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Energy green  clean ocean energy  the waveroller | Upload General

Green, Clean Ocean Energy: The WaveRoller

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by: Yvonne Doff
green  clean ocean energy  the waveroller | Upload

Green clean ocean energy like wave energy had many false starts. A Finnish company has been working on a 2MW prototype in Portugal. Can we finally use wave power to generate electricity?

Green Clean Energy: The WaveRoller

Wave energy is the energy that can be extracted from the rapidly changing water level at sea due to the presence of waves. Wave energy can be used to perform various tasks, including generating electricity, pumping water around, or desalinating water. The bigger the ocean, the higher the possibilities for speed and fetching energy - and given that Portugal has the entire Atlantic Ocean between the coastline and America, obtaining power is pretty good.

graph waves

What is wave energy and how does it work?
Wave power is produced by the up and down motion of floating devices placed on the surface of the ocean or or back and forth motion by devices under water. In other words, wind produces waves, and then waves and or current produce energy. As the waves and or current travels across the ocean, high-tech devices capture the natural movements of ocean currents and the flow of swells to generate power

The Power of Wave Energy

Chris Ridgewell, CEO of AW-Energy, the Finnish company behind the WaveRoller, explains that there are different types of wave technology. "There are floating objects, things on land that bring in the water and drain it away. Instead, the WaveRoller is attached and hinged to the seabed, only about 10 meters deep, using the back and forth motion of the wave. While a typical solar panel can capture about 150 watts per square meter on average," says Ridgewell. "With wave energy, it is about 40,000 watts per meter. That's a tremendous difference."

Recommended: Blue Energy: Marine Renewables Show Promise in the UK

The WaveRoller: Is This The First Time?

Ridgewell is not the first one that got excited by the idea for wave energy. From 1855 to 1973, there have been 340 patents requested for sea power in the UK alone. None of them worked, but a man from Royan, France, M. Bochaux-Praceique, bored a hole in a cliff, to use a turbine for supplying his house from energy.



                                                                         WaveRoller deployment
                                           Green Energy: The WaveRoller Sustainable Clean Ocean Power


Since then, engineers have come up with the idea repeatedly. In the first years of 2000, we saw the first real breakthrough. For example, the Islay LIMPET in Scotland was the first commercial wave power device. The device was connected to the UK National Grid and should have a 500kw unit but was downgraded to 250kw. Eventually, it was finally shut down in 2018. Thereupon, Portugal came with the Pelamis Energy Converters, to transform the movement of ocean waves into electricity, with a much more promising 2.25MW of total installed power. 

The WaveRoller From Finland

The Finnish WaveRoller is different in scale of the units, the capacity, and the actions being taken towards commercialization. Ridgewell says that there is a price reduction going on in offshore wind because the insurance costs decreased, and the financing is cheaper.

What are the benefits of wave energy?
Environment Friendly: Also - unlike fossil fuels - creating power from waves creates no harmful by-products such as gas, waste, and pollution. The energy from waves can be taken directly into electricity-producing machinery and used to power generators and power plants nearby.

waveroller wing

Recommended: The Earth As An Inexhaustible Clean Geothermal Energy Source

According to Ridgewell, there is another advantage. "We use existing, familiar technology." The back and forth movement of the water generated by the waves sets the WaveRoller panel in motion. The unit is installed below water at a depth of about 8 - 20 meters, where the wave action is at its most forceful. This way, it maximizes the power the WaveRoller panel can capture from the waves. A-single panel absorbs 1.5-2 MW of energy from the wave. The panel covers the entire depth of the water stream from the seabed to the water surface.

WaveRoller Technology

While the WaveRoller panel is in motion and absorbs the energy of ocean waves, the hydraulic piston pumps connected to the panel pump the hydraulic fluids in a closed hydraulic circuit. All parts of the hydraulic circuit are not displayed in the marine environment. They are embedded in an airtight construction inside the unit. These are supplied in energy storage and a smoothing system, which links to a hydraulic motor that drives an electricity generator. The electrical output of this renewable wave power plant is then connected to the electricity grid via a submarine wire. Each wave can produce 2MW about every ten seconds, but the digital flattening system feeds this into the network at a constant, flat rate of 400kw.

Is Wave Energy practical?
Clean, renewable energy is one of world's top priorities. Wave energy in particular is a highly desirable resource. Its practical worldwide potential is projected to be between 2 and 4 trillion kilowatt hours per year.

Graph pison, waveroller

Recommended: Geothermal Power Accessible As Wind And Solar Energy: Climeon

We need low, elemental energy as a continuous, and therefore fossil fuels and nuclear energy firms like to claim they are essential. Nevertheless, wave energy could produce the same, but then clean energy with zero emissions during use.

A good example is California. In the summer you have a lot of sun and wind, but in the winter it reduces enormously. That is precisely the moment when wave energy is the highest when big storms are coming.

The WaveRoller: What About Sea Life?

The big concern about the panels splattering in the sea is about the animals living there. How do animals deal with the WaveRoller? Ridgewell says that the WaveRoller attracts sea life. The coastline in Peniche, Portugal, is an EU Environment Protected Area, and until now, the Finnish company has dealt with the conditions.

Who Is AW-Energy?

What are the characteristics of waves?
Waves are disturbances that travel through a fluid medium. Several common wave characteristics include frequency, period, wavelength, and amplitude. There are two main type of waves, transverse waves and longitudinal waves.

Crane, waveroller, assembling

AW-Energy is a start-up company with a small team of 10-15 people. They have ambitious plans concerning renewable energy, especially sea energy. Big investors like Aura Capital, Fortum, John Nurminen Oy, Sitra, and the European Investment Bank support them.

AW-Energy has new plans with energy organizations and government departments. “Some countries do not have the energy price right now that would support it. But, some of those countries see the benefit of generating energy as the sun goes down. Other countries already have a high energy price, which means we can develop a profitable project.” Not every coastline is suitable. Where surfing is excellent, the wave energy is good.

AW-Energy hopes to have a customer who needs '15 units array' to start with, and Ridgewell wants to expand from there. These 15 units can supply a constant 400kw; that is 6MW renewable energy. This is enough to provide electricity to 6000 houses. That would be great to start!

The wave energy devices, built by AW-energy, are reliable, impressive, and as big as a bus. They are ready to be used. AW-Energy needs an ambitious, innovative customer who's prepared to take the first step. A customer who needs new energy sources. Who is it going to be? Let's hope that there is a turnaround of energy prices, and renewable energy objectives are now moving in the right place.

Before you go!

Recommended: Energy Miracle Algae. 10.000 Barrels A Day, Less CO2: 2025

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Writer, traveller and dreamer. Love to write, like to travel. Passion for language, cultures and what happens in the world. 

Writer, traveller and dreamer. Love to write, like to travel. Passion for language, cultures and what happens in the world. 

Green, Clean Ocean Energy: The WaveRoller

Green clean ocean energy like wave energy had many false starts. A Finnish company has been working on a 2MW prototype in Portugal. Can we finally use wave power to generate electricity? Green Clean Energy: The WaveRoller Wave energy is the energy that can be extracted from the rapidly changing water level at sea due to the presence of waves. Wave energy can be used to perform various tasks, including generating electricity, pumping water around, or desalinating water. The bigger the ocean, the higher the possibilities for speed and fetching energy - and given that Portugal has the entire Atlantic Ocean between the coastline and America, obtaining power is pretty good. What is wave energy and how does it work? Wave power is produced by the up and down motion of floating devices placed on the surface of the ocean or or back and forth motion by devices under water. In other words, wind produces waves, and then waves and or current produce energy. As the waves and or current travels across the ocean, high-tech devices capture the natural movements of ocean currents and the flow of swells to generate power The Power of Wave Energy Chris Ridgewell, CEO of AW-Energy, the Finnish company behind the WaveRoller, explains that there are different types of wave technology. "There are floating objects, things on land that bring in the water and drain it away. Instead, the WaveRoller is attached and hinged to the seabed, only about 10 meters deep, using the back and forth motion of the wave. While a typical solar panel can capture about 150 watts per square meter on average," says Ridgewell. "With wave energy, it is about 40,000 watts per meter. That's a tremendous difference." Recommended:  Blue Energy: Marine Renewables Show Promise in the UK The WaveRoller: Is This The First Time? Ridgewell is not the first one that got excited by the idea for wave energy. From 1855 to 1973, there have been 340 patents requested for sea power in the UK alone. None of them worked, but a man from Royan, France, M. Bochaux-Praceique, bored a hole in a cliff, to use a turbine for supplying his house from energy. {youtube}                                                                          WaveRoller deployment                                            Green Energy: The WaveRoller Sustainable Clean Ocean Power Since then, engineers have come up with the idea repeatedly. In the first years of 2000, we saw the first real breakthrough. For example, the Islay LIMPET in Scotland was the first commercial wave power device. The device was connected to the UK National Grid and should have a 500kw unit but was downgraded to 250kw. Eventually, it was finally shut down in 2018. Thereupon, Portugal came with the Pelamis Energy Converters, to transform the movement of ocean waves into electricity, with a much more promising 2.25MW of total installed power.  The WaveRoller From Finland The Finnish WaveRoller is different in scale of the units, the capacity, and the actions being taken towards commercialization. Ridgewell says that there is a price reduction going on in offshore wind because the insurance costs decreased, and the financing is cheaper. What are the benefits of wave energy? Environment Friendly: Also - unlike fossil fuels - creating power from waves creates no harmful by-products such as gas, waste, and pollution. The energy from waves can be taken directly into electricity-producing machinery and used to power generators and power plants nearby. Recommended:  The Earth As An Inexhaustible Clean Geothermal Energy Source According to Ridgewell, there is another advantage. "We use existing, familiar technology." The back and forth movement of the water generated by the waves sets the WaveRoller panel in motion. The unit is installed below water at a depth of about 8 - 20 meters, where the wave action is at its most forceful. This way, it maximizes the power the WaveRoller panel can capture from the waves. A-single panel absorbs 1.5-2 MW of energy from the wave. The panel covers the entire depth of the water stream from the seabed to the water surface. WaveRoller Technology While the WaveRoller panel is in motion and absorbs the energy of ocean waves, the hydraulic piston pumps connected to the panel pump the hydraulic fluids in a closed hydraulic circuit. All parts of the hydraulic circuit are not displayed in the marine environment. They are embedded in an airtight construction inside the unit. These are supplied in energy storage and a smoothing system, which links to a hydraulic motor that drives an electricity generator. The electrical output of this renewable wave power plant is then connected to the electricity grid via a submarine wire. Each wave can produce 2MW about every ten seconds, but the digital flattening system feeds this into the network at a constant, flat rate of 400kw. Is Wave Energy practical? Clean, renewable energy is one of world's top priorities. Wave energy in particular is a highly desirable resource. Its practical worldwide potential is projected to be between 2 and 4 trillion kilowatt hours per year. Recommended:  Geothermal Power Accessible As Wind And Solar Energy: Climeon We need low, elemental energy as a continuous, and therefore fossil fuels and nuclear energy firms like to claim they are essential. Nevertheless, wave energy could produce the same, but then clean energy with zero emissions during use. A good example is California. In the summer you have a lot of sun and wind, but in the winter it reduces enormously. That is precisely the moment when wave energy is the highest when big storms are coming. The WaveRoller: What About Sea Life? The big concern about the panels splattering in the sea is about the animals living there. How do animals deal with the WaveRoller? Ridgewell says that the WaveRoller attracts sea life. The coastline in Peniche, Portugal, is an EU Environment Protected Area, and until now, the Finnish company has dealt with the conditions. Who Is AW-Energy? What are the characteristics of waves? Waves are disturbances that travel through a fluid medium. Several common wave characteristics include frequency, period, wavelength, and amplitude. There are two main type of waves, transverse waves and longitudinal waves. AW-Energy is a start-up company with a small team of 10-15 people. They have ambitious plans concerning renewable energy, especially sea energy. Big investors like Aura Capital, Fortum, John Nurminen Oy, Sitra, and the European Investment Bank support them. AW-Energy has new plans with energy organizations and government departments. “Some countries do not have the energy price right now that would support it. But, some of those countries see the benefit of generating energy as the sun goes down. Other countries already have a high energy price, which means we can develop a profitable project.” Not every coastline is suitable. Where surfing is excellent, the wave energy is good. AW-Energy hopes to have a customer who needs '15 units array' to start with, and Ridgewell wants to expand from there. These 15 units can supply a constant 400kw; that is 6MW renewable energy. This is enough to provide electricity to 6000 houses. That would be great to start! The wave energy devices, built by AW-energy, are reliable, impressive, and as big as a bus. They are ready to be used. AW-Energy needs an ambitious, innovative customer who's prepared to take the first step. A customer who needs new energy sources. Who is it going to be? Let's hope that there is a turnaround of energy prices, and renewable energy objectives are now moving in the right place. Before you go! Recommended:  Energy Miracle Algae. 10.000 Barrels A Day, Less CO2: 2025 Did you find this an interesting article, or do you have a question or remark? Leave a comment below. We try to respond the same day. Like to write your article about Green Hydrogen? Click on  'Register'  or push the button 'Write An Article' on the  'HomePage.'
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