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All news, insights and events
All news, insights and events

Principle Power partners with an innovative Irish company to develop novel mooring solutions for transitional waters

Principle Power continues to be at the forefront of innovation in the floating wind sector. The international consortium led by Principle Power and composed of National Renewable Energy Laboratory, Aker Solutions and American Bureau of Shipping and Technology From Ideas has been awarded a contract by the US Government’s National Offshore Wind Research and Development Consortium “NOWRDC” for a project entitled “Demonstration of Shallow-Water Mooring Components for Floating Offshore Wind Turbines (ShallowFloat).”


The project

ShallowFloat aims to demonstrate the feasibility and benefits of soft mooring designs for floating offshore wind turbines by incorporating an innovative load reducing polymer spring in the mooring lines. The spring technology developed by TfI, has the potential to reduce peak loads by more than 50%, enabling reduction in both size and required holding capacity of anchors. As such, these polymer springs are expected to reduce installation vessel requirements, enabling drastic reductions in cost for FOWT station-keeping systems in shallow waters

The challenge of shallower waters

Principle Power has a proven track record in the design, procurement, and installation of conventional and innovative station-keeping systems for its WindFloat® technology. We have designed mooring systems for water depths as low as 48 m with simple components that are inexpensive to install. In shallower water, however, mooring requirements tend to increase exponentially. Incorporating TfI’s polymer spring into this mature mooring system design framework has high potential to simplify deployment in challenging shallow water sites.

The study

The objective of this NOWRDC-funded study is to design a bankable, low-cost, shallow-water mooring solution that has an Approval-in-Principle (AIP) from the American Bureau of Shipping and provide developers with reliable technical and economic data about the ability of floating foundations to potentially offer a more competitive, lower risk solution compared to bottom-fixed jacket structures in certain shallow water sites.

Cian Conroy, Senior Business Development Manager – Europe, Principle Power Inc.:

“As we see countries like Ireland target increasing volumes of offshore wind, there is a real opportunity to capture first mover advantages for both the country and the supply chain”. “We are excited to be working with TfI. As we look to the growth of the floating offshore wind sector, deployment in shallow waters will play a major role in meeting targets and, for this, innovation in the mooring space will be key” he added.