OEG’s Return to the East Anglia Two Site: Preparing for Progress in Offshore Wind Energy
OEG has made its return to the East Anglia Two site, marking a crucial step in the development of the UK’s new offshore wind farm. Slated to generate 960 MW of clean energy, this project promises to play a substantial role in the UK’s renewable energy landscape. As seabed clearance activities commence, the importance of this preparatory work cannot be overstated.
Key Activities in Progress
According to a recently issued Notice to Mariners, OEG will be executing several essential tasks before construction kicks off. These include the disposal of unexploded ordnance (UXO), boulder clearance, and the removal of out-of-service cables. Located 33 kilometers off the coast of Suffolk, the project site presents various challenges, making the meticulous planning and execution of these tasks vital for ensuring safety and compliance.
Unexploded Ordnance (UXO) Disposal
One of the most pressing issues is the presence of UXOs, remnants from past conflicts that pose a risk to marine and construction activities. Between June and July, OEG is set to focus on the safe disposal of three confirmed UXOs employing Low Order Deflagration techniques. This method is designed to neutralize the explosives in a controlled manner, prioritizing both safety and environmental integrity.
Boulder Clearance
In addition to UXO disposal, the project involves relocating approximately 1,800 boulders from the seabed. Boulder clearance will take place primarily during June and July, but may extend into August depending on operational needs. This effort is crucial for ensuring that the seabed is adequately prepared for the installation of wind turbine foundations.
Cable Removal
The removal of between 12 and 15 out-of-service cables is scheduled for August and September. Ensuring that the site is free of obsolete infrastructure is vital for the efficient installation of new components, facilitating a smoother construction process as the project progresses.
Future Construction Plans
East Anglia Two is set to enter the construction phase in 2026/2027, a timeline that highlights the urgency and importance of the current clearance activities. Developed by ScottishPower Renewables, the offshore wind farm is part of a larger initiative known as the East Anglia Hub, which also includes East Anglia One North and East Anglia Three.
The Turbines and Their Origins
The wind farm will be equipped with 64 Siemens Gamesa SG 14-236 DD wind turbines. These turbines are slated to be installed on monopile foundations supplied by Sif and Smulders. Moreover, Smulders will also be responsible for the construction of the project’s offshore substation (OSS), a critical component of the infrastructure required to deliver electricity to the grid.
Key Partnerships and Contracts
Earlier this year, Smulders HSM, a subsidiary of Eiffage Métal, commenced construction on the OSS topside and jacket foundations. This timely initiation underscores the well-coordinated partnerships necessary for successful project delivery.
Cable Supply and Installation
The supply and installation of export and inter-array cables are also pivotal to the project’s success. Nexans has been awarded the contract for delivering the export cable, while inter-array cables will come from Hellenic Cables. Installation responsibilities have been entrusted to Seaway7, ensuring a multi-faceted approach to bringing this ambitious project to life.
Safety and Environmental Considerations
As OEG undertakes these various preparatory tasks, safety and environmental integrity will remain paramount. The techniques employed for UXO disposal and boulder clearance have been meticulously chosen to minimize disturbance to the surrounding marine environment, reinforcing the commitment to sustainable energy development.
In summary, the activities at the East Anglia Two site serve as a foundational step in the transition to renewable energy in the UK. With construction set to commence in the coming years, the focus on clearing the seabed will allow for a safer, more efficient path to harnessing wind energy off the Suffolk coast.