RWE deploys ARC’s biodiversity boosting reef cubes

Co-funded by Innovate UK, RESP is the world’s first full-scale deployment of reef cubes, a sustainable alternative to traditional rock scour protection that also promotes marine biodiversity. The cubes come in 15cm and 35cm sizes and have textured surfaces and crevices to attract species such as seabass, brown crab and starfish.

“RESP reflects RWE’s commitment to pioneering nature-positive solutions that support the resilience of our offshore wind assets and the biodiversity of marine ecosystems,” said Sven Utermöhlen, chief executive of RWE Offshore Wind.

Over the past 18 months, the project has progressed from concept to implementation. Hydrodynamic testing at HR Wallingford confirmed the structural stability of the reef cube scour pads, while ecological baseline surveys and marine licensing have enabled full-scale deployment. More than 75,000 reef cubes – made from recycled, low-carbon materials – are now set to be installed offshore, with all deployment contracts finalised.

The RESP pilot will provide vital insights into how nature inclusive design can be integrated into offshore energy infrastructure, delivering both ecological and engineering benefits.

“This pilot creates valuable habitats while meeting engineering needs,” said Tom Birbeck, founder and chief executive of ARC Marine.

“We’re thrilled to see reef creation being actively explored during offshore construction.”

The initiative supports RWE’s Growing Green strategy and its ambition to achieve a net positive biodiversity impact for all new assets by 2030.