Both Bellrock and Broadshore are in the early development stages. As part of their planning processes, the partnership between Renewable Energy Providers must decide which ports to use for assembling the turbines and towing them into position.
They were considering six ports around Scotland and wanted to understand how each option would affect transport and installation time, factoring in tow speeds and local wind and wave conditions.
Because there are so many complex and dynamic variables involved in turbine transport and installation, predictive simulation was the ideal way to understand how different ports and routes would affect timescales. In February 2023, the partnership chose our Twinn Predictive Simulation Suite to conduct the analysis.
To help identify the most efficient turbine transport and installation scenarios, we broke the analysis down into 3 segments:
We built a model using Twinn Witness predictive simulation software, which drew on the towage route and metocean analyses to assess the performance of 50 scenarios. The model accounted for the full lifecycle of activity – from assembly to hook up, tow, installation and vessel return.
For Bellrock, the simulation analysis showed that choosing Aberdeen as the construction and integration port led to the fastest installation time. The second-fastest involved using Aberdeen as the integration port and either Dundee or Firth of Forth as the construction port.
It was also the fastest to use Aberdeen as the construction and integration port for the Broadshore installations, but it was a marginal advantage compared to using Aberdeen for integration and Dundee for construction.
Importantly, the simulation also quantified the impact of speeding up installation duration, lowering the maximum wave height limit and increasing the tow speed. These changes had different effects for different port combinations, giving the partnership various options as they look at the most efficient overall way to execute the projects.
Thanks to the playbook, they can now make more informed, evidence-based decisions on port selection – so clients can hit their targets while saving money on transport and installation.