Disadvantages of Hydroelectric power plant:

• Initial cost of the hydroelectric power plant is high and comparatively the returns are in low rates.
• The annual report importance of this capital cost is a large part of the annual cost of hydropower installations.
• The development period of hydro projects is moderately large.
• The gap between the groundwork and achievement of a project may spread from 10 years to 15 years.
• Power generation is reliant on the capacity of water available, which may vary from year to year and season to season.
• If the rainfall is in-time and satisfactory, only then the reasonable operation from the plant can be anticipated.
• Such plants are often far away from the load center and require long transmission lines to deliver power.
• The charges of transmission lines and losses in them are more.
• Large hydroelectric plants disturb the bio network of the zone, along deforestation, extinguishing plants and relocating people.
• Production of such plants is a limiting factor.
• The stress is now extra on mini, small and micro hydroelectric power stations