About Blue Renewable Energy:
- It refers to energy harnessed from ocean-based resources, tapping into the vast potential of seas and oceans for clean, sustainable power.
- Key Blue Renewable Energy Resources:
Energy Resources | Source | Method | Potential Sites |
Tidal Energy | Gravitational forces from the moon and sun | Tidal barrages or underwater turbines | Gulf of Kutch, Sunderbans |
Wave Energy | Surface waves generated by wind | Oscillating Water Columns (OWCs), wave energy converters | Western coast of India, Lakshadweep, Andaman & Nicobar Islands |
Ocean Thermal Energy Conversion (OTEC) | Temperature difference between warm surface water and cold deep water | Warm water vaporizes a liquid to drive a turbine | Tropical regions, Indian Ocean |
Marine Currents | Ocean currents from wind patterns and earth’s rotation | Underwater turbines | Southern Indian Ocean |
Salinity Gradient Power | Salinity difference between seawater and freshwater at river mouths | Reverse electrodialysis or pressure retarded osmosis | River mouths, coastal regions |
About Indian National Centre for Ocean Information Services (INCOIS):
|
Why in News?
- Researchers at INCOIS, Hyderabad, have developed the Integrated Ocean Energy Atlas, mapping India’s coastline for potential blue renewable energy sources like tidal waves and currents.

