Advantages
- It requires cheaper foundations
- Easily intergrated with the electrical- grid network
- cheaper Installation and access during the construction phase.
- It can be operated and maintained easily and cheaply
Source:Onshore Vs Offshore Wind Turbines
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These are two types, namely Near shore and Off shore.
Advantages:
- The roughness of the water surface is very low Wind and obstacles to the wind are less.
so, large turbines can be installed
- Noise pollution is also not a factor because these are too far from shores
- Less affected to turbulance in wind and low wind shear
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Disadvantages
- Neagtive visual impact or noise.
- Limted avaliability of lands
- Restrictions asscociated with obstructions like buildings, mountains, etc.
- Noise pollution
- Afftected to more turbulance
Sources:Wind Power,Types of Wind Farms
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Disadvantages:
- Installing offshore windturbines is much more complex and costly
- Connection to the utility grid is also much more complex and expensive
- Operation and maintanances is also a complex task with off shore wind turbines
Source:Offshore Technology
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