cost of operation of which plant is least?

Answer Posted / neha

hydro power plant has less operating cost because the water sources are available freely, The major advantage of hydro power is elimination of the cost of fuel.
Hydroelectric plants also tend to have longer economic lives than fuel-fired generation, with some plants now in service which were built 50 to 100 years ago.Operating labor cost is also usually low, as plants are automated and have few personnel on site during normal operation.

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