Alternative Energy Sources – Overview

Human civilization has started realizing how much harm they have already caused to the environment; and when it comes to taking a stand against these environmental problems, the focus shifts to the use of Renewable Energy. Have you ever wondered what Alternative Energy Sources are? and why are they supposed to help us sustain? Alternative sources of energy are the ones which do not cause any undesirable consequences to the environment, are renewable and are free!

Alternative energy sources can be implemented for houses, for cars, factories and any other facility you can imagine. Scientists around the world are researching on developing and discovering new Alternative Energy Sources so that the growing energy needs of the human population can be met more easily, safely and efficiently. Here is a list of Alternative Energy Sources which will help us maintain the balance of nature without causing it much harm as compared to the conventional energy sources.

Alternative Energy Sources

Commonly known alternative energy sources

  Hydroelectric Energy

The potential energy stored in the water held in dams is made to drive a water turbine and generator. Which in turn produces electric power. This form of energy generation is called hydroelectric power. Out of all the alternative energy sources, this one has been most commonly adopted in the current time.

Advantages of hydroelectric power generation

– The source of hydroelectric power generation i.e., water is free of cost.
– Dams can provide virtually continuous electricity generation.
– The water used for power generation can be put to use again.
– There is no chemical process involved in the power production process, therefore, the power generated is clean and does not harm the environment.

 Solar Energy

This is the energy which the earth receives from the Sun. This is one of the most promising alternative energy sources, which will be available to mankind for centuries to come. The only challenge remains to tap solar energy in the most efficient way. The solar power generation is done by using a series of photovoltaic cells where the solar rays are converted into electricity. Apart from electricity production solar energy is also being used for heating water, cooking food, etc.

Advantages of solar energy

– The source of energy is absolutely ‘free’.
– Solar power which is generated in the day time can be stored to be made available in the night time as well.
– Solar power generators can be used to generate power in rural and remote areas where there is no reach of the conventional form of energy.
– The generation of solar power is quite and absolutely clean.
– Solar energy is a renewable form of energy will not deplete until thousands of years.

 Wind Energy

The power of the wind is harnessed to propel the blades of wind turbine attached to an electric generator to generate wind energy. Wind energy is an effective alternative source of energy in areas where the velocity of wind flow is high.

 Advantages of wind energy

– Wind energy is a clean form of energy.
– The source of power generation i.e., the wind is free of cost.
– Wind energy is a renewable source of energy.

Biomass Energy

This is the energy developed from the wastes of various human and animal activities like the by-products and wastes from the timber industry, agricultural yields, municipal solid waste, etc. Out of the many alternative sources of energy, this is the one which takes into account the utilization of waste material to develop energy thereby disposing of them in a profitable and effective way.

 Advantages of biomass energy

– It is an environmentally friendly way of energy production in which biological mass is recycled and re-used.
– The biomass will keep generating and decomposing as part of the natural biological cycle. Therefore, biomass energy is considered a renewable source of energy.

New alternative energy sources

To answer the question of which Alternative Energy Source has been brought to picture newly, you should understand that as you are reading this, there are developments being carried on to find more and more alternative energy sources. Apart from the commonly known alternative energy sources, there have been recent advancements in terms of discovering new alternative energy sources to add to the list of alternative energy sources.

 Geothermal Energy

This is the energy tapped from the heat inside the earth. Hot rocks residing in the core of earth heat water which emits the surface of the earth with pressure and as steam. This pressurized steam can be used to run steam turbines to generate electricity.

Advantages of geothermal energy

– Similar to other alternative energy sources, the geothermal energy source is free of cost.
– With a proper power generation system in place, no harmful by-products are produced.

 Tidal Power

The surface of the earth is 71.11% covered by water bodies especially oceans. The tides in water rise and fall due to the gravity of the sun and moon. Since we know about how the position of moon changes we can predict the rise and fall of tides. This rise and fall of tides can be utilized by setting up small dams and passing water through the turbines to generate power.

Advantages of tidal energy

– The source of power generation is free and renewable.
– The power generated is clean and does not cause any pollution.

Challenges with using alternative energy sources

As promising as the use of alternative sources of energy may sound, it is still under research as to how to tap energy from these resources in the most efficient and effective way. Although small power generation systems can be put in place, power production from these resources on a large scale is still a challenge with hydroelectric power generation being an exception.

Many countries are not yet ready to move from using conventional energy sources to the alternative energy sources as it involves a huge amount to decommission the old power generation infrastructure and establish new infrastructure. Therefore, the shift is ideal to be made in phases.

Why use alternative energy sources?

Alternative energy sources are available free of cost and do not tax the environment for their usage. Power generation through alternative sources of energy is clean and ‘green’. If we shift to use power generated from these sources, then carbon dioxide emission from the conventional energy sources will be greatly reduced, and the problem of global warming will be solved in a few years. Also, the fast depleting traditional energy sources can be preserved. Along with air pollution, the use of traditional energy resources also causes soil pollution and water pollution by releasing various toxins to the land and water. This can also be controlled reasonably.

The damage that we have caused to earth after the industrial revolution is huge and we will have to take action immediately if we want to keep the planet sustainable for our future generations. The biggest leap that mankind can take to prevent further damage is to start using alternative energy sources.

Read more: Latest trends in renewable energy-2019


  1. “Alternative energy sources are available free of cost”. I guess you mean you won’t have to pay for electricity bills, nevertheless, they are not free of cost due to one time payment, maintenance, etc..

    1. Author

      They are free of cost means, they are renewable as the governments won’t have to pay for resources such as oil, coal.

      1. Nothing is “free of cost” as there is always a cost for something that is produced. It may be free to the consumer, or free to those who are allowed to use it, but it is not “free of cost” as you still need to pay for construction and maintenance, as SEO Training said. Something can be free to somebody as the consumers, but not to the government. Not having to pay for resources does not make it free, it simply reduces the price of producing energy.


        2. Free Cost means Government Will get free but Cost you pay for Electricity bill is For The Facility you used. In home you get Electricity Without any problem. YOU Only Pay Money which you used as Facility Like Wire, Electrical Pole etc.

      2. We are using these energy but still the environment is polluting

        1. Author

          In fact, these energies are not to blame for polluting the environment. They, at least, helped in reducing the pollution. It could’ve been worse.
          People should be ware of how serious it is to ignore the effects of the sources of pollution.

    2. Yes. You are right! We have to save our world by using renewable alternative resources. I do my best to save our beautiful world.

  2. WHY IS THE alternative energy sources SO IMPORTANT ALL WE HAVE TO DO IS GO GREEN

    1. I totally agree with you Alex, People are thinking only to produce various way of producing energy, in order to do that we destroying valuable things for life that are trees. we must stop cutting trees and start planting trees.

    2. By using alternative energy sources you are “going green” by not polluting the Earth using fossil fuels or other finite energy sources

  3. Thank you, I’ve recently been searching for information about this topic for ages and
    yours is the best I have found out till now. However, what about the bottom line?
    Are you sure concerning the supply?

  4. All of the mentioned sources are the main concern of sustainability development with regards to energy consumption which have considerable negative impacts on global warming and other environmental indices.
    The main challenge which is considered at the same time as an opportunity is how to optimize these energy sources production to be more efficient and effective.

  5. I see in the list above that biomass is considered today an alternative energy source (alternative to fossil fuels) that can be used to produce electricity at the same way like using coal.
    The problem is that the wood is obtained from the forest and we need the forest to consume the carbon emissions produced by cars and the energy sector.

  6. With the increase in competition and product supply within these
    industries, as well as tax incentives and possible government subsidies because of these clean energy resources, cleaner smarter energy will be in reach of countless quickly the next several years.

    We are currently considering some areas for average investors and
    funding your company too benefit from some
    BIG lucrative opportunities in the future because these areas grow and develop within the coming years.
    This makes the creation of alternative fuels a predictable necessity in the foreseeable future.

  7. does anyone know which one is the best one to reduce greenhouse gasses and global warming?

    thank you

    1. Author

      There are several ways to reduce greenhouse gasses and global warming such as recycling, using energy-efficient products, Smart home technology, etc..
      However, the best one depends on your budget and how are you willing to conserve energy.

  8. I like the topic addressed website and will definitely follow your articles since i find them to be very informative. Very commendable work.

  9. Dan, you talk sensible on the issue of biomass, if you have more idea on it please let it available. Thanks

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