What is the main source of energy?

In the modern world, energy is an essential part of our lives. From powering up our home appliances to heating, cooling and lighting our living spaces, energy plays a pivotal role in daily life. So, it is important to understand the different sources of energy available and their individual benefits.

Index of contents
  1. Primary and Secondary Sources of Energy
  2. Renewable and Nonrenewable Energy Sources
  3. Fossil Fuels are the Main Source of Energy Globally
  4. Renewables are Becoming Increasingly Popular but also Expensive
  5. Nuclear Power is a Growing Source of Energy
  6. Conclusion

Primary and Secondary Sources of Energy

Primary energy sources are naturally occurring and do not require any alteration or processes to convert them into a usable source of energy. These include radioactive elements, fossil fuels, sunlight, wind, and water. Secondary sources of energy are derived from primary energy sources and have to be processed before being used or for convenience. Examples of secondary sources include electricity and biofuels.

Renewable and Nonrenewable Energy Sources

Renewable sources of energy, also known as green energy, are replenished naturally and include solar, wind, geothermal, biomass, and hydropower. Nonrenewable sources of energy, on the other hand, refer to energy sources that are finite and cannot be replenished naturally. Examples of nonrenewable energy sources are fossil fuels such as coal, oil, and natural gas.

Fossil Fuels are the Main Source of Energy Globally

Fossil fuels currently remain the major sources of energy globally, with petroleum, coal and natural gas contributing to more than 70% of the energy production. The burning of fossil fuels, specifically coal, has led to an increase in atmospheric carbon dioxide and global warming. To minimize this environmental impact, more emphasis is being put on the usage of renewable energy sources and ways to reduce fossil fuel consumption.

Renewable sources of energy such as solar, wind, and hydropower, are becoming increasingly popular due to their sustainability and positive environmental impacts. Renewable sources are not only becoming popular, but they are also getting cheaper with advancements in technology.

However, renewable sources are not yet cost effective to use as the primary source of energy in many parts of the world. With that said, some countries are shifting away from fossil fuels. For example, China is ramping up its use of renewables, while the United States is focusing on reducing its reliance on coal as a source of electricity.

Nuclear Power is a Growing Source of Energy

Nuclear power is another source of energy that is becoming increasingly popular. Nuclear power plants generate electricity through the process of nuclear fission, which is the splitting of atoms. Nuclear power is a reliable, low-carbon emission alternative to fossil fuels and has the potential to be a major contributor to global electricity production as countries move away from fossil fuels.


While there are different sources of energy available today, fossil fuels are still the main source of energy globally. However, countries around the world are focusing on transitioning away from fossil fuels and towards renewable sources, as well as nuclear power, in order to reduce their negative environmental impacts. The use of renewable sources is expected to grow significantly in the coming years as the technologies become cheaper and more accessible.

Nancy Crawford Smith

Nancy is a registered nurse who has trained in various energy therapies, including Reiki and Maya Abdominal Therapy. She uses a combination of body work, energy therapies, and spiritual healing to assist individuals in a holistic healing journey.

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