Heating and cooling (HVAC) systems use the most electricity in most homes, often consuming around 40% or more of total energy, followed by water heating, then major appliances like refrigerators, clothes dryers, and ovens/stoves. Electronics, lighting, and laundry also contribute, with standby power (phantom load) from devices adding up, but HVAC remains the biggest consumer by a significant margin.
Heating and cooling (HVAC) typically runs up an electric bill the most, often accounting for around 40% of energy usage, followed by water heating, large appliances like refrigerators and clothes dryers, and lighting. The biggest energy drains are systems that change air temperature (furnaces, air conditioners) and appliances that heat water (showers, dishwashers) or run for extended periods (dryers, fridges).
1. Shower. Specifically electric showers have the highest consumption. To save on your showers, take shorter showers and avoid scalding temperatures.
Switch your kettle off at the wall when not in use
Does leaving a kettle plugged in use electricity? Yes. And while this won't add up to riches, making sure your kettle is turned off at the plug can help you save some pennies.
For the average household using 880 kWh per month, lighting accounts for around 38 kWh while TVs account for around 30 kWh. At the average utility rate of 17 cents per kWh, that amounts to $6.46 per month for lighting and $5.10 per month for TVs.
The average household runs a television for 3 hours per day. At 3 hours per day, the average household uses approximately 493 Wh per day or 164 watts per hour. If you keep your TV running all day at that 164 watts per hour average, you'll use nearly 4kWh of electricity in 24 hours!
Space Heaters
Because their primary function is to create heat, space heaters should always be turned off as soon as you're done using them and unplugged as soon as possible. Even if they aren't actively running, leaving a space heater plugged into the wall can pose a fire risk, so it's best to play it safe.
Many appliances continue to use electricity even when they are shut off. The same goes for all those chargers, whether or not they are charging a smartphone. Everything you leave plugged into an outlet—appliances, computers, consoles, chargers, lamps, and more —draws energy even when not in use.
Many energy experts point to a "sweet spot" between 10pm and 8am as prime time for cheaper rates. Some even suggest a sweet spot between 7am and 8am if you prefer not to run your machine overnight.
Microwaves, coffeemakers, toasters, and electric kettles often have clocks, digital displays, or sensors that remain active even when the appliances aren't being used. These features, while handy, drain energy continuously.
Most modern washers use 0.5–1.0 kWh per standard load, so expect ~13–26p for an hour, more for hot cotton cycles. Your user manual should list exact wattage or energy-per-cycle figures.
Here are some home energy savings tips to lower your electric bill:
Heating and cooling (HVAC) typically runs up an electric bill the most, often accounting for around 40% of energy usage, followed by water heating, large appliances like refrigerators and clothes dryers, and lighting. The biggest energy drains are systems that change air temperature (furnaces, air conditioners) and appliances that heat water (showers, dishwashers) or run for extended periods (dryers, fridges).
What Can I Unplug? These Household Items Cost the Most Electricity
Depending on the model and efficiency, a one-ton AC uses about 1.2 kWh/hour, while a 1.5-ton AC uses around 1.5 kWh/hour. On average, running an AC for 8 hours a day can add anywhere from ₹1,800 to ₹3,500 per month to your electricity bill, depending on the AC type and your electricity rate.
Leaving a modern device plugged in at 100% charge won't instantly damage it due to built-in overcharge protection, but it can cause long-term battery degradation, reduced lifespan, and overheating from constant "trickle charging," leading to less efficiency and performance over time, though newer devices have optimized charging features to minimize this.
Did you know that when your appliances or electronic devices are plugged in, they're draining energy – even if they're not in use? Phantom power, also called standby power, refers to the energy that's wasted around your home when devices are plugged in and using power, but you're not actively using them.
There is no point in bothering to shut the refrigerator off at night because the appliance is designed to shut itself off when not being used. During the day, the refrigerator works the hardest. Each time the door is opened, warm air rushes in, the fans turn on, the compressor turns on.
Here are the five worst appliances to keep on standby - by turning these off you could save up to £75 a year.
Ranges and Stoves. With cooking as the most common cause of house fires in the US, ranges and stoves are at the top of the list for fire-starting appliances. These essential appliances can become hazards mainly due to unattended use.
Switch appliances off standby
You can turn almost all electrical appliances off at the plug without upsetting their programming. You can also buy standby savers, which let you turn all your appliances off standby in one go to save electricity. Check the instructions for any appliances you aren't sure about.
Incandescent Lighting
90% of the energy they use is given off as heat, and only about 10% results in light. Turning lights off will also keep a room cooler, an extra benefit in the summer.
No, LED lights do not use a lot of electricity; in fact, they are the most energy-efficient lighting technology, using significantly less power (up to 90% less) than incandescent bulbs, lasting much longer, and saving money on energy bills due to their low wattage and high light output. They convert most energy into light, not heat, making them highly efficient.
In a word, no. Outdoor lights nowadays use LEDs rather than filament bulbs which are less energy efficient.