The London start-up Spiralis Energy wants to generate energy in the English Channel with a specially developed tidal power plant. It is based on the principle of the Archimedean screw.
In addition to solar energy and wind power, wave energy is also increasingly becoming a promising energy source. More and more companies around the world are using hydropower to generate electricity. An example is this London start-up Spiralis Energywhich wants to test a screw-like tidal power plant in the English Channel at the end of 2024.
Unlike wind and solar energy, which are easier to predict and use, harnessing tidal energy requires sophisticated systems. Because these are supposed to convert even the smallest wave movements into energy. The special thing about the generator from Spiralis Energy is that it generates electricity effectively and at the same time is made from recycled plastic waste.
Tidal power plant in the English Channel comes from the 3D printer
The tidal power plant is based on a large Archimedean screw modified with foils. This is intended to help increase torque and achieve higher energy yield. Although the screw is underwater, the energy is generated above water. This should in turn make maintenance of the system easier.
The modular design allows for easy 3D printing production and repair, even in remote locations. Spiralis Energy has already concluded an agreement with the Channel Island of Alderney for the future test phase. The use of two axial skelters is planned. These are each around 20 meters long and are located on floating platforms.
Pilot project initially examines tidal currents
However, the project participants do not want to generate energy during the tests. First, the team wants to analyze tidal currents in the cold months. If the test is successful, Spiralis Energy could set up an office in Alderney and feed energy into the local grid at a reduced price.
According to the company’s website, the Axial Skelter can deliver the lowest energy costs compared to other energy generation options worldwide. A first test of the prototype took place in May 2024 and was successful. The full-fledged generator has an output of 500 kilowatts at a flow speed of 3.5 meters per second.
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