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How Many kWh Does A House Use?

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Have you ever been shocked when opening your monthly electricity bill, wondering where all that electricity could have possibly gone? Most homes today are jam-packed with power-hungry appliances and devices that drain electricity around the clock. With air conditioners running all summer and heaters blasting through winter, monthly electricity costs can easily spiral out of control.

How Many kWh Does A House Use?

But you don't have to suffer through astronomical power bills each month. By understanding exactly how much electricity the average home uses, and taking steps to cut consumption with energy-efficient appliances, proper insulation, and even solar generators, you can take control of your energy usage and save big on electricity costs.

This guide will breakdown typical household electricity consumption (How many kWh does a house use?), how to calculate your home's usage, provide tips to slash your electric bill, and explore using solar generators to tap into free energy from the sun. Let's shine a light on reducing home energy usage and electric bills once and for all!

Understanding Electricity Usage Terms

When examining household electricity consumption, there are a few key terms to understand:

  • kWh (kilowatt hour) - The standard unit used for electricity billing. A kWh is equal to the amount of energy used by keeping a 1,000 watt appliance running for 1 hour.

  • Watt - The rate of energy consumption. For example, a 100 watt light bulb uses 100 watts of power.

  • Kilowatt (kW) - Equal to 1,000 watts. Many appliances list both their wattage and hourly kilowatt consumption.

The kWh is the most common term used to measure home electricity use. Your utility company bills you based on the number of kWh you use each month. By understanding your kWh consumption, you can get a sense of your total energy usage and costs.

Knowing the wattage of your appliances is also useful for estimating how much power they draw. Multiplying an appliance's wattage by the hours used gives you an approximation of its kWh consumption. For example, a 100 watt light bulb run for 10 hours would use 1 kWh of energy (100 watts x 10 hours / 1,000 watts per kWh).

How Many kWh Does A House Use Per Year? - Average Household Electricity Usage

The average American household consumes about 10,800 kilowatt-hours (kWh) of electricity per year. This breaks down to:

  • Daily usage: Roughly 30 kWh per day
  • Monthly usage: Around 900 kWh per month
  • Yearly usage: Approximately 10,800 kWh per year

30 kWh per day is enough electricity to power lights, appliances, heating/cooling systems, and electronics in a typical home. Some homes use less while larger homes with pools, hot tubs and more appliances may use 50 kWh or more per day.

900 kWh per month costs the average household $110 on their electricity bill. But this varies significantly by location, with households in states like Louisiana paying half as much as those in New York and California.

On a national average, a home's electricity costs around $1,300 per year. But families can pay from $800 up to $2,200 annually depending on home size, number of residents, appliances used and location.

What Factors Affect How Many kWh Does A House Use?

The amount of electricity used in a home depends on several factors. The main ones are:


The types of appliances used in a household have a major impact on electricity consumption. Homes with more energy-hungry appliances like electric ovens, clothes dryers and air conditioners use more electricity. Newer Energy Star rated appliances are more efficient. Replacing old appliances with energy efficient models can reduce electricity usage.


Climate and location affect electricity needs. Homes in hotter climates use more electricity for air conditioning in summer. Colder regions use more power for heating in winter. Location also determines how much natural light is available. More daylight reduces the need for lights.

Home Size

Larger homes with more rooms and square footage tend to use more electricity. Larger homes often have more appliances, electronics and lighting. Additional living spaces like finished basements also increase electricity demands. The number of occupants also influences consumption. More people means more electricity used.

Average Appliance Electricity Consumption

Home appliances account for a significant portion of electricity usage in most households. Here are some examples of the average power consumption of common home appliances:


  • A standard refrigerator uses about 100-150 watts on average.
  • A 20 cubic foot refrigerator consumes approximately 1500-2000 kWh per year.
  • New Energy Star certified refrigerators can use up to 20% less power than conventional models.

Air Conditioner

  • A mid-sized window AC unit (10,000 BTU) uses about 1000 watts on the highest setting.
  • Central AC systems use 3500-5000 watts on average.
  • Running an AC unit for 8 hours per day can cost over $300 per month depending on your electricity rate.

Washing Machine

  • Top-loading washing machines use around 500 watts. Front-loading models use 300-400 watts.
  • Running one load on a washing machine consumes about 2-3 kWh.
  • Using cold water instead of hot water can reduce electricity usage for washing clothes by over 90%.

Tips to Reduce Electricity Usage

There are several ways homeowners can reduce their electricity usage and save on utility bills:

Use Energy Efficient Appliances

When replacing old appliances, look for ENERGY STAR certified models which meet strict energy efficiency criteria set by the EPA. ENERGY STAR refrigerators, dishwashers, clothes washers and dryers can be 10-50% more energy efficient than standard models.

Unplug Devices When Not in Use

Many appliances and electronics continue drawing a small amount of power when plugged in, even when turned off. Unplugging devices like phone chargers, laptops and small kitchen appliances when not in use can reduce "vampire" loads. Using power strips makes this easier, with one switch turning off multiple devices.

Add Insulation

Adding insulation to the attic, walls, basement, floors, and crawl spaces can significantly reduce energy loss from heating and cooling. Proper insulation and air sealing can improve efficiency by up to 20%. Consult with local utilities as many offer rebates for insulation upgrades.

Adjust Thermostat Settings

Lowering heating temperatures to 68°F and raising cooling temperatures to 78°F can reduce HVAC costs by up to 10%. Programmable or smart thermostats allow automating temperature adjustments for when no one is home or asleep.

Seal Air Leaks

Cracks and openings allow conditioned air to escape, wasting energy. Seal leaks around windows, doors, pipes and wiring with caulk, weatherstripping and gaskets. Keep windows closed when HVAC is running.

Using Solar Generators

Solar generators provide a renewable way to generate electricity for your home and reduce reliance on the electric grid. These portable power stations contain built-in solar panels that charge the internal battery banks using sunlight. The electricity is then stored until needed to power appliances and devices via AC outlets, USB ports, and 12V car sockets.

Using Solar Generators

Solar generators offer an eco-friendly alternative to gas-powered portable generators. Since they don't require any fuel, they produce no emissions or noise pollution. They can be conveniently set up anywhere with sufficient direct sunlight, such as patios, balconies, and driveways.

By generating a portion of the electricity used in your home, you can lower your energy bills and dependence on utility companies. Solar generators allow you to tap into free renewable energy from the sun rather than solely relying on electricity from power plants. They provide backup power during grid outages to keep essential appliances running.

Investing in a good quality solar generator ensures you can harvest and store enough solar energy to make a noticeable difference in your electricity usage. Models with large solar panel arrays and high capacity batteries can provide a substantial amount of off-grid power day after day.

Sizing and Purchasing Solar Generators

When considering a solar generator system for your home, the most important factors are your typical power needs and budget. The solar generator size must be able to handle the necessary wattage to run your essential appliances and devices. At the same time, larger systems come with a higher price tag.

To determine the right size solar generator, calculate your average daily power consumption. Make a list of the items you want to run on the solar generator, such as refrigerator, phone chargers, TV, lights, etc. Check the wattage requirements of each device and add them together for your total wattage needs. For emergency power, focus on critical loads like fridge, medical devices, phone charging, and lights.

Sizing and Purchasing Solar Generators

As a rule of thumb, solar generators in the 1000-1500W range work for basic emergency loads. For more regular daily use or whole home backup, a 2000-3000W generator provides enhanced capacity.

While solar generators have higher upfront costs than gas generators, they offer silent operation, zero emissions, and free solar recharging. With proper care and maintenance, a solar generator can last 10+ years, offsetting grid usage and saving money in the long run. Consider your unique needs, but for many homes a midsize 1500-2000 watt solar generator offers the best balance of power and price.


In summary, the average US household uses around 900 kWh per month or 10,800 kWh annually. Electricity consumption depends on many factors including the size of your home, number of people, appliances used, and your location. There are many ways to reduce electricity usage through energy efficiency and solar power.

Growatt's portable solar generators provide a clean energy solution to reduce reliance on the grid and lower monthly electricity bills. The Solar Generator INFINITY 1300 and INFINITY 2000 models offer high capacity lithium batteries that can be charged on the go by solar power. With fast charging times and multiple outlets, Growatt makes it easy to tap into solar energy for your home or outdoor adventures.

To learn more about using solar generators and choose the right system for your needs, visit Growatt's website for product specifications, videos, cost savings estimates, and purchase options. Investing in a solar generator can pay for itself over time, while providing security through reliable backup power.

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