Importance of Renewable Energy

Given that carbon dioxide is the primary component of greenhouse gases (GHGs), there is widespread concern about lowering carbon emissions. In this context, several policies, such as increasing renewable energy deployment and fostering technical innovation, might be implemented to minimize carbon emissions. Governments also utilize supporting mechanisms such as feed-in tariffs, renewable portfolio requirements, and tax policies to encourage renewable energy generation while also adopting energy usage efficiency to save energy. Many countries have begun to build power-producing facilities that employ renewable energy sources. The significance of alternative energy sources is linked to climate change issues caused by the overuse of fossil fuels.

Energy security, economic consequences, and carbon dioxide emission reduction are the three key motivators driving the expansion of renewable energy technology. The word “alternative energy” refers to any kind of energy other than conventional energy sources, such as hydropower. Renewable energy sources have received a lot of attention in recent years.

Renewable Energy

The supply of renewable energy is steadily expanding. A significant amount of investment has been invested and technological advancements have enabled countries to create renewable energy at a lower cost. The number of nations producing more than 100 megawatts of renewable energy is expected to grow dramatically. Because traditional energy production has certain harmful and permanent externalities. It is vital to encourage and develop renewable energy supply methods. These technologies may not cost competitive with traditional fuels in terms of production. But they may be when externalities such as environmental and social impacts are included.

Hydro Power

Hydropower is now the world’s greatest renewable energy source for power generation. Hydroelectric power output has increased significantly. Hydropower development is now problematic due to high initial fixed investment costs and environmental considerations.

The majority of the country’s hydroelectric plants were developed decades ago in lakes, streams, and rivers. They frequently constructed enormous dams to stop the flow of water, producing a pool of water above the building. One or more pipelines allow the pooled water to flow downward. As the water flows through the pipes, it spins a turbine, which drives a generator, which delivers clean power to your home.

Most newly built hydroelectric projects nowadays are much smaller and employ innovative approaches to better conserve the wildlife and plants that rely on naturally flowing streams. To eat and mate, fish, for example, must travel upstream.

We create fish ladders to assist them to navigate around our dams so they can climb over the top and swim. Alternatively, we do not obstruct their passage at all; some new hydroelectric projects redirect a portion of a river or stream into a distinct channel. So the river and its environment may continue unaffected while we create power off to the side.

Some hydroelectric plants not only create power but also store it in the world’s biggest “batteries.” Pumped storage hydropower, often known as water batteries, can store enormous quantities of renewable energy for months at a time. This storage is critical.

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Wind Power

Wind energy is energy derived from the wind’s force. A wind turbine converts the kinetic energy of air currents into electrical energy. The rotor, which converts kinetic energy into mechanical energy, and the generator, which converts mechanical energy into electrical energy, are the major sources of energy extraction. We’re talking about renewable, efficient, mature, and secure energy, which is critical to the energy transition and economic reducing emissions.

A wind turbine is required to harness the kinetic energy of the wind and transform it into electrical energy. The best usage of these titans is determined by the intensity of the wind. As a result, wind farms, which pool a large number of wind turbines and allow for huge amounts of electricity to be obtained, must be built in areas where windy conditions prevail.

Wind turbines must be orientated in the direction of the wind, which is accomplished using a vane on the nacelle. The power of the air currents will then propel the wind turbine’s three major components:

  • The rotor is made up of three blades and a bushing that connects them, its job is to catch wind energy and transform it into mechanical rotational energy.
  • The multiplier is a shaft-connected device that increases the rotational speed of the engine.
  • The generator is in charge of transforming mechanical energy from spinning into electrical energy.

Each wind turbine in a wind farm is connected by subterranean wires that transport power to a transformer substation. It is then transferred to homes, enterprises, and schools, among other destinations, via the distribution networks of the numerous power providers.

Solar Power

Solar power is simply useable solar energy in the form of electric or thermal energy. It may be gathered in a variety of methods. the most popular being a photovoltaic solar panel system, or PV system, which turns the sun’s rays into useful power. Aside from generating electricity using photovoltaics, solar energy is often employed in thermal applications to heat interior rooms or fluids. To completely utilize the sun’s energy, residential and commercial property owners can install solar hot water systems and design their structures with passive solar heating in mind.

Solar energy is a clean, affordable, renewable energy source that can be harnessed practically anywhere on the planet. Each place where sunlight strikes the earth’s surface is a possible location for solar power generation. And, because solar energy is derived from the sun, it is an infinite supply of electricity. Renewable energy methods create power from unlimited resources. Compare producing power with renewable resources versus producing electricity with fossil fuels. Because oil, gas, and coal took hundreds of thousands of years to develop, every time one of those finite resources is used to generate energy. That finite resource is brought a little closer to exhaustion. There will always be steady sunshine shining on Earth’s surface. After converting sunlight to energy. there will be a limitless supply of sunlight to convert in the future. That is why solar power is, by definition, renewable energy.

Geothermal energy

Geothermal energy is heat derived from the earth’s subsurface. It is found in the rocks and fluids beneath the earth’s crust, all the way down to the boiling molten rock, magma.

Wells are excavated a mile down into subterranean reservoirs to obtain steam and hot water. Which may then be utilized to operate turbines attached to electricity generators. Geothermal power facilities are classified into three types: dry steam, flash, and binary.

Dry steam is the oldest kind of geothermal technology, extracting steam from the ground and directly driving a turbine. Flash plants convert high-pressure hot water to cool, low-pressure water. Whereas binary plants convert hot water to vapor by passing it through a second liquid having a lower boiling point.

Final Thoughts

Renewable energy technologies have the potential to minimize carbon dioxide emissions by replacing fossil fuels in the power generating and transportation sectors. Because traditional energy production has negative and permanent effects, it is vital to develop and promote renewable energy supply methods. Power generation from renewable energy sources should be enhanced in order to lower energy unit costs and make them a competitive alternative to traditional energy sources. To minimize CO2 emissions and address the issue of climate change, Two major solutions may be implemented: replacing fossil fuels with renewable energy sources as much as feasible and improving energy efficiency regardless of type. Because of their important contribution to renewable energy generation, we evaluated hydro, wind, solar, and geothermal sources in this research.


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