Potential in Pakistan
Muhammad Uzair Khan (2010-MC-07)
Hassan Javaid (2010-MC-20)
Syed Muhammad Talha Zaidi (2010-MC-54)
What is Hydroelectric power?
Renewable source of energy
It is renewable because the process takes nothing away from the environment .
Advantages
1. Flexibility
2. Low power costs
The major advantage of hydroelectricity is elimination of the cost of fuel.
No import of fossil fuel is required.
The average cost of electricity is less.
Long economic lives.
Low cost of labor.
3. Suitability for industrial applications While many hydroelectric projects supply public electricity networks, some are created to serve specific industrial enterprises. 4. Reduced CO2 emissions
5. Other uses of the reservoir
Reservoirs created by hydroelectric schemes often provide facilities for water sports.
Become tourist attractions themselves.
In some countries, aquaculture in reservoirs is common.
Multi-use dams installed for irrigation support agriculture with a relatively constant water supply.
Large hydro dams can control floods.
Disadvantages
1. Ecosystem damage and loss of land
Large reservoirs required for the operation of hydroelectric power stations may result in submersion of extensive areas.
Habitat fragmentation .
2. Siltation and flow shortage
When water flows it has the ability to transport particles heavier than itself downstream, thus giving rise to siltation.
Siltation reduce sits capacity to control floods.
Eventually, causing floods.
3. Methane emissions (from reservoirs)
Lower positive impacts are found in the tropical regions, as it has been noted that the reservoirs of power plants in tropical regions may produce substantial amounts of methane. 4. Relocation
Another disadvantage of hydroelectric dams is the need to relocate the people living where the reservoirs are planned.
Historically and