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Know About the Most Important Green Energy Sources



Green energy is energy that, when produced, causes little or no harmful impact on the environment and does not release harmful greenhouse gases into the atmosphere that causes global warming. So, green energy is basically environment-friendly energy. The other name of green energy is renewable energy. This article is about the several green energy options available to human beings as alternatives to fossil fuels.

Why do we need to increase our dependence on green energy?

The benefits of green energy are many. When the whole world is facing the consequences of global warming, green energy is our only savior. Green energy reduces the dependence of human beings on fossil fuels like coal, oil, and gas. It offers a wide range of economic and social benefits. The best part about it is that it is renewable, that is, can be replenished naturally.

Sources of green energy

We get green energy from natural sources like sunlight, rain, plants, wind, tides, geothermal heat and algae. All of these energy sources are inexhaustible. Earlier, people knew about the existence of only three green energy sources, namely, solar power, hydropower and wind power. Research into non-polluting green energy alternatives is progressing at a fast pace. So, several other sources of green energy are emerging.

These are the six most common sources of green energy:

  • Wind power

It is possible to utilize the moving air on the surface of the earth for pushing turbines. Stronger winds are more powerful and therefore, produce more energy.

  • Solar power

Solar power is one of the green energy sources. People use photovoltaic cells to capture sunlight that is turned into electricity. We can also use solar energy for heating water, as a natural light and for cooking food.

  • Hydropower

The water cycle of the earth generates hydroelectric power. This water cycle includes rainfall, evaporation, tides and also the force of the water that runs through a dam.

  • Biomass

We can convert biomass like wood waste, combustible agricultural remnants, and sawdust into energy. The reason is that biomass contains energy stored in it. It gets its energy from the rays of the sun.

  • Geothermal

Just beneath the crust of the earth, thermal energy is present in massive amounts. This energy originates from the formation of the earth as well as minerals’ radioactive decay. Humans have been geothermal energy in the form of natural hot springs for bathing for centuries. Now, we have also started using it for generating electricity.

  • Biofuels

Instead of burning biomass to produce energy, we can also transform these organic materials into fuel. Two most common examples of biofuel are biodiesel and ethanol.

This was all about the most popular sources of green energy that are inexhaustible and environment-friendly. Dependence on these forms of renewable energy is a must in order to reduce the rate at which the earth is warming up. Moreover, fossil fuels, being a finite resource, require millions of years for development and we have already consumed 90 percent of it. So, green energy is the last ray of hope.


Fossil Fuels: Meaning, Types, Formation, And Importance



Image says how to collect flues under the ground
Image Credit : Pixabay (mohamed_hassan )

Fossil fuels can be defined as natural fuels (such as gas or coal), formed in the past from remains of various living organisms (animals and plants). In other words, fossil fuel is an organic substance, present under the ground in the form of deposits, created in an earlier geological period and used widely as a significant source of electricity and energy.

Fossil fuels can be found is almost any product that we humans use on a daily basis. They satisfy 90 percent of the world’s electricity demand.

Types of fossil fuels:

Four types of fossil fuels are present in the world. They are:

  • Petroleum
  • Natural Gas
  • Coal
  • Orimulsion

Formation of fossil fuels

The formation of fossil fuels takes place when organic matters buried deep under the earth’s surface receive continuous pressure and heat for millions of years. When it comes to natural gas and oil, the organic matters responsible for the creation of these fossil fuels have their source in the marine ecosystem. Coal, on the other hand, owes its formation to peat forests of ancient times.

Importance or uses of fossil fuels:-

The three main types of the above-mentioned fossil fuels exist in three varied states of matter. Oil is present in liquid form, coal is solid, and natural gas exists in the form of gas. Let us have a look at the ways in which we can use these fossil fuels.

  1. Uses of oil

The petroleum of crude oil is commonly known as black gold. The uses of oil are many and in various fields. It is required for the generation of electricity and also used by the transportation industry as fuel for jets and automobiles. Apart from that, oil has several byproducts that are used widely in the production of tars, plastics, waxes, lubricants, chemicals, and medicines also most of the fertilizers and pesticides available in the market either use oil or any of its byproducts.

  • Uses of natural gas

Natural gas is basically a gaseous fuel, the main ingredient of which is methane. One advantage of using natural gas is that it is comparatively cleaner than coal and oil. We use natural gas in cooking appliances such as fuel stoves, in air conditioning, in heat appliances required for heating homes, water, and buildings. Natural gas also provides electricity and produces paints, dyes, plastics, and fertilizers. Manufacturing companies and industries such as steel foundries, aluminum smelters, and glass foundries also rely on natural gas to a great extent. Apart from the uses mentioned above, natural gas also has its use in transportation as LNG or CNG.

  • Uses of coal

Coal is a fossil fuel that is present in the environment in a solid-state. It is made up of five key elements, namely, hydrogen, oxygen, nitrogen, carbon, and sulfur. There are three types of coal-based on their properties, namely, anthracite, bituminous, and lignite. As opposed to the other two, anthracite is hard and the carbon content is high, therefore, producing the highest energy.

An interesting fact about coal is that it can exist for more than 200 years. In ancient times, people used coal to smelt metal ores. There are several countries that cannot afford oil or natural gas as they are extremely expensive and thus, rely solely on coal for generating energy. Another usage of coal is the generation of electricity and as a component in electrical utilities.

Coal and its byproducts are also found in products such as aspirin, plastics, solvents, dyes, and soaps. The steel industry, cement manufacturing industry, pharmaceutical manufacturing industry, and the paper manufacturing industry also makes use of coal or its byproducts for manufacturing several essential products of daily use.

Eco-friendly alternatives to fossil fuels

This was just a brief description of fossil fuels and their uses in our life. The increasing use of coal and other fossil fuels in construction, industry, and transportation release carbon dioxide to the atmosphere. CO2 is a greenhouse gas that plays a key role in increasing the temperature of the planet. Fossil fuels also take millions of years to form. This is the reason why we need to reduce our dependence on fossil fuels and rely more on renewable energy sources such as geothermal, wind, tidal, solar, hydro-electric, and bio-fuels.

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Benefits of Solar Energy: Diverse Applications (Part 2)



With countless gadgets and technologies that can leverage solar power in the modern world, it is important to learn the benefits of solar energy and its diverse uses. My previous post about the diverse uses of solar energy offers an in-depth discussion of how this form of energy could be used at homes, holiday properties, and central power stations. Here are other applications of solar energy.

Solar water heating systems

In a home or business, hot water systems for kitchens, space heating, and bathrooms are nearly universal. What most people don’t know is that they can leverage solar power to get enough hot water in their homes and commercial buildings. Property owners can user thermal panels along with storage tanks to store the hot water. When needed, this water can circulate to a heater, shower or sink.

The modern ‘in floor’ heating systems and the traditional baseboard heating systems offer solar heat as the pre-heater to a traditional hot water tank or furnace. This will serve as the backup to your solar thermal system.

Industrial applications

One of the common benefits of solar energy is the diverse industrial applications associated with it. For decades, solar energy has been the primary power supply of choice for many industrial applications, especially where power is needed in a remote area. In these applications, solar energy is cost-effective. This is because many individual uses need just a few kilowatts of electric power.

Solar energy is also used on transportation signalings such as lighthouses, offshore navigation buoys, road traffic warning signals, and aircraft warning lights. It is also used to power environmental or situation monitoring tools and even corrosion protection systems for well-heads, bridges, pipelines, and more. For huge electrical loads, it is cost-effective to configure the hybrid power system and link to a PV with a sizeable diesel generator.

The benefits of solar energy here include the reliability and minimal maintenance needed. That makes this form of energy ideal in regions that are hard to get to.

Lighting, water pumping, and heating in the developing world

In addition to off-grid properties, remote buildings such as clinics, schools, and community halls can benefit from solar power. It can power telephones, different pieces of refrigeration equipment, TV, and more. WHO (World Health Organization) requires every clinic to have these devices. Rather than having a base solar power generator for each dwelling, it is possible to configure a central power plant. The plant power homes through a local wired network. It can also serve as a battery charging station where the member of the entire community can charge their batteries here.

Commercial buildings

On a commercial building, atria can be effectively covered with PV modules. These modules are semi-transparent to offer shaded light. In factories, the large roof areas offer a perfect location for solar modules. Besides, the vertical walls of commercial buildings can offer opportunities for PV incorporation.

Whether it is charging a wireless speaker or powering a renewable, the list of uses and benefits of solar energy is endless.


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Sources of Energy in Their Usage in Daily Life



Sources of Energy

Fossil fuels mainly consist of hydrogen and carbon bonds and are the important sources of energy since time immemorial. Man’s energy needs in every aspect are being served by fossil fuels only. These fuels are basically derived from the organic remains and decomposition of prehistoric animals and plants.

These organic remains are several million years old and are converted to carbon-containing fossil fuels by the extreme pressure and temperature of the Earth’s crust. These fuels produce a huge amount of heat and energy to meet man’s every need. Coal, petroleum, and natural gas are considered to be the three most important fossil fuels. Let us discuss the four main types of fossil fuels known so far:


Petroleum, also known as crude oil or condensate is one of the most widely used fossil fuels. The word petroleum is derived from the Latin words petro and ileum. Petro means rock and oleum mean oil. This fuel is highly valuable for mankind and almost every industry is dependent on this fuel. Hence it is also known as the “black gold”.

Petroleum is a liquid fuel that is made of hydrocarbons compounds inclusive of other liquid organic compounds. It is extensively used as fuel for automobiles, jets and to produce electricity. Its derivatives are also utilized in the plastic and medicine industries.

Petroleum products are derived from refined crude oil. Unprocessed crude oils that occur naturally are also referred to as petroleum products. Petroleum demand has been increasing year after year and which has immensely contributed to the water and air pollution worldwide. Because this is a stored reserve and due to high demand the oil field is depleting every year by around 2.5 percent.


Coal is a flammable organic and one of the rich sources of fossil fuel. It is usually brown or black in color. About one-quarter of the total world’s energy and 40 percent of the world’s electricity production is provided by coal. Several iron and steel industries in India and around the world are highly dependent upon coal.

Owing to its high use and demand coal reserves are also declining steeply and is on the verge of extinction within a few years from now. Hence we must find some alternative sources of energy that will serve the same purpose. Some of the alternative energy resources like solar energy, wind energy, and hydro energy are being used widely, but the user needs to be increased more.

Natural Gas

Natural gas is a colorless gas and is a mixture of several hydrocarbon gases like methane, ethane, propane, and butane. It is a combustible, convenient, and efficient source of energy. Methane (CH4) is the main component of natural gas. It has two parts: conventional gas- which can easily be extracted and unconventional gas- which requires more advanced technologies for extraction.

Natural gas also helps in the generation of electricity and is widely used for industrial, commercial, and residential purposes. Unlike any other fossil fuels, natural gas usually causes less pollution as this is comparatively cleaner. But like any other fossil fuel, this energy resource is also depleting rapidly.

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