Electricity is generated by fast flowing water, which is a renewable resource. India has a number of multi-purpose projects like the Bhakra Nangal, Damodar Valley corporation, the Kopili Hydel Project etc. producing hydroelectric power.
Understanding Hydro energy in a simple way
Think about the power of flowing water—it’s strong and constant. Hydro energy is about using the energy from moving water to generate power.
How It Works:
- Water Flow: Imagine a river or a waterfall. The water in motion has a lot of energy.
- Dams or Turbines: Humans can build structures like dams or use turbines in the water to capture this energy.
- Generating Electricity: As the water flows, it spins turbines connected to generators. Just like wind turbines, this spinning motion is turned into electricity.
Classification of Hydro Projects based on Installed Capacity
Hydro power projects are generally categorized in two segments i.e. small and large hydro. In India, hydro projects up to 25 MW station capacities have been categorized as Small Hydro Power (SHP) projects.
- Micro: upto 100 KW
- Mini: 101KW to 2 MW
- Small: 2 MW to 25 MW
- Mega: Hydro projects with installed capacity >= 500 MW
- Thermal Projects with installed capacity >=1500 MW
While Ministry of Power, Government of India is responsible for large hydro projects, the mandate for the subject small hydro power (up to 25 MW) is given to Ministry of New and Renewable Energy.
Pros:
- Renewable: Water is always flowing, so hydro energy is considered a renewable source.
- Reliable: Unlike some other renewable sources, like solar or wind, water flow is consistent, providing a reliable source of energy.
- Clean Energy: Hydro power doesn’t produce pollution during electricity generation, making it environmentally friendly.
Cons:
- Environmental Impact: Building dams can change the environment, affecting ecosystems and sometimes displacing people.
- Location-Specific: Not every place has the right conditions for hydro energy. It depends on having flowing water at the right speed and volume.
- Initial Costs: Building dams and hydroelectric plants can be expensive.
