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Power Minister Shri RK Singh approves proposal to declare ocean energy as Renewable Energy (Relevant for GS Prelims & Mains Paper III; Science & Technology)

In a decision that would give boost to the ocean energy in India, Union Minister of State for Power and New & Renewable Energy (IC) and Skill Development & Entrepreneurship, Shri RK Singh approved a proposal to declare ocean energy as Renewable Energy today.

Accordingly, the Ministry of New and Renewable Energy has clarified to all the stakeholders that energy produced using various forms of ocean energy such as tidal, wave, ocean thermal energy conversion etc. shall be considered as Renewable Energy and shall be eligible for meeting the non-solar Renewable Purchase Obligations (RPO).

Background: Ocean Energy

  1. Introduction to Ocean Energy
    Oceans cover 70 percent of the earth’s surface and represent an enormous amount of energy in the form of wave, tidal, marine current and thermal gradient. A variety of different technologies are currently under development throughout the world to harness this energy in all its forms.
  1. Potential
  • Total identified potential of Tidal Energy is about 12455 MW, with potential locations identified at Khambat & Kutch regions, and large backwaters, where barrage technology could be used.
  1. Technology
    Although currently under-utilised, Ocean energy is mostly exploited by just a few technologies: Wave, Tidal, Current Energy and Ocean Thermal Energy.
  1. a) Tidal Energy
    The tidal cycle occurs every 12 hours due to the gravitational force of the moon. The difference in water height from low tide and high tide is potential energy. 
  1. b) Wave Energy
    Wave energy is generated by the movement of a device either floating on the surface of the ocean or moored to the ocean floor. Many different techniques for converting wave energy to electric power have been studied.
  1. c) Current Energy
    Marine current is ocean water moving in one direction. This ocean current is known as the Gulf Stream. Tides also create currents that flow in two directions. Kinetic energy can be captured from the Gulf Stream and other tidal currents with submerged turbines that are very similar in appearance to miniature wind turbines. Similar to wind turbines, the movement of the marine current moves the rotor blades to generate electric power.
  1. d) Ocean Thermal Energy Conversion (OTEC)
    Ocean thermal energy conversion, or OTEC, uses ocean temperature differences from the surface to depths lower than 1,000 meters, to extract energy. A temperature difference of only 20°C can yield usable energy.
  1. Technology Objectives
    The objective of the technology programme is to accelerate and enhance support for the resource assessment and deployment of ocean energy in the country and to harness it for power generation and to overcome the barriers. 

 All the stakeholders desirous of utilizing Ocean Energy are invited by MNRE for demonstration projects of proven technologies under Research, Design,       Development and Demonstration (RDD&D) programme/policy of the Ministry, in force at the time.

(Source:https://pib.gov.in/PressReleseDetail.aspx?PRID=1582638&RegID=3&LID=1)



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