To cut your electric bill by 90%, you must eliminate your reliance on the power grid. This requires a combination of aggressive home efficiency measures and installing a self-generation system (like rooftop solar) paired with a home battery.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
The Top Energy-Draining Appliance: Space Heating & Cooling
This includes both forced-air systems, heat pumps, furnaces, baseboards, window A/C units, and fans. Because they run for long periods and often at high wattage, they dominate the consumption profile.
If you watch a lot of TV you probably won't want to be constantly unplugging and plugging in every component of your entertainment system. But since all those different elements add up on your power bill over time, it's a good idea to unplug when you know you won't be using them for a while.
Gregor recommends unplugging microwaves, coffee makers, toasters, blenders, food processors, kettles, slow cookers, rice cookers, and ice makers — pretty much any small kitchen appliance. Appliances with an auto timer are especially important to unplug, according to Tom Jameson, owner of AstroWatt Electric.
Yes, you can usually flush a standard gravity-flow toilet during a power outage. Because it relies on gravity and not electricity to operate, it will work as long as water is available to refill the tank. However, there are a few important exceptions depending on your home's setup:
In most households, Heating and Cooling (HVAC) systems consume the most electricity, accounting for roughly 40% to 50% of your total energy bill.
Idle Appliances
Common culprits include TVs, cable boxes, printers, phone chargers and kitchen appliances. Even when powered down, these idle appliances consume electricity that shows up on your energy bill.
The fix: Lower your home temperature to 68 degrees when you're home. Maintain comfort by adding extra layers of clothing – try fabrics like fleece, flannel and wool – and don't forget comfy slippers and blankets. If you can comfortably go a degree or two cooler than 68, your wallet will benefit even more!
Running a 500-watt device costs approximately $0.09 per hour based on the 2026 U.S. national average residential electricity rate of 17.91 cents per kWh.
If there was a recent spike in your electric bill, these are the most likely reasons:
Unplug energy vampires when not in use, such as televisions, game consoles, and standby coffee makers. Use a fan(s) instead of your air conditioner. Cover your windows to keep sunlight from heating your home. Cook using your stove, microwave, or outside grill instead of your oven.
Yes, it is cheaper. According to the Department of Energy Programmable Thermostats guide, dropping your thermostat by 7∘F to 10∘F for 8 hours a day (like when you are at work) can reduce your heating bill by roughly 10%.
When is it cheaper to use electricity? Off-peak hours can vary between suppliers, where you live and the time of year. For our Economy 7 tariffs and two rate meters, the cheaper night-time rate runs for 7 hours between midnight and 8am.
Heating and cooling systems (HVAC)—such as central air conditioning and electric furnaces—use the most electricity in a home, accounting for about 40% to 50% of your total energy consumption.
The Argument for Leaving the Heating On
This approach might seem convenient, as it avoids the discomfort of waiting for the house to warm up. However, most experts agree that it's usually cheaper to heat your home only when you need it.
Electric heating systems and tumble dryers tend to be the most expensive electrical items to run because they use large amounts of power over extended periods. Other high-cost appliances include electric ovens and immersion heaters.
You should unplug any countertop kitchen appliances that produce heat or have digital displays when not in use. This includes toasters, air fryers, coffee makers, and microwaves. Unplugging them prevents electrical fires, protects against power surges, and stops phantom energy drain.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
A toaster draws a lot of power while running (between 800 and 1,500 watts), but because it only operates for 2 to 4 minutes per use, its overall electricity consumption is quite low.
Filling your bathtub with water provides an immediate, gravity-fed emergency water supply. This reserve is primarily used to manually flush toilets, wash hands, and clean. If the outage cuts off power to water treatment plants or home well pumps, this water becomes essential for basic sanitation.
Showering and Bathing: A standard shower uses 2–5 gallons per minute, with an average 8-minute shower consuming 16–40 gallons. Baths can use 30–50 gallons per fill. Toilet Flushing: Modern low-flow toilets use 1.6 gallons per flush, while older models may use 3–5 gallons.
To force a toilet to flush, grab a bucket or pitcher and quickly dump about 1 to 2 gallons of water directly into the toilet bowl. The rapid volume of water creates the necessary downward pressure to trigger the siphon effect and force everything down the drain.