The Biden Administration set the goal of creating 30 gigawatts of offshore wind power by 2030, while protecting biodiversity and the marine environment.
The problem is that offshore wind turbines require massive concrete foundations to anchor them in place. Hydrodynamic forces can erode the soil around foundations, causing large holes.
To protect against this erosion (called “scour” in engineering) concrete is often installed in a mound around the turbines’ foundations. But this has a large impact on sensitive seabed ecosystems.
Israeli company ECOncrete Tech is joining forces with the US branch of Swiss multinational company LafargeHolcim, the largest cement manufacturer in the United States, to design and produce a unique ecologically beneficial concrete scour protection unit for offshore wind turbine foundations.
The unit will facilitate the growth of marine organisms, while meeting all industry standards for stabilizing the seabed.
“Offshore energy production is a rapidly growing market worldwide, and while there are certainly benefits of using renewable energy, there is also an impact of these giant structures on the sensitive underwater ecosystems,” said Ido Sella, CEO and cofounder at ECOncrete Tech. “We view our collaboration with LafargeHolcim as key to minimizing this impact.”
This three-year joint R&D project, already underway, is funded by a grant from Binational Industrial Research and Development (BIRD) Energy.
“We recognize that there are many paths to achieving our net zero commitment, and most require innovative partnerships and out-of-the-box thinking,” said Josep Maset, VP for commercial excellence at LafargeHolcim.
“The work we’re doing with ECOncrete Tech is a notable example of searching for solutions that enable increased use of renewable energy in an environmentally responsible way.”
A large-scale pilot project is planned to evaluate the ecological performance of the innovative units in an offshore environment before implementation in full-scale installations.
ECOncrete Tech brings, biodiversity, carbon storage and superior structural performance to any marine infrastructure. Its technologies have been integrated in more than 40 projects across eight countries and six seas.