Tidal Wave Energy, Pros & Cons

Tidal wave energy is among the key sources of renewable energy available on our planet. 

Wave energy is as source of power that comes from the endless march of the waves as they roll into the shore then back out again.

Humans harness this power along the coastal regions of the US, Canada, Europe, and Australia. The best thing about wave energy is that it will never run out. 

There will always be waves crashing upon the shores of nations, near the populated coastal regions. The waves flow back from the shore, but they always return. They require no input from man to make their power, and they can always be counted on. The first modern commercial tidal power was installed off the coast of St. Malo (1965), in France. It has been producing 240 MW with every tide using a tidal barrage. The other solutions generating electricity from tides are:

• Tidal barrages are among the oldest methods of tidal power generation, with projects being developed as early as the 1960s, such as the 1.7 megawatt Kislaya Guba Tidal Power Station in Kislaya Guba, Russia.
• Tidal turbines like this Open-Centre Turbine: a horizontal axis device, which is placed directly on the seabed using a gravity base
  and this Tocardo turbine from Holland
  and this Deep Ocean Energy Turbine in Florida
  a small company in Israel developed even a mini model turbo
• Aquamarine Power’s Oyster wave power technology: a buoyant, hinged flap which is attached to the seabed at depths of between 10 and 15 meters, around half a kilometer from the shore
• The Pelamis machine floats semi-submerged on the surface of the water. As waves pass down the length of the machine and the sections bend in the water, the movement is converted into electricity 
• The DEXAWAVE wave energy converter consists two rigid pontoons, hinged together. The one pontoon can pivot relative to the other. There is a hydraulic power take-off system on top of the converter, generating up to 250 kW
• The Vigor Wave Energy Converter is based on a floating hose, using water and air as mechanical parts to absorb the wave energy. The principle has the potential to produce large amounts of electricity at low cost and the Vigor Wave Energy Converter will be one of the power plant solutions supplying renewable and cost efficient energy to a future sustainable society.
• Wave Carpet: can extract the energy of the ocean waves By the Berkeley Team

Pros

• Renewable, emission-free and reliable. A plant can last 100 years
• High efficiency, predictable output
• Could potentially provide a storm surge barrier.
• Environmental impacts are local, not global

Cons

• Very location specific and expensive to build
• Barrages may restrict access to open water
• Impact on fish, marine mammals and birds
• Might decrease salinity in tidal basins

More renewables, pros & cons

• Tidal Wave Energy, Pros & Cons
• Gas from Algae, Pros & Cons
• Biomass Power, Pros & Cons
• Hydrogen Power, Pros & Cons
• Shale Gas, Pros & Cons
• Solar Power Pros & Cons
• Energy from Tar Sands Oil, Pros & Cons
• Fusion Power, Pros & Cons
• Wind Energy Pros & Cons
• Geothermal Energy, Pros & Cons
• Concentrated Solar Power, Pros & Cons

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