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Apollo scores contract from Celtic Sea Power

4C Offshore | Chloe Emanuel
By: Chloe Emanuel 21/03/2023 Apollo

Apollo announce the contract award from Celtic Sea Power of the pre-FEED contract for the 400 MW Pembrokeshire Demonstration Zone Multi-connection Offshore Substation (PDZ MOS) and 2x 1GW MOS’s targeting The Crown Estate Refined Area of Search (RAoS) A.

Located 19 km off the Pembrokeshire coast, the PDZ MOS project is designed to allow offshore renewable energy technology developers easy access to a consented test site complete with a grid connection to prove their technology in the offshore environment. Partly funded through the European Regional Development Fund, the project also aims to stimulate further investment in the region for the floating offshore wind (FLOW) market.  Additionally, the 2x 1GW MOS’s being developed for the RAoS A will demonstrate what a coordinated grid connection could look like for the commercial developments in the Celtic Sea.

This award builds on a collaboration between Apollo and Celtic Sea Power in the concept phase to help define the offshore design envelope and onshore connections of the assets. It is hoped that the outputs of this study will provide confidence around a phased and coordinated FLOW development in the Celtic Sea.


Jonathan White, Regional Director of Apollo comments: “This contract award builds on a successful first phase of the project and underpins the competency and quality of the engineering team at Apollo. The PDZ MOS is a unique opportunity for the region to become a leading presence in the emerging FLOW market and we look forward to a continued relationship with Celtic Sea Power to help realise this important project."

Through increasing efficiency and reducing development cost, the cost of energy is predicted to be lower for the UK consumer, whilst also delivering environmental benefits. The Crown Estate bidding round to release 4GW of FLOW commences this August with an ambition to realise a further 20GW in the future. The commission represents an important step in a coordinated approach to the development of FLOW and other marine generation technologies in the Celtic Sea.


For more information on offshore wind farms worldwide, click here.

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