4: big-ticket items — huge if you have them

• Pool pump. If you still run an old single-speed pump, a variable-speed replacement cuts pump energy by up to ~70% (DOE's standards analysis — hundreds of dollars a year). New pumps sold since DOE's 2021 standard are largely variable-speed already, so the windfall belongs to owners of old equipment. Also trim run-time: most pools don't need 8+ hours a day.
• The dryer. About 4% of home electricity (~770 kWh/yr on average, ~2–4 kWh per load). A clothesline is free; a heat-pump dryer uses 28–70% less depending on the model (ENERGY STAR — full heat-pump models sit at the ~70% end).
• An EV in the driveway. Charging adds 2,000–4,000 kWh a year — the savings play is when and at what rate you charge, not whether. See the next section, and our EV charging calculator for your state.

What doesn't move the needle

Three staples of listicles that fail the arithmetic:

• Unplugging phone chargers. A modern charger idles below a tenth of a watt — under 1 kWh a year, roughly 15¢. Unplug things that are warm, not things that are small.
• Closing vents in unused rooms. It doesn't reduce what the system produces; it raises duct pressure, increases leakage, and can genuinely harm a heat pump or modern furnace. Close doors, not vents.
• Plug-in "power saver" boxes. Devices sold as whole-home current-optimising magic are, at residential scale, a scam. Nothing you plug into one socket can cut consumption in the rest of the house.

Cut the rate, not just the kilowatt-hours

The other half of the bill is the price you pay per kWh, and it's often the easier win:

• Time-of-use plans. If your utility offers one, running the dishwasher, laundry and especially EV charging off-peak can cut what those loads cost by half without saving a single kWh.
• Shop your retailer. In deregulated states (Texas above all), the spread between a lazy default plan and a good one can be several cents per kWh — worth more than most items on this page combined.
• Demand-response programs. Many utilities pay you (bill credits) for letting them nudge your thermostat or water heater a few peak afternoons a year.

The ranked table

Percentages are of the relevant slice of a typical bill, not the whole bill; dollar figures assume EIA's 18.2¢/kWh 2026 average — scale up or down for your state.

And then there's making your own

Everything above shrinks the number of kilowatt-hours you buy. The structural move is changing what each one costs you — which is what rooftop solar does, and why it pays fastest exactly where rates are highest. If your bill survives this list intact, run the payback for your state — and if you heat with gas, check whether a heat pump beats your furnace at your local prices before the next replacement cycle forces the decision.