HydroQuest

HydroQuest SAS
IndustryRenewable energy
Founded2010 (2010) in Grenoble, France
Headquarters
Meylan
,
France
Key people
Thomas Jaquier (CEO)
ProductsTidal turbines
ParentCMN Naval 
Websitehydroquest.fr/en/

HydroQuest SAS is a French developer of vertical-axis turbines that generate electricity from tidal stream currents. Founded in 2010 in Meylan, Grenoble, the company is based in the Inovallée science park.[1][2]

HydroQuest has installed several small in-river turbines in France and French Guiana and tested a 1 MW tidal stream turbine off the coast of Brittany between 2019 and 2021. Together with partners, the company is developing the 17 MW FloWatt project, which will consist of six tidal stream turbines. The pilot farm is expected to be commissioned in 2028.[3][4]

Device concept

The HydroQuest turbine is a double vertical-axis system with counter-rotating blades, drawing on Darrieus and Achard turbines concepts.[5]

After gaining experience in river-current turbines, HydroQuest expanded into tidal-stream technology in 2016.[6] The tidal stream design consists of two pairs of vertical-axis turbines stacked on two parallel shafts. Each turbine has three blades, with the upper rotor rotated 60° relative to the lower to minimise loading.[5] The rotors were also designed to turn slowly, at around 10–15 rotations per minute, to reduce risk to marine wildlife.[7]

The first-generation tidal turbine included lateral ducts, which were removed in the next-generation design for FloWatt to reduce weight, loads, and costs. The blades have also been redesigned to improve performance.[8]

History

HydroQuest was founded in 2010 in Grenoble to develop a robust vertical-axis turbine technology for river and tidal currents.[9]

In 2013, HydroQuest installed a turbine in the Oyapock river in French Guiana, powering the 200 inhabitants of the Camopi village previously relying on a diesel generator.[1][10]

A 40 kW HydroQuest 1.40 was tested in the Loire river in Orléans in late 2014, connecting it to the French electricity grid in September 2015.[11] In 2016, it was reported to be the only operational grid-connected fluvial hydro-kinetic turbine in France, having operated for two years.[12]

HydroQuest has collaborated with IFREMER since 2015. In January 2024, they launched the joint VERTI-Lab (vertical axis laboratory), to create specific analysis tools to support the development of vertical axis tidal stream turbines.[13][14]

In 2024, HydroQuest joined the Ocean Energy Europe (OEE) Board of Directors as a lead partner.[6]

River Rhône turbines

In 2018, the HydroQuest-Hydrowatt Group installed four grid-connected turbines in the river Rhône near Lyon. They were installed upstream of the Pont Raymond Poincaré near the Parc de la Feyssine. Each turbine was rated at 80 kW, a total of 320 kW, and the project was expected to produce 1 GWh of electricity, or around the average annual consumption of 400 households.[15] The turbines were built by Constructions Mécaniques de Normandie (CMN) in Cherbourg. The farm was inaugurated on 21 December 2018.[2]

A project to install a 2 MW project consisting of 39 HydroQuest turbines, located downstream of the Génissiat Dam on the Rhône, was approved in 2017 by the French Agency for Environment and Energy Management (ADEME).[16] The planned installation was intended to generate enough electricity to supply approximately 2700 inhabitants.[9] It was expected to be built in 2019,[2] but the project appears to have stalled.

OceanQuest testing at Paimpol–Bréhat

A 1 MW OceanQuest turbine was tested at Paimpol–Bréhat between April 2019 and December 2021. It was again constructed by CMN in Cherbourg, and consisted of four vertical axis turbines each with three blades, mounted in pairs on two shafts. Each rotor was 3.8 m high with a 4 m radius. These were mounted in a frame 9.8 m high and 24.7 m wide, which housed two permanent magnet generators at the top of each shaft. The device sat on a tripod foundation. The power curve of the turbine was certified by Bureau Veritas against IEC TS-62600-200.[5][17][18][19]

In 2025, the Paimpol–Bréhat tidal test site was transferred from its historical operator EDF to the Open-C Foundation, which now manages several French marine renewable energy platforms.[20]

FloWatt project

In collaboration with CMN and renewable energy company Qair, HydroQuest is developing the FloWatt project, a tidal-stream farm to be located at Raz Blanchard, Normandy. This will consist of six HydroQuest turbine units, each rated at 2.8 MW, for a total capacity of 17 MW.[3] The turbines will be constructed by CMN in Cherbourg. Each unit is 21 m tall, 26 m wide, with a pair of three-bladed turbines mounted on a vertical shaft either side of a central structure.[21]

The Windstaller Alliance, a joint venture between Norwegian companies Aker Solutions, DeepOcean and Solstad Offshore, was contracted to undertake a front-end engineering design for the subsea power systems of the FloWatt project.[22]

In early 2025, HydroQuest signed a contract with the Loire-Atlantique–based company Loiretech for the manufacture of 72 composite blades for the FloWatt pilot farm.[4]

The French Government is supporting the project with €65m funding and dedicated revenue support for the electricity generated.[23] In September 2023, HydroQuest launched a crowdfunding campaign, seeking to raise a further €1.5m for the project.[24] In October 2024, it was announced that HydroQuest and Normandie Hydroliennes had been awarded €51m between them from the European Union's Innovation Fund to develop 29 MW of tidal stream capacity at Raz Blanchard.[25][26]

Construction of the turbines will begin soon at the CMN shipyard in Cherbourg, with installation planned 3 km offshore at a depth of around 30 m. The pilot farm is expected to be commissioned[4] in 2028, depending on successful deployment and grid connection.[3]

Company structure

HydroQuest is a French company headquartered in Meylan, near Grenoble. The company develops river and tidal stream turbines and is based in the Inovallée technology park.[1][2] It is led by Thomas Jaquier.[7]

HydroQuest is a subsidiary of CMN Naval,[27] a French multinational company in the shipbuilding sector, which also includes Constructions Mécaniques de Normandie from Cherbourg.[28]

References

  1. ^ a b c "About us". HydroQuest. Retrieved 2 January 2024.
  2. ^ a b c d Barbaux, Aurelie (21 December 2018). "La PPE ignore l'hydrolien? Hydroquest inaugure la première ferme fluviale au monde" [Does the EPP ignore turbines? Hydroquest inaugurates the world's first river farm]. L'Usine Nouvelle (in French). Retrieved 15 November 2024.
  3. ^ a b c Sanches, Rafael (26 May 2025). "EU taxpayers on the hook for tens of millions for tidal turbine farm demonstration project". Baird Maritime. Retrieved 16 December 2025.
  4. ^ a b c Lucot, Sebastien (9 March 2025). "HydroQuest signe un contrat de 72 pales pour la ferme pilote hydrolienne Flowatt au large de La Hague" [HydroQuest signs contract for 72 blades for the Flowatt tidal turbine pilot farm off the coast of La Hague]. La Presse (in French). Retrieved 16 December 2025.
  5. ^ a b c Moreau, Martin; Germain, Grégory; Maurice, Guillaume; Aloïs, Richard; Coque, Raphaël (September 2021). HydroQuest: Feedback from Paimpol-Bréhat and validation of the design method. Proceedings of the 14th European Wave and Tidal Energy Conference 5-9th Sept 2021, Plymouth, UK – via ResearchGate.
  6. ^ a b "HydroQuest joins Ocean Energy Europe board". Renewable Energy News. 16 September 2020. Retrieved 16 December 2025.
  7. ^ a b Pargamin, David (13 October 2021). "Avec HydroQuest, l'hydrolien prend le large" [With HydroQuest, tidal power sets sail]. Challenges (in French). Retrieved 16 December 2025.
  8. ^ Germain, Gregory; Bennis, Anne-Claire; Coquet, Raphaël; Guillo, S; Lafosse, M (October 2022). The FloWatt Project. ICOE-OEE 2022 – International Conference on Ocean Energy and Ocean Energy Europe’s annual event, Donostia–San Sebastián, Spain.
  9. ^ a b Gallien, Laurent (3 March 2017). "Hydroquest, dans la longue lignée de la "Houille blanche" grenobloise" [Hydroquest, following in the long tradition of Grenoble's “white coal”]. ICI (in French). Retrieved 16 December 2025.
  10. ^ Mallard, Kathleen; Garbuio, Lauric; Debusschere, Vincent (1 January 2020). "Towards sustainable business model and sustainable design of a hydro generator system dedicated to isolated communities" (PDF). Procedia CIRP. 27th CIRP Life Cycle Engineering Conference (LCE2020). 90: 251–255. doi:10.1016/j.procir.2020.02.004. ISSN 2212-8271.
  11. ^ Yaneva, Mariyana (12 October 2015). "HydroQuest connects river current turbine to French grid". Renewables Now. Retrieved 2 January 2024.
  12. ^ "OES Annual Report 2016". Ocean Energy Systems. Retrieved 17 November 2024.
  13. ^ Skopljak, Nadja (23 January 2024). "France's new lab for tidal turbine development opens its doors". Offshore Energy. Retrieved 17 November 2024.
  14. ^ "Verti-Lab". Verti-Lab. Retrieved 17 November 2024.
  15. ^ Stocks, Carriean (17 October 2018). "New turbine park for Rhône River, France". International Water Power. Retrieved 17 November 2024.
  16. ^ "France goes ahead with 2MW in-river tidal farm". Offshore Energy. 13 February 2017. Retrieved 17 November 2024.
  17. ^ Ajdin, Adis (5 May 2020). "HydroQuest marks OceanQuest milestone". Offshore Energy. Retrieved 2 January 2024.
  18. ^ "Leask Marine complete major offshore decommissioning project in France". Leask Marine. 22 December 2021. Retrieved 1 January 2024.
  19. ^ Tait, Carly (5 October 2021). "HydroQuest tidal turbine : End of tests on the EDF site in Paimpol Bréhat and new stages of development at the Raz Blanchard". TIGER: Tidal Stream Industry Energiser. Retrieved 1 January 2024.
  20. ^ Bescond, Stéphanie (10 October 2025). "Le site d'essais hydrolien de Paimpol-Bréhat passe officiellement sous la houlette de la Fondation Open-C" [The Paimpol-Bréhat tidal energy test site officially comes under the leadership of the Open-C Foundation]. Les Echos (in French). Retrieved 16 December 2025.
  21. ^ Gréau, Guillaume (October 2023). FloWatt 17.5 MW tidal energy pilot project in France. Ocean Energy Europe Annual Conference, The Hague, Netherlands.
  22. ^ "Windstaller Alliance to deliver FEED for tidal farm offshore France". Offshore. 3 July 2023. Retrieved 17 November 2024.
  23. ^ Akella, Surya (10 July 2023). "France approves €65m for FloWatt tidal energy project". Power Technology. Retrieved 2 January 2024.
  24. ^ Garanovic, Amir (29 September 2023). "HydroQuest launches crowdfunding campaign to support tidal energy activities". Offshore Energy. Retrieved 2 January 2024.
  25. ^ "FloWatt, the French Tidal Stream Farm Project, Has Been Selected by the European Commission Within the Innovation Fund Framework". Business Wire. 29 October 2024. Retrieved 17 November 2024.
  26. ^ Tisheva, Plamena (25 October 2024). "EU grants support to two tidal energy projects in France". Renewables Now. Retrieved 16 November 2024.
  27. ^ Lucot, Sébastien (26 March 2025). "Pour son projet de ferme pilote hydrolienne, Hydroquest a signé une commande de pales avec Loiretech" [Hydroquest has signed a contract with Loiretech for blades for its tidal turbine pilot farm project]. Le Marin (in French). Retrieved 16 December 2025.
  28. ^ "CMN Naval: le pionnier de l'innovation navale et de l'énergie marémotrice" [CMN Naval: pioneer in naval innovation and tidal energy]. Le Figaro (in French). 4 December 2023. Retrieved 16 December 2025.
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