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India's Prime Minister Electric Vehicle Scheme (EV Schemes)

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The PM EV Scheme refers to the Prime Minister Electric Vehicle Scheme , which is part of the Indian government’s broader initiatives to promote electric vehicles (EVs) and transition towards sustainable mobility solutions. This scheme is not officially termed as "PM EV Scheme" but often refers to several government initiatives like the FAME (Faster Adoption and Manufacturing of Electric Vehicles) India Scheme and other policies designed to promote electric mobility in India. Here’s an overview of the major initiatives under this context: 1. FAME India Scheme (Faster Adoption and Manufacturing of Electric Vehicles) The FAME India Scheme is the main program under the Government of India to promote electric and hybrid vehicles in the country. It is implemented by the Ministry of Heavy Industries to support the market for EVs through financial incentives. The scheme aims to create demand for electric vehicles, focusing on both public and private transport. FAME I : Launched i
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What is Tidal Energy and Wave Energy ?

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 Tidal Energy and Wave Energy are two forms of renewable energy that utilize the natural movement of water to generate electricity. Here's a brief overview of each:

Tidal Energy

Tidal energy harnesses the power of the ocean tides, which are caused by the gravitational pull of the moon and the sun on Earth's oceans. It involves the movement of water during high and low tides, and there are two main methods to generate electricity using tides:

  1. Tidal Stream Generators: These are underwater turbines that work similarly to wind turbines, but they are placed in fast-flowing tidal currents. The movement of the water drives the turbine blades, which then generate electricity.

  2. Tidal Barrages: A barrage (like a dam) is built across a tidal estuary or inlet. During high tide, water flows into a basin, and when the tide recedes, the stored water is released through turbines, which generate electricity.

Advantages of Tidal Energy:

  • Predictability: Tides are highly predictable compared to other renewable sources.
  • High Efficiency: Tidal turbines can be very efficient due to the density of water, which is much higher than air.

Disadvantages:

  • Environmental Impact: Tidal barrages can have significant ecological impacts on local marine habitats.
  • High Initial Costs: The construction of barrages or underwater turbines can be expensive.

Wave Energy

Wave energy is derived from the movement of surface waves on the ocean. These waves are created by the wind blowing over the surface of the sea. Several technologies are used to capture wave energy:

  1. Point Absorbers: These are floating structures that move up and down with the waves. The vertical motion is used to drive a hydraulic pump or generator to produce electricity.

  2. Oscillating Water Columns (OWC): This technology involves an underwater chamber that captures incoming waves, causing air inside the chamber to rise and fall. The air movement drives a turbine that generates power.

  3. Attenuators: These are long, jointed structures that float on the surface, parallel to wave direction. They bend and flex with the waves, and this motion is used to generate electricity.

Advantages of Wave Energy:

  • Abundant Resource: Oceans cover a significant portion of the Earth's surface, providing vast potential for wave energy.
  • Low Carbon Footprint: Wave energy has minimal emissions compared to fossil fuels.

Disadvantages:

  • Site Specific: Not all coastal areas have consistent or high enough wave energy to make wave power feasible.
  • Maintenance Challenges: The ocean environment is harsh, with constant exposure to saltwater and storms, which can make maintenance challenging.

Comparison: Tidal vs Wave Energy

  • Energy Source: Tidal energy depends on tidal cycles, whereas wave energy depends on wind-generated surface waves.
  • Predictability: Tidal energy is highly predictable since tides are governed by astronomical factors. Wave energy is less predictable since it depends on wind patterns.
  • Technology: Tidal power systems generally require significant infrastructure like barrages, while wave energy uses floating or submerged devices.

Both tidal and wave energy have great potential to contribute to renewable energy generation, particularly for coastal areas, but their development is often limited by high costs and environmental challenges.

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