Green Energy: Its importance, Types and Uses

Green energy

What is Green Energy?

Green energy is any energy produced from natural resources, like sunlight, wind and water, and it usually comes from renewable energy sources.

The key to these energy resources is that they usually don’t harm the environment through factors such as releasing greenhouse gasses into the earth’s atmosphere.

How Does it Work?

Many renewable energy sources can produce green energy, such as solar, wind, geothermal, biomass, and hydroelectric power. Each of these technologies works differently, whether by taking control from the sun, as with solar panels, or using wind turbines or water flow to generate energy.

What Does it Mean?

The definition of green energy is that it cannot emit pollution, such as fossil fuels do, which means that not all renewable energy sources are green. Using organic material from sustainable forests for power generation may be renewable, but the CO2 produced by the burning process makes it not necessarily green. 

It can take millions of years for fossil fuel sources, like coal or natural gas, to replenish themselves. Green sources are usually obtained without any mining or drilling operations which may damage the ecosystems.

Types of Green Energy

The primary types are wind energy, solar power and hydroelectric power. It may include tidal energy, which uses ocean energy from the tides in the ocean. Solar and wind power can be produced on a small scale in people’s homes or on a larger scale in industries.

Image showing types of green energy

The common types of energies are as follows:

Solar Power

Renewable energy, such as solar power, is usually generated using photovoltaic cells, which convert sunlight into electricity. Solar power is also used for heating buildings, cooking, and lighting. Solar energy has now become cheap enough to be applied for domestic uses. It includes garden lighting, although it is also used on a larger scale for entire power neighbor hoods.


Rather than burning stubble, these organic materials can transformed into fuels such as ethanol and biodiesel, thus protecting our mother planet. Having supplied just 2.7% of the world’s energy for transport in 2010, biofuels expects to meet over 25% of global transportation fuel demand by the year 2050.

Wind Power

Wind energy generates electricity by using air circulation around the world to push turbines that generate electricity offshore and at higher altitudes.


It is also known as hydroelectric power since it generates electricity using water flow in rivers, streams, dams, or elsewhere. A small-scale hydropower system can even be created using water that flows through pipes in the home, evaporation or rainfall.

Geothermal Energy

This green power uses thermal energy which is obtained from under the earth’s crust. However this resource requires drilling thereby calling the environmental impact into question, it is a considerable resource once tapped into. Thousands of years ago, hot springs were heated by geothermal energy, and today, this same resource is used to generate electricity using steam. The energy stored in the United States alone is enough to produce ten times as much electricity as coal currently can. Iceland, for example, has easy-to-access geothermal resources, but the help relies on its location to be helpful. To be fully ‘green,’ the drilling procedures must be closely monitored.


The renewable resource must also carefully managed to be accurately labelled as a ‘green energy’ source. Biomass power plants generate energy from wood waste, sawdust, and agricultural waste that can burned. While burning these materials releases a greenhouse gas, emissions are still lower than those from petroleum-based fuels.

Why is it so Important?

Green energy is essential for the environment as it replaces the adverse effects of fossil fuels with more environmentally-friendly alternatives. Since it is derived from natural resources, green energy is also often renewable and clean. It means that they emit no greenhouse gases and are usually readily available.

A green energy source releases lesser greenhouse gases than fossil fuels over the course of its life cycle, as well as fewer or low levels of air pollutants. This is not only supporting our planet earth but also better for the health of living organisms that have to breathe the air.

Using green energy can also help stabilize energy prices as these sources are often locally produced and are not affected by geopolitical crises, price spikes, or supply chain disruptions. Economic benefits include creating jobs in building facilities that serve the communities where the workers are employed. Renewable energy created more than million jobs in last few years worldwide.

Due to the energy production through solar and wind power sources, the energy infrastructure is more flexible, less dependent on centralized sources that can lead to disruption, and less resilient to weather-related climate change.

Green energy also represents a low-cost solution for the global energy requirements of many parts of the world. With costs continuing to drop, green energy will become more accessible, especially to developing nations.


Some examples of green energy are in use today, from energy production to thermal heating for buildings, roads and transport. Many industries are now investigating green solutions, and here are a few examples:

Heating and Cooling in Buildings

Green energy solutions used for buildings ranges from large office blocks to people’s homes. These include solar water heaters, biomass-fuelled boilers, direct heat from geothermal, and cooling systems powered by renewable sources.

Industrial Activities

Renewable heat for industrial activities can run using biomass or renewable electricity. Hydrogen is now a significant renewable energy provider for constructing materials like cement, iron, steel and chemical industries.


Sustainable biofuels and renewable electricity are growing globally in use for transportation across various industry sectors. Automotive is an obvious example as electrification rises to replace te use of fossil fuels, but aerospace and construction are other areas actively investigating electrification.

Can It Replace Fossil Fuels?

Green energy may replace fossil fuels in the coming future. However, it may require diverse production from different means to achieve this objective. Geothermal is usually effective in places where this resource is easy to tap. At the same time, wind energy or solar power is a better way on the basis of geographic locations.

As green energy sources combines to meet global needs. So there is progress in producing and developing these resources, and therefore there is a chance of fossil fuels to phase out eventually.

Despite the fact that we are still some years away from this happening, it is necessary to lower climate change, improve the environment, and move toward a more sustainable future.

Economical Viability

The economic viability of green energy depends on a comparison with fossil fuels. As readily-accessible fossil fuels are undergoing depletion, the cost of this type of energy will only escalate.

Additionally, greener energy sources are becoming cheaper as fossil fuels become more expensive. Other factors favour green energy, like the ability to produce relatively inexpensive localized energy solutions like solar farms. The interest, investment and development of green energy solutions are bringing costs down as we continue to build up our knowledge and can build on past breakthroughs.

As a result, green energy can become not only economically viable but also the preferred option.

Which Type Is The Most Efficient?

Efficiency in green energy is dependent on location. If you have frequent and intense sunlight, it is easy to create a fast and efficient solution for power.

However, to truly compare different energy types, it is necessary to analyze the entire life cycle of an energy source. This process includes an assessment of the energy requires to create green energy resources. Analyzing how much energy can be convert into electricity, and any necessary environmental clearing. Of course, ecological damage would prevent a source from genuinely being ‘green,’ but when all of these factorscombines, it creates a ‘Levelised Energy Cost‘ (LEC).

The most efficient source of green energy is wind farms, which require less refinement and processing than solar panels. Advances in composites technology and testing have helped improve wind turbine lifespan and LEC. However, the same can implement with solar panels, which also see a great deal of development.

A significant advantage of green energy solutions is that they typically require little additional energy expenditure. After they constructed since they often use readily renewable energy sources. Among these are wind energy and solar energy. For coal, usable energy generates just 29% of its original value, whereas wind power generates 1164%.

Renewable energy sources are ranked as follows in efficiency (may vary as developments continue):

  • Wind Power
  • Geothermal
  • Hydropower
  • Nuclear
  • Solar Power

Green Energy Empowering Safer Planet

As a result of the natural resources used in green energy, such as sunshine, wind and water, there are tangible benefits for the environment. Energy sources like these are constantly replenishing, so they are the complete opposite of fossil fuels, which emit greenhouse gases and are unsustainable.

Creating energy that has a zero carbon footprint is a great stride to create an environmental future. If we are able to use it to meet our power, industrial or transportation needs, we will significantly reduce our environmental impact.

Green Energy, Clean Energy and Renewable Energy –Difference

Using these terms interchangeably, a resource can be all of these three together. It may also be renewable but not green or clean (such as with some forms of biomass energy).

Green energy is energy that comes from natural sources, such as the sun.

 Clean energy does not release pollutants into the air. Clean energy comes from renewable, zero-emission sources that do not pollute the atmosphere when used, and energy efficiency measures save energy.

Renewable energy comes from constantly replenishing sources, such as hydro power, wind power or solar energy.  Renewable energy is that energy that comes from sources or processes that are constantly replenished. These energy sources include solar, wind, geothermal, and hydroelectric power

Wind power is an example which comes under the three categories together. It is renewable, green and clean – since it comes from natural sources, self-replenishing and non-polluting sources.


Green energy is part of the world’s future, offering a cleaner and better alternative to many of today’s energy sources. Readily replenished, these energy sources are good for the environment and lead to a rise in employment and become more economically viable as the progress in development.

Since the fact that fossil fuels are a thing of the past, and so they do not provide a sustainable solution to our energy needs, by developing various green energy solutions, we can create a sustainable future for our energy provision without damaging the world we all live in.