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Pembrokeshire Wave Energy Test Site

A new wave energy site located off the South Pembrokeshire coastline.

The Pembrokeshire Demonstration Zone is a new wave energy site located off the South Pembrokeshire coastline.  Wave Hub Limited is the seabed leaseholder.

The zone comprises a 90 sq km area of seabed with water depths of approximately 50 metres and a wave resource of 19 kW/m.  It is located between 13-21kms offshore and has the potential to support the demonstration of wave arrays with a generating capacity of up to 30MW for each project.

The zone is managed by Wave Hub Limited, the operating company for the Wave Hub test site in Cornwall.  Our aim is to help marine energy developers from around the world test in open sea conditions to drive research and innovation, overcome the final hurdles to full commercialisation and foster a growing marine energy industry in the regions we are active in.  

The Pembrokeshire Demonstration Zone will provide a consented and grid connected area for full scale demonstration of wave arrays by developers.


The zone is located in an area with a number of factors that make it ideal for marine energy development:

  • A 400kV transmission line and substation located coastally at the Pembroke Power station
  • World class deep water port facilities and support services provided through the UK’s third busiest port complex
  • An excellent energy sector supply chain and workforce
  • A dedicated, Government backed Energy Enterprise Zone with business development incentives
  • Experience in constructing and deploying Wales’ first tidal stream device
  • Access to expert academic and research facilities
  • An EU Structural Fund Programme for West Wales and the Valleys that has prioritised marine energy

Wave Hub Limited has secured support from the Welsh Government, including the European Regional Development Fund to undertake the first stage of developing the site.  

A feasibility study was initiated in May 2017 to:

  • Maximise the versatility of the site to provide the marine conditions and infrastructure for multiple wave devices/developers
  • Prepare a strong business case for securing funding to enable the zone to be developed
  • Design the business delivery model for the site to ensure long term viability
  • Actively engage with key stakeholders
  • Undertake the preliminary steps in obtaining consent for the site
  • Estimate the socio-economic benefits of the PDZ


The first phase of development work will be completed in early 2018. The Pembrokeshire Demonstration Zone could be built by 2021, with the first devices installed shortly afterwards.

Development of the marine energy sector in Pembrokeshire is supported by Marine Energy Wales and the Pembroke Dock Marine project.

Marine Energy Wales brings together technology developers, the supply chain, academia and the public sector to establish Wales as a global leader in sustainable marine energy generation, making a significant contribution to a low carbon economy.

The Pembroke Dock Marine project will regenerate an area of Pembroke Dock to create a dedicated site which will be used as a base by marine energy developers to progress their devices from an idea to a commercial product.


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