Type of infrastructure:
Location:
Country:
USA
Implementation period:
2022-ongoing
Implemented by:
ECOncrete, Stony Brook University
TRL:
7
Funding:
NYSERDA - The New York State Energy Research and Development Authority

Stakeholder engagement

This research project was supported by the New York State Department of Environmental Conservation (DEC), which selected the optimised deployment site. The scour protection units were manufactured and installed by local partners. The New York State Energy Research and Development Authority (NYSERDA) funded scientific monitoring activities to better understand the effects of eco-engineered concrete structures on marine biodiversity and their implications for offshore wind development going forward. This multi-year ecological monitoring project involves a collaboration with researchers from Stonybrook’s School of Marine and Atmospheric Sciences. As part of this initiative, the funding supported the participation of student researchers from the New York Harbor School, located on Governors Island, New York, NY.

Knowledge sharing

ECOncrete regularly collaborates with universities and research institutes on testing and monitoring activities. The company presents its findings at scientific and industry-focused conferences and webinars, such as the 2024 State of the Science hosted by NYSERDA, the WindEurope Annual Event in 2024, the Oceantic Research & Innovation Webinar Series, and the DMEC Nature-Inclusive Design (NID) Conference. The project is also featured on the Rich North Sea Toolbox (HERE).

Database Project

ECOncrete Scour Protection: Fisheries and Biodiversity Research Project

Objectives

The project evaluates the effects of nature-inclusive design (NID) scour protection, on marine biodiversity and fish populations compared to traditional scour protection methods.


Short description

Scour protection is designed to protect offshore wind monopiles from scouring and various materials can be used for this purpose. In 2022, ECOncrete, in coordination with the New York State Department of Environmental Conservation (DEC), deployed over 4,000 eco-engineered scour protection units at the Twelve Mile ReefThe Twelve Mile Reef testing site is located in the Atlantic Ocean, 12.0 nautical miles from Moriches and Shinnecock Inlets and extends for 850 acres (2025 yards x 2025 yards) wide, and 123 to 143 feet deep. , an offshore site off Long Island, New York. Additionally, they deployed 300 tons of rock material to compare the results. Locally manufactured, the NID scour protection units were installed with standard offshore wind installation equipment and procedures.

In October 2023, a few months after the installation of the scour protection, research teams from Stony Brook University, in collaboration with ECOncrete, initiated a 12-month biological monitoring programme. This included environmental DNA (eDNA) analysis, high-resolution multi-beam mapping and finfish habitat and community modelling. Supported by the New York State Energy Research and Development Authority (NYSERDA), the scientific monitoring assessed biological growth within the scour protection system and surrounding seabed environments, focusing on changes in fish populations and diversity associated with the scour protection units.

The ecological study results 18 months post-deployment revealed that the NID scour protection solution enhanced habitat potential for local species and improved the ecological function of both the NID scour protection and its surroundings, leading to increased biodiversity compared to the rock control site. Additionally, extensive 3D physical model tests were conducted at the Polytechnical University of Madrid (Spain) and the Coastal and Ocean Basin in Ostend (Belgium) to assess the hydraulic stability of the NID scour protection system around the monopile on both hard and a movable (sandy) seabed. These tests, performed under severe wave load conditions and using different scour protection configurations to simulate real-world conditions in the Atlantic and North Seas, confirmed the feasibility of this innovative solution.

These findings demonstrate ECOncrete’s NID scour protection system’s capability to reduce the ecological footprint of offshore wind infrastructure on marine ecosystems while supporting fish populations in the surrounding area. At the same time, the system meets industry requirements for durability, hydraulic stability and seamless operational functionality.