Which is most suitable for electricity generation. 1 Hydro power plant 2 Thermal power plant 3 Nuclear power plant 4 Wind power plant?

It depends on landscaple, if  it has river from mountains, it's better hydro power plant.

Thermal power plants most useful in northern countries because of generation power and heating. Nuclear power plant uses on most big megapolises. Wind power plants depends on landscapes also.

We required power, there is no issue! it comes from what ever sources!? but the source of mechanical energy is the question, it depends on Investment, availability, affordability, situation, Local rules and regulations etc.,

Here hydro energy & wind energy is almost used to generate electricity only.

"Most suitable" is not helping to determine what's the target.

Wind is currently the cheapest in terms of cost per kWh generated, but you need at least7-8m/s wind speed average and low turbulences to make it cost-effective without incentives.

It is highly intermittent in the short period (from% nominal power one day to0% nominal power the next day) but highly predictable in the-years scale period (+/-5%).

Capex around $1.5m /MWp for on-shore farms and $2.5-3m /MWp for off-shore farms, but no cost for input and around$/MWh O&M costs (on-shore) and$/MWh off-shore. Capacity factor around-% for good on shore wind farms and >-% for good off shore wind farms. (Capacity Factor = annual production / theoretical annual production at full nominal power x8, hours)

Hydro less intermittent in the short term (flow of the river), or even perfectly predictable in the case of hydro from dams and basins. But highly impacting the environment, with entire valleys flooded for the construction of reservoirs.

Cost per MWh can be even lower than wind, but hard to assess the environmental costs related to construction of infrastructure.

Construction of water reservoirs can contribute to regulation of river floods, but it is also harming animal species and i some cases the quality of life of entire human populations surviving of fishery.

Thermo: low capex, high Opex, totally depending by cost of fuel (oil/gas/coal/etc). Highly polluting the environment both with CO2, methane emissions, particulate. It's one of the major sources of the "carbonification of atmosphere), the process with which humans transfer carbon from underground to atmosphere.

Nuclear: real cost of nuclear has been highly under evaluated, as the only cost taken into consideration was the fuel, capex and some Opex. But the cost of disposal of nuclear waste, of the dismissal of the plants at the end of their working life, the security services related to all the supply chain of both the nuclear fuel and technology has never been taken into real consideration. Moreover, the cost of air fighters protecting the "no-fly-zone" over the nuclear power plants (in France),/,7/7 and/, has always been paid by taxpayers, never by the owner of the nuclear plants selling the energy. Nuclear plants also need enormous quantities of water to work, and in case of droughts the plants can be shut down. Finally, also the capacity factor (i.e. the quantity of time the plant is working in one year) has always been overestimated: in UK, the average CF for nuclear plants has been in the past decades around%, due to enormous maintenance works needed.

NUCLEAR IS SUFFICIENTLY,BUT COSTLY,DANGER AND FORBIDDEN

HYDRO & THERMAL ARE AVAILABLE AND COMMON

WIND IS NOT UTILIZED

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Large power plants can be of only thermal, nuclear and hydro power types. The selection depends on many factors - Availability of the input, enevironmental conditions, quantum of power requirement etc.

Advantages of Thermal Power Plants

• Fuel used i.e coal is quite cheaper.
• Initial cost is less as compared to other generating stations.
• It requires less space as compared to hydro-electric power stations.

Disadvantages of Thermal Power Plants

• It pollutes atmosphere due to production of smoke & fumes.
• Running cost of the power plant is more than hydro electric plant.

• Advantages of Hydro Electric Power Station
  • It requires no fuel , water is used for generation of electrical energy.
  • It is neat and clean energy generation.
  • Construction is simple , less maintenance is required.
  • It helps in irrigation and flood control also.

  Disadvantages Hydro Electric Power Station

  • It involves high capital cost due to dam construction.
  • Availability of water depends upon weather conditions.
• It requires high transmission cost as the plant is located in hilly areas.

Nuclear power stations are usually considered to be base load stations, since fuel is a small part of the cost of production.[3] Their operations and maintenance (O&M) and fuel costs are, along with hydropower stations, at the low end of the spectrum and make them suitable as base-load power suppliers. The cost of spent fuel management, however, is somewhat uncertain