Where Does Electricity Come From? A Simple Guide for Homeowners

Key Points of This Article:

• Electricity comes from a mix of energy sources such as natural gas, nuclear power, coal, wind, solar, and hydropower, all of which generate electricity that flows into the shared U.S. power grid before reaching homes.

• Most U.S. electricity today comes from dispatchable sources. Primarily natural gas, coal, and nuclear power, which together supply around 75% of national electricity generation.

• Homeowners typically receive a blended mix of electricity sources, which changes throughout the day based on demand, weather, and which power plants are operating; individual homes cannot choose the exact electrons they receive from the grid.

What Is Electricity and How Does It Work? 

Electricity is the flow of tiny charged particles called electrons that carry energy from one place to another to power the lights, appliances, and devices in your home. 

Electricity only works when it moves through wires to a device that is turned on. Your home's wiring carries the electricity from the breaker panel to your outlets and switches each time you turn on an appliance. The breaker panel helps control and protect that flow. When you turn on an appliance, it uses that electricity to do something useful, like cool the air, heat food, spin a motor, or light a bulb. 

Where Was Electricity Invented? 

Electricity was not invented in one single place. It was discovered and studied over time by many scientists in different countries. According to the U.S. Energy Information Administration, early discoveries about electricity go back to the 1600s, when scientists began studying static electricity.  

In the 1700s, Benjamin Franklin showed that lightning is a form of electricity. In the late 1800s, inventors like Thomas Edison and Nikola Tesla helped develop systems that could safely generate and deliver electricity to homes and cities.  

Electricity has always existed in nature. Humans simply learned how to harness it. Today, electricity is part of daily life in almost every U.S. home, from lights and phone chargers to kitchen appliances.  

According to the U.S. Energy Information Administration, electricity is part of daily life in nearly every household. In 2024, 42% of U.S. households reported electricity as their main space-heating fuel, showing that electricity isn't just common, it's essential. 

What began as scientific discovery centuries ago is now something nearly every household depends on every single day. 

What Is the Power Grid, and How Does It Work? 

The power grid is the system that carries electricity from power plants to homes like yours. And if you're wondering where electricity comes from, the power grid is one of the first places electricity is stored and moved before it's brought to your home. 

Electricity may come from natural gas, nuclear energy, wind, or solar power, but once it is generated, it must travel through a connected network to reach your home. That network is called the power grid. 

The grid includes high-voltage transmission lines that move electricity across long distances, substations that adjust voltage levels, and local distribution lines that deliver power to neighborhoods. According to the Environmental Protection Agency (E.P.A), the electricity grid is made up of 7,300 power plants, nearly 160,000 miles of high-voltage power lines, and millions of miles of low-voltage power lines and distribution transformers! 

Another important role of the grid is balance. Electricity has to be produced at the same moment it is used. When millions of air conditioners turn on during a heat wave, more power plants must quickly generate electricity. When demand drops at night, generation slows down too. 

So, when you ask where electricity comes from, the full answer includes electricity coming from both the power plant that generates it and the grid that delivers it safely to your home. 

Where Does Electricity Come From? 

According to the U.S Energy Information Administration, most homes in the US get electricity from several sources at once, including natural gas, nuclear power, coal, wind, solar, and hydropower. 

Your home almost never receives power from just one source. The electricity mix can change throughout the day depending on demand, weather, and which plants are running.  

If you're still wondering where electricity comes from, here's a simple breakdown of the different energy sources that generate it:  

Natural Gas 

According to the U.S. Energy Information Administration, natural gas currently provides the largest share of electricity in the country of about 43%. This means that natural gas is the largest source used to create electricity in the United States, and it likely means natural gas is the primary resource from where your electricity comes from. 

Natural gas generates electricity by being burned to create very hot gases. That heat spins a large turbine connected to a generator, and when the turbine spins, the generator produces electricity that flows into the grid.  

Natural gas plants are widely used because they can adjust electricity output relatively quickly when demand changes, such as during a hot summer afternoon when many homes are running air conditioning at the same time. 

Nuclear Power 

Nuclear power creates electricity by producing heat through a controlled reaction inside a reactor. That heat from the reactor turns water into steam, and the steam spins a turbine connected to a generator.  

Even though nuclear energy is very different from natural gas or coal, the final step is similar. When generating electricity from nuclear energy, a turbine spins, a generator turns, and electricity is created. Nuclear plants often run steadily throughout the day and night, helping provide consistent power to homes, making it an extremely efficient source to make electricity from. 

Coal 

Coal also generates electricity by being burned to create heat. The heat turns water into steam, which spins a turbine connected to a generator.  

While coal once supplied a much larger share of electricity in the United States, its role has declined in recent years. It's reported that between 2021 and 2023, electricity generated from coal decreased by 23% in the U.S. 

But in some regions, coal still contributes to the overall mix that supports homes and businesses with their electricity needs.  

Wind Power 

Wind power creates electricity using moving air instead of fuel. When the wind blows, it turns large turbine blades and those blades spin a shaft connected to a generator, and the generator produces electricity.  

Wind energy depends on weather conditions, so output can vary from hour to hour. When wind speeds are strong, wind farms can supply a meaningful share of electricity to the grid with about 21% of utility-scale electricity generation coming from renewable energy resources like wind and solar power. 

Solar Power 

Solar panels generate electricity by converting sunlight directly into electrical current. When sunlight hits the solar cells inside a panel, it creates an electric flow. That electricity can power a home directly or flow into the grid to be shared.  

Solar production is highest during sunny daylight hours and lower at night or on cloudy days. Because of its weather-dependent characteristics, solar energy is only sparsly used in electricity generation. 

Hydropower 

Hydropower produces electricity by using moving water to spin turbines. Water flowing through a dam or river channel turns turbine blades, which spin a generator and create electricity.  

Hydropower can provide steady energy when water levels are consistent, though output may change depending on seasonal rainfall and river flow.  

While hydropower isn't used widely throughout the U.S for consistent electricity generation, the state of Washington produced 27% of all U.S. hydropower capacity in 2023, making it by far the largest hydropower‑producing state in the country. 

What This Means for Your Home 

No matter where your electricity comes from, most large-scale generation follows the same basic idea. Something spins a generator, and that generator produces electricity. By the time it reaches your home, it all works the same way, and where your electricity comes from, or its source, doesn't really have an effect on how well that electricity powers your home and appliances. 

Your home does not receive electricity from just one source. It draws from a shared mix of energy sources working together to keep power reliable throughout the day. 

Where Does Most U.S. Electricity Come from Today? 

According to recent data from the U.S. Energy Information Administration, the three main dispatchable sources of electricity generation come from natural gas, coal, and nuclear power plants, which account for about 75% of total U.S. electricity generation in 2025. 

Dispatchable simply means these power plants can be turned up or down as needed. When demand rises, such as during a summer heat wave or a winter cold snap, these sources can adjust to help keep electricity flowing to homes. 

Renewable sources like wind, solar, and hydropower also contribute, but their output can vary depending on weather conditions and only makes up about 21% of the overall electricity commodity mix. 

For homeowners, this means most electricity still comes from sources that can respond quickly and reliably when your home needs power. That reliability is a key reason the system continues to depend heavily on energy resources like natural gas, coal, and nuclear energy. 

What States Get Electricity from Canada? 

Some U.S. states import electricity from Canada, especially states that share a border and have strong grid connections. According to 24/7 Wall St., states that commonly import electricity from Canada include New York, Michigan, Minnesota, and several New England states such as Maine, New Hampshire, and Vermont. 

If you live in a northern border state like Michigan or Minnesota, it is normal for some electricity to flow across the border at certain times. The power grid in North America is highly connected, which allows electricity to move between regions when needed. This helps balance supply and demand and supports reliability during periods of high use. 

Where Does Each State Get Its Electricity? 

If you're wondering where electricity comes from in your individual state, we've got you covered. 

The chart below shows the top electricity generation sources by state in 2024, based on official data from the U.S. Energy Information Administration. The percentages in this chart represent each source's share of the total in-state generation: 

Natural gas leads the nation as the primary electricity source, topping the list in 30 states! Coal remains the main source in 11 states, while wind (5 states), hydropower (3 states), and nuclear (2 states) make up the remaining top contributors.  

When it comes to electricity generation, there's a strong national dependence on natural gas, alongside regional differences shaped by local resources and infrastructure. 

Does the Midwest Make Enough Electricity for Itself? 

The Midwest produces enough electricity annually to power all homes in the region. 

If you are running your air conditioner on a hot summer day or turning up the heat during a cold winter night, the system is built to handle it. Power plants across Midwest states generate large amounts of electricity every day to meet what homes are using. 

Some Midwest states, like Illinois, even produce more electricity than their homes and businesses need and send extra power to other states through the regional grid. According to the U.S. Energy Information Administration, Illinois is one of the top electricity-producing states in the country and regularly exports electricity. 

Midwest homes are supported by a strong and connected energy system. Even during high-use seasons, there is enough electricity being generated to keep homes powered and comfortable. 

How To Find Out Where Your Electricity Comes From 

If you're really curious about where your home's electricity comes from, you can locate your home's energy mix using a few simple steps: 

Step 1: Check for an "Electricity Supply" or "Fuel Mix" Section on Your Electricity Bill 

Your electricity bill may include a short breakdown of energy sources, often called a fuel mix, power mix, or generation mix. Give your bill a quick scan, and if you see it, it may list percentages like natural gas, nuclear, coal, wind, or solar. 

Step 2: Find Your Utility's Name on Your Bill 

No dedicated section on your bill that details the commodity mix? No worries! Next, check who delivers your electricity. If you get your electricity supply from your local utility, they might have information on their website about where they source their electricity. 

Start with their name and poke around on their website. 

Step 3: Find your Supplier's Name on Your Bill 

If you live in a state with energy choice, your bill may also list your electricity supplier if you choose one. Figure out who they are by looking at your electricity bill and then visit their website, where they might have information on where their electricity is from. 

If you don't live in a market where you can choose your energy supplier, your supplier is likely your main utility. 

Step 4: Review Official State Energy Data 

Visit the U.S. Energy Information Administration website and look for electricity information about your state. The site publishes official data showing how electricity is generated and which energy sources are most commonly used in each state. 

Even when you know the mix, your electricity still comes through a shared grid. That means your home is pulling from a blend of sources being used at that moment, not one single power plant. 

Can You Choose the Exact Electricity That Reaches Your House? 

You cannot choose the exact electricity that reaches your house, and this is true in both regulated and deregulated markets. Once electricity enters the grid, it becomes part of a shared system that serves everyone connected to it.  

Electricity from many power plants flows into the same network of lines, substations, and transformers. Your home pulls what it needs from that shared flow, just like your neighbors do.  

What changes between markets is the billing setup, not the wires. In some states, you may be able to choose an alternate electricity supplier (often called retail choice), but the electricity still comes through the same local grid that delivers power to your home.  

If you choose a renewable option, it usually supports renewable generation through tools like renewable energy credits, which are tied to renewable electricity that is generated and delivered to the grid. 

How Does the Source of Electricity Affect How Much You Pay for Electricity? 

The type of energy used to generate electricity, such as natural gas, coal, nuclear, or renewables, plays a role in the overall energy system, but your electric bill is not influenced by the source from which your electricity is made. 

Electricity prices are influenced more by broader factors like supply and demand, fuel markets, weather patterns, and overall grid conditions. According to the U.S. Energy Information Administration, fuel costs, seasonal demand, and regional market conditions all affect electricity pricing. 

For example, during a widespread heat wave, millions of homes across several states may turn on air conditioning at the same time. That higher demand can put pressure on the electricity grid and affect wholesale electricity prices. The same can happen during very cold winters when heating demand rises if you heat your home with electricity. 

So, if your bill increases in July or January, it is usually not because one fuel source changed overnight. It is more often a combination of higher usage in your own home and higher demand across the region. 

Aside from demand, energy use in your individual home can also affect your electricity bill. For most homeowners, your bill comes down to a few clear parts: how many kilowatt-hours you used, the supply portion of your bill, and the delivery charges from your local utility. Since the supply portion can move up and down throughout the year, it's normal to want a little more stability. 

That's where Santanna's Unlimited Energy plan can help. This plan offers a flat monthly supply charge that stays the same for the length of your agreement.* This can help reduce uncertainty on the supply portion, even though delivery charges and taxes may still vary with usage. 

Understanding how pricing works can make seasonal changes feel less confusing and help you plan ahead with more confidence. 

The Future of U.S. Electricity: What's Changing (and Why It Matters to Homeowners) 

The way electricity is made in the United States is slowly changing. 

Right now, most electricity still comes from natural gas, coal, and nuclear power. Wind and solar energy are growing too. That means more electricity is being made from the sun and wind than before. 

Wind and solar are clean energy sources, but they depend on the weather. The wind has to blow, and the sun has to shine. That is why other sources like natural gas and nuclear are still important. They can run anytime to help keep electricity steady. 

Electricity use is also growing. More people are driving electric cars, using electric heat, and charging more devices every day. That means the country needs more reliable power. 

Why This Matters to Your Home 

For homeowners, the goal does not change. When you flip a switch, electricity should work. 

Even as energy sources shift and new technology is added, the power grid is designed to keep homes running safely and reliably. Understanding these changes helps you feel more confident about where your electricity comes from and how the system supports your home now and in the future. 

FAQs  

Is electricity renewable or nonrenewable? 

Electricity itself is neither renewable nor nonrenewable. It is a "secondary energy source" that can be made from renewable sources (like wind or solar) or nonrenewable sources (like natural gas or coal). 

Who controls the electricity grid? 

No single company controls the whole grid. Day to day, the transmission system is operated by utilities and, in many regions, independent grid operators called ISOs/RTOs, while reliability standards are set by NERC and overseen by FERC. 

Can electricity run out? 

Electricity does not "run out" like water in a tank, but the grid can run short if demand is higher than supply or if equipment fails. Because electricity can't be stored economically on a large scale, supply and demand must stay balanced in real time, and shortages can lead to outages. 

Which power sources contribute to pollution? 

Power plants that burn fossil fuels, especially coal and natural gas, can release air pollutants and greenhouse gases when generating electricity. In the United States, federal air quality rules limit how much of certain pollutants power plants can release. 

Electricity is generated from sources like natural gas, nuclear energy, wind, solar, and water, then delivered through a shared grid to your home. It is made and balanced every day to match what homes are using. 

When you understand this, your bill feels less confusing. You can better see how usage, seasons, and fuel costs all connect. 

At Santanna, we are here to help ensure homeowners feel informed, confident, and supported in understanding the energy that powers their lives. 

If having more predictable supply charges would help with budgeting, you can explore options like Santanna's Unlimited Energy plan, which offers same monthly amount for your electricity or natural gas supply without any uncertainty for the length of your agreement.* 

* Restrictions apply. Enrollment based upon program eligibility. Customers using more than 125% of normal monthly usage as determined by Santanna may be required to switch plans.