Optimal conditions for marine and offshore wind energies
Thanks to its strong ocean waves, currents, and winds, Bretagne is a region with a high potential for harnessing marine renewable energy. It also enjoys a strong skills base in the maritime industry, which is crucial for growing this emergent sector along with the new technology required.
Proof of these good conditions is the multitude of projects in development, testing or pilot phase around the Breton coast:
Focus on flagship projects
BOTTOM-FIXED OFFSHORE WIND FARM BAY OF SAINT-BRIEUC
62 x8mW wind turbines. Commissioning planned for 2023.
- Goal: With 496 MW of installed capacity and 1,820 GWh of annual production, the project aims to supply the equivalent of the consumption of 835,000 inhabitants (including heating).
- Project developers: Ailes Marines (IBERDROLA), Siemens Gamesa, Navantia/Windar
- Technology employed:
- 62 wind turbine Siemens Gamesa Renewable Energy SG 8.0-167 DD
- jacket foundation (Navantia Windar)
- Output power: 496 MW.
- Overall cost: €2,5 billion.
TIDAL TURBINE TEST SITE IN PAIMPOL BRÉHAT
A test site for scale 1 tidal turbines in oceanic conditions. Available to all project leaders, the site is operated by EDF, Seeneoh and Bretagne Ocean Power with the support of the Brittany Region.
OCEANIC TEST SITE FOR FULL-SCALE TURBINE
- Goal: up to 2 MW grid connection
- Project developers: EDF, Seeneoh, Bretagne Ocean Power
- Open Hydro and CMN HydroQuest tests from 2010 to 2021
- Minesto test planned in 2022
- European project: TIGER Interreg
OFF-GRID ISLAND MODEL
The island of Ouessant is a model of a 100% autonomous island using 100% renewable energy and includes the connection of a tidal turbine, a photovoltaic power plant and an electricity storage system. Smart grids regulate and manage consumption and production using an energy management system.
It is a genuine model of energy autonomy that is ready-to-market and can be replicated in other energy-isolated areas.
Tidal Turbine / Sabella D12
- Goal: develop a simple & robust marine turbine, with high reliability and low maintenance.
- Project developers: Sabella, AKUO Energy.
- Output power: 2 tidal turbines of 12m diameter generating 500 kW each. (Phares project)
- Technology employed: Bottom-fixed tidal current turbine designed by Sabella. 20/25 year operational lifespan.
- European project: Ice Interreg
SAINTE ANNE-DU-PORTZIC (BREST)
As well as its tanks for testing wind turbines, IFREMER enables companies such as Eolink to test the most innovative floating wind turbine prototypes at 1/10th scale.
EOLINK PROJECT FLOATING WIND
- Goal: Produce a new floating wind turbine on tripod (scale 1/10)
- Project developers: Geps Techno, WEC and Eolink with the support of IFREMER and Regional Council of Bretagne
- Technology: EOLINK design targets the biggest power/weight ratio in order to get the best-in-class LCOE. First time such ratio between swept area and floater’s size is tested.
- Output power: 12 MW (Scale 1).
DIKWE PROJECT (PROTOTYPE)
- Project developer: Legendre
- Technology: It is based on a wave motor system with oscillating flaps.
FLOATING WIND TURBINE PILOT FARM AT GROIX BELLE-ILE
1st real-scale test for the 3 x 9,5 MW Eolfi wind turbines. Commissioning planned for 2024.
- Goal: set up a pilot farm with 3 turbines to deliver 28,5 MW.
- Project developers: Shell Eolfi, CGN Europe Energy, Banque des Territoires, MHI Vestas and the support of ADEME
- Size & siting: Height of the multi-MW prototype: 203 m. Water depth: 60.
- Output power: 28,5 MW.
- Overall cost: €230 m. This project enjoys support from the French investment expenditure programme.
TIDAL TURBINE TEST SITE / CHANTIER BRETAGNE SUD
GUINARD ENERGIES PROJECT
- Goal: construct, install and qualify an industrial demonstrator.
- Project developers: Guinard Energies (partners: Bernard Bonnefond, ENSTA Bretagne, IFREMER, etc.).
- Technology employed: High-output ducted tidal turbine (doubles the power output), self-orients in the direction of the tidal stream; low weight-to-power output ratio and compactness making it efficient even in shallow waters (10 to 12 m depth), floating base that can be immersed and retrieved using ballast tanks (limiting operating costs).
- Size: height on the seabed, 8 m.
- Weight: 90 t (32 t without the base).
- Output power: 350 kW.
- Overall cost of the demonstration phase: €4.25 m (expected financing: 60% private funds and 40% public funds).
EUROPEAN PROJECT : ELEMENT WITH NOVA INNOVATION
AUDIERNE WAVE TECHNOLOGIES
- Esquibien breakwater in Audierne
- DIKWE full scale prototype project. (to be studied)