Dynamic mooring: a game-changer in offshore wind
CategoriesSustainable News

Dynamic mooring: a game-changer in offshore wind

Spotted: Sharp cost rises meant that 2023 was a difficult year for offshore wind, with several planned offshore projects needing to be reevaluated or cancelled. But despite these challenges, innovation in the area continues apace. Floating turbines, for example, make things easier, especially in terms of reaching deeper waters and windier environments, but engineering platforms to be durable and efficient enough is tricky. This is where Gazelle Wind Power comes in. 

The Irish company has designed and pioneered a modular, lightweight platform that can be deployed in far deeper waters than previously possible for offshore turbines. The three pivoting arms on the outside of the platform are anchored to the seabed, and these cables run over the tripodal arms to connect to a counterweight underneath the platform in the centre.

Video source Gazelle Wind Power

This innovative counterweight system enables dynamic mooring, meaning the platform can move up and down and side to side with the movement of the waves while minimising tilting. By reducing tilting, it keeps the pitch angle (the angle of the turbine blades) below five degrees, which cuts unnecessary wear and tear on the turbine. 

Compared with current catenary mooring designs, whereby a platform is held in place by long lengths of rope anchored to the sea floor, Gazelle’s system achieves a 75 per cent reduction in required mooring length in water that is over 100 metres deep. What’s more, the platform reduces both the turbine’s carbon footprint and infrastructure requirements as it uses less steel and concrete than other conventional designs, making it much lighter, cheaper, and easier to assemble. 

As we edge closer to net-zero deadlines, innovators are finding new ways to optimise green energy generation. Springwise has also spotted this company that is revolutionising wind turbine manufacturing with spiral welding as well as these alternative energy solar nanogrids that bring light to disaster-hit areas.

Written By: Archie Cox

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Making waves with floating offshore solar panels
CategoriesSustainable News

Making waves with floating offshore solar panels

Spotted: According to the International Energy Agency’s Renewables 2023 report, last year saw a ‘step change’ in renewable capacity additions, driven in large part by solar power, particularly in China. And, in the year ahead, it is expected that the world will pass an important milestone with the combination of solar and wind forecast to generate more renewable electricity than hydropower for the first time.

Despite this heartening progress, there is still scope for innovation in renewable generation, and not every problem is solved. For example, offshore wind had a difficult year in 2023, and Netherlands-based energy company SolarDuck believes that another offshore technology will become an important part of the energy mix.

The startup believes that offshore solar power will be a key component in the push to meet net-zero emissions goals. The company’s founders all have experience in the energy and maritime sectors, expertise that lent itself to the creation of low-maintenance, offshore, floating solar panels designed specifically to withstand high-velocity winds and waves for up to 30 years.  

The patented design includes built-in safety aspects, along with improved means of access for maintenance teams. The solar panels are arranged in a triangle shape with a 10-degree tilt to help maximise self-cleaning capabilities and are placed on a floating foundation several feet above the water. Being slightly raised helps minimise corrosion and marine growth, and each structure is designed to be easily connected to another for quick scalability of energy supply.  

Sea water provides an important cooling factor that helps the panels maintain higher levels of conversion efficiency. SolarDuck plans to generate at least one gigawatt of energy from its solution annually by 2030.  

From a solar-powered cooker to new means of rejuvenating aging PV panels, solar power is such as important source of renewable energy that Springwise’s library contains a range of examples of innovations working to reduce the world’s dependence on oil and gas.

Written By: Keely Khoury

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Growing seaweed between offshore wind turbines
CategoriesSustainable News

Growing seaweed between offshore wind turbines

Spotted: The global commercial seaweed market was valued at almost $17.9 billion (around €16.9 billion) in 2021 and projected to keep growing. This growth is driven by increased use of seaweed in food and cosmetics, and its use as a fertiliser. However, seaweed is disappearing from many places where it used to thrive because of global warming.

At the same time seaweed farming is becoming more difficult, the number of offshore wind farms is growing. Now, non-profit North Sea Farmers hopes to put the two together by locating seaweed farms between offshore wind turbines. North Sea Farmers plans to install its first seaweed farm, located off the coast of the Netherlands, this year and begin harvesting in Spring 2024. The 10-hectare farm is expected to produce at least 6,000 kilogrammes of fresh seaweed in its first year.

The demonstration project will be the world’s first commercial-scale seaweed farm located between offshore wind turbines. The aim is to kickstart more innovation in seaweed agriculture.

Eef Brouwers, Manager of Farming and Technology at North Sea Farmers, said: “Potentially, up to 85,000 full-time jobs could be created in the European seaweed sector by replicating North Sea Farm 1 across the North Sea.”

The project has received €1.5 million in funding from Amazon’s Right Now Climate Fund, which will be spent on constructing the farm.

Seaweed is not only used in food and cosmetics. Springwise has also spotted a seaweed extract that could reduce the methane emitted by cattle, a seaweed-based packaging, and the use of seaweed-derived materials to prevent dendrite growth in batteries.

Written By: Lisa Magloff

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