Cardiff Tidal Lagoon

Tidal lagoon electricity generating station with a potential generating capacity of 250MW up to a possible 320 MW. A seawall attached to the foreshore, at its western extent approximately 2 km from the entrance to Cardiff Bay, and at its eastern extent approximately 2km from the mouth of the River Usk. The furthest offshore extent is approximately 8km from the foreshore to the centre of the Severn Estuary.

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Project Manager

Tidal Lagoon Power

Additional Information

Project Website

Project Status Is the project actively being planned or is deployed in the water (active)? Or was the project canceled or completed (inactive)?

Inactive

Project Life Cycle Project Progress through life cycle:<ul> <li>Planned: Project has identified a deployment location and is preparing for deployment</li> <li>Operational: Project is deployed in the water and is active</li> <li>Completed: Project was previously deployed in the water</li> <li>Decommissioned: Installation has been fully removed in accordance with regulations</li> <li>Canceled: Project was canceled before being deployed in the water</li></ul>

Canceled

Max Rated Power Capacity The maximum amount of electricity that can be produced by project, based on available resources and device nameplate capacity.

3000 MW

Project Start Year

2014

Energy Resource

Tidal

Project Scale

Full-scale

Number of Devices

100

Waterbody

Severn Estuary

Site Characteristics Geographic characterization for the project location:<ul> <li>Open Ocean: Main body of ocean, not enclosed or partially enclosed by land</li> <li>Coastal: Open water near the coast, spanning between land and shelf boundary</li> <li>Enclosed Bay: water that is partially surrounded by land, with a mouth open to larger water</li> <li>Constricted Channel: A channel where water flows quickly due to narrowing by the land</li> <li>River: Water flowing from land towards a larger body of water</li></ul>

River

Country

United Kingdom

Last Modified

10 June 2025

Citation Formats

“Cardiff Tidal Lagoon.” Marine Energy Projects Database: Projects, PRIMRE, United States Department of Energy, https:https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Projects/Cardiff_Tidal_Lagoon. Accessed <day> <monthRoman> <year>.

Marine Energy Projects Database: Projects. <year>. "Cardiff Tidal Lagoon." Accessed <monthRoman> <day>, <year>. https:https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Projects/Cardiff_Tidal_Lagoon.

PRIMRE/Databases/Projects Database/Projects/Cardiff Tidal Lagoon

Cardiff Tidal Lagoon

Citation Formats