Sources of Stored Energy

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Energy is stored in many ways. Energy is stored in food. We eat the food to get energy. Energy can also be stored in other ways, such as batteries. Want to learn more? Read on.

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Sources of Stored Energy

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Sources of stored energy take many forms like food, fuel and batteries. All energy on the Earth comes from the Sun.

Sun Energy

Heat from the sun warms everything on the Earth. Light and heat are forms of energy, which come directly from the Sun. Plants, use the energy from sunlight to make food. Energy from the sun is stored in leaves, stems, roots and fruits. When an animal eats plants it gets the energy stored inside the plant.

Food Energy         Energy from Plants             Animals eat plants for energy

Animals eat plants and get the energy stored in plant tissues. They utilize this energy for various activities like running, climbing, hunting and keeping warm. Food we eat contains energy to power our bodies.

Fuels such as oil and coal contain huge amounts of energy. Energy released from these fuels, wind and water can be changed into electricity. Energy is needed for almost all activities that make up our lives.


Energy in fossil fuels came from the Sun. Like plants, trees store energy from the sun, when wood is burnt; the stored energy is released as heat. All living organisms store energy. When they die, their bodies are slowly buried under soil and rock, over millions of years later, the material turns into oil and coal. This is called as fossil fuel. Gasoline, heating oil and tar are made from fossil fuels, and fossil fuels are burned to release energy.

Fuels for energy


In nature energy is stored in the form of food and fuel. You can also store energy in a battery. Batteries are filled with chemicals, which contain energy.

Batteries store energy

The energy in the chemicals is converted into electricity. This energy is used to play music or to run a wristwatch. We can store energy in a battery, used in flashlights calculators and radio. These batteries supply the required energy to run these devices. Some batteries have to be replaced; some can be recharged or refilled with energy.

Battery powered Flashlight                Battery powered calculator       Battery powered calculator              Battery powered radio


In order to perform any physical activity like rowing, swimming or running we need energy.

Physical activity and energy                                   Swimming and energy

To get this energy, we eat foods such as sandwiches, spaghetti and fruits. All this food got its energy from sunlight.

Fruit and energy      Fruit and energy

All forms of energy are stored in different ways, in the energy sources that we use every day. These sources are divided into two groups -- renewable (an energy source that can be used again and again) and nonrenewable (an energy source that we are using up and cannot be recreated in a short period of time). Renewable energy sources include solar energy, which comes from the sun and can be converted into electricity and heat. Wind, geothermal energy from inside the earth, biomass from plants, and hydropower from water are also renewable energy sources.

Renewable and non renewable energy


Oil, Gas, and Coal Energy

Over 80 percent of the world's energy comes from burning fuels such as oil, natural gas and coal. These fossil fuels were formed millions of years ago from the dead remains of plants and animals. These fuels are burned to create heat and electricity. Since it took millions of years to create these fossil fuels, we are using them faster than they are being created. These fuels will eventually be used up and disappear. This has led many people and companies to start developing more renewable forms of energy.

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