HydroQuest

HydroQuest is a French marine and hydrokinetic-energy company based in Meylan, near Grenoble. Founded in 2010, it develops vertical-axis turbines designed to convert the kinetic energy of flowing rivers and tidal currents into electricity without requiring a conventional dam. Its technology is based on counter-rotating vertical rotors that draw on Darrieus- and Achard-style turbine concepts. The company initially concentrated on river-current applications, including small installations intended to provide decentralized electricity in locations with limited access to conventional grids. It later extended the platform to larger tidal-stream systems. One of HydroQuest's early field projects was installed in 2013 in the Oyapock River in French Guiana. The turbine supplied electricity to Camopi, a village of about 200 inhabitants that had previously depended on a diesel generator. In mainland France, the company tested a 40 kW HydroQuest 1.40 turbine in the Loire at Orléans in late 2014. The installation was connected to the French electricity grid in September 2015 and was reported in 2016 as the country's only operational grid-connected fluvial hydrokinetic turbine. HydroQuest expanded into tidal-stream technology in 2016. Its tidal design uses pairs of vertical-axis rotors mounted on parallel shafts, with each rotor carrying three blades. The upper and lower rotors are offset relative to one another to reduce mechanical loading, while the relatively low rotational speed—reported at approximately 10 to 15 revolutions per minute—is intended to limit risks to marine wildlife. The company has progressively simplified and redesigned the device, including removing lateral ducts from the generation used for the FloWatt project in order to reduce mass, structural loads, and cost. The company has worked with industrial, research, and energy-sector partners. Its collaboration with the French marine research institute IFREMER dates from 2015. HydroQuest has also worked with Constructions Mécaniques de Normandie, or CMN, on turbine construction, and with Qair on the FloWatt tidal farm. In 2018, HydroQuest and the Hydrowatt Group installed four grid-connected river turbines in the Rhône near Lyon. The four units had a combined rated capacity of 320 kW and were inaugurated in December of that year. HydroQuest's larger tidal technology was tested at the Paimpol–Bréhat tidal demonstration site off Brittany from 2019 to 2021. The approximately 1 MW OceanQuest device used four vertical-axis turbines mounted in pairs on two shafts and was built by CMN in Cherbourg. The turbine's power curve was certified by Bureau Veritas under the relevant IEC technical specification for marine-energy performance assessment. The company's principal development program is FloWatt, a proposed tidal-stream farm at Raz Blanchard in Normandy. Developed with CMN and Qair, the pilot farm is planned to use six turbines rated at 2.8 MW each, for a total capacity of 17 MW. The units are expected to be manufactured at the CMN shipyard in Cherbourg and installed roughly three kilometres offshore in water about 30 metres deep. The project has received French public support and European Innovation Fund backing, while HydroQuest has also used crowdfunding to seek additional project finance. Commissioning is currently expected in 2028, subject to construction, deployment, and grid-connection progress. HydroQuest remains focused on commercializing predictable marine renewable generation while retaining river-current systems as part of its technology base. In 2024, it joined the Ocean Energy Europe board as a lead partner and launched the VERTI-Lab research initiative with IFREMER to develop analytical tools for vertical-axis tidal turbines. The company is led by Thomas Jaquier and operates as a subsidiary within the CMN Naval group.

HydroQuest was established in Grenoble in 2010 to develop vertical-axis turbines capable of producing electricity from river and tidal currents. Rather than relying on dams or large civil-works projects, the company pursued hydrokinetic devices that could be placed directly in moving water. Its design philosophy combined vertical-axis turbine concepts associated with Darrieus and Achard machines with a counter-rotating rotor arrangement intended to improve energy capture and manage structural loads. The company's early work focused on rivers. In 2013, HydroQuest installed a turbine in the Oyapock River in French Guiana. The project supplied electricity to Camopi, a village whose previous generation depended on diesel fuel. This installation demonstrated the potential of small hydrokinetic systems for remote communities, where transporting fuel and building conventional infrastructure can be difficult. HydroQuest subsequently tested its technology in mainland France. A 40 kW HydroQuest 1.40 turbine was placed in the Loire at Orléans in late 2014. It was connected to the French grid in September 2015 and had accumulated approximately two years of operation by 2016. The installation was described at that time as France's only operational grid-connected fluvial hydrokinetic turbine. The experience gave HydroQuest practical data on installation, operation, maintenance, and grid integration in an inland-waterway environment. The company began extending its technology to tidal currents in 2016. Its marine system uses two pairs of vertical-axis turbines arranged on two parallel shafts. Each rotor has three blades, and the upper rotor is rotated relative to the lower rotor to reduce fluctuating loads. The rotors are designed to turn relatively slowly, at about 10 to 15 revolutions per minute, a feature intended to reduce potential interactions with marine wildlife. Over successive generations, HydroQuest redesigned the blades and removed lateral ducts from the FloWatt configuration to lower weight, loads, and manufacturing cost. HydroQuest developed a research relationship with IFREMER beginning in 2015. This cooperation later produced VERTI-Lab, launched in January 2024 as an initiative focused on analytical and engineering tools for vertical-axis tidal turbines. The company also partnered with industrial manufacturers and project developers, notably CMN in Cherbourg and Qair. In 2018, HydroQuest and the Hydrowatt Group deployed four grid-connected turbines in the Rhône upstream of the Pont Raymond Poincaré near Lyon's Parc de la Feyssine. Each turbine was rated at 80 kW, giving the installation a total rated capacity of 320 kW. The farm was designed to produce about 1 GWh annually, broadly comparable to the average electricity use of several hundred households, and it was inaugurated on 21 December 2018. A separate proposed 2 MW Rhône installation downstream of the Génissiat Dam received approval from ADEME in 2017, but the planned project does not appear to have progressed to construction. HydroQuest's move into larger marine devices was demonstrated at the Paimpol–Bréhat tidal test site in Brittany. An approximately 1 MW OceanQuest turbine operated there from April 2019 through December 2021. CMN built the device in Cherbourg. It consisted of four three-bladed vertical-axis turbines mounted in pairs on two shafts, carried by a large frame on a tripod foundation. Bureau Veritas certified its power curve against IEC TS-62600-200, providing an independent assessment of performance. The next stage has been FloWatt, a planned tidal-stream farm at Raz Blanchard in Normandy. HydroQuest is developing the project with CMN and Qair. The pilot farm is designed to contain six 2.8 MW units, producing a combined 17 MW. Each turbine is planned to be approximately 21 metres high and 26 metres wide, with paired three-bladed rotors positioned around a central structure. The Windstaller Alliance was selected to conduct front-end engineering design for the subsea electrical systems. French public support includes €65 million and dedicated revenue support, while the project also sought €1.5 million through a crowdfunding campaign launched in 2023. In 2024, HydroQuest and Normandie Hydroliennes received combined European Innovation Fund support for proposed Raz Blanchard capacity. Loiretech was selected in 2025 to manufacture 72 composite blades for the pilot farm. HydroQuest is headquartered in Meylan's Inovallée technology park and is part of CMN Naval, the wider group associated with the Cherbourg-based shipbuilder Constructions Mécaniques de Normandie. The company continues to develop river and tidal applications, with FloWatt expected to be commissioned in 2028 if construction, offshore installation, and grid connection proceed as planned.

1. 2025FloWatt blade manufacturing agreement

   HydroQuest contracted Loiretech to manufacture 72 composite blades for the FloWatt pilot farm.

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2. 2024VERTI-Lab launched with IFREMER

   HydroQuest and IFREMER launched a laboratory initiative focused on vertical-axis tidal-turbine analysis.

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3. 2024Ocean Energy Europe board appointment

   HydroQuest joined the Ocean Energy Europe board of directors as a lead partner.

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4. 2023FloWatt crowdfunding campaign

   HydroQuest launched a crowdfunding campaign seeking additional financing for the FloWatt tidal-stream project.

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5. 2021OceanQuest testing concludes

   The OceanQuest demonstration period at Paimpol–Bréhat ended in December after testing that began in 2019.

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6. 2019OceanQuest begins tidal testing

   The approximately 1 MW OceanQuest tidal turbine began testing at Paimpol–Bréhat in Brittany.

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7. 2018Rhône river turbine farm inaugurated

   Four 80 kW turbines near Lyon were inaugurated, providing 320 kW of combined rated capacity.

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8. 2016Expansion into tidal-stream technology

   HydroQuest expanded its development work from river-current turbines to larger tidal-stream systems.

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9. 2015Loire turbine connected to the French grid

   The 40 kW HydroQuest 1.40 installation at Orléans was connected to the electricity grid in September.

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10. 2013Oyapock River installation in French Guiana

    A HydroQuest turbine was installed in the Oyapock River to supply electricity to Camopi, a remote community previously dependent on diesel generation.

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11. 2010HydroQuest founded in Grenoble

    HydroQuest was established to develop vertical-axis turbines for river and tidal-current electricity generation.

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12. Expected FloWatt commissioning

    The six-unit, 17 MW FloWatt pilot farm is expected to enter service, subject to construction, offshore installation, and grid connection.

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HydroQuest positions itself as a specialist in low-speed, vertical-axis hydrokinetic turbines for predictable river and tidal electricity generation. Its differentiation rests on counter-rotating rotors, compact deployment concepts, reduced rotational speed, and adaptation to both inland waterways and high-energy marine currents.

• HydroQuest 1.40River-current turbine2014

  A 40 kW river-current turbine tested in the Loire at Orléans. The installation was connected to the French electricity grid in September 2015 and provided an early demonstration of HydroQuest's vertical-axis hydrokinetic technology in a mainland French river.

• OceanQuestTidal-stream turbine2019

  An approximately 1 MW tidal-stream device tested at the Paimpol–Bréhat site from 2019 to 2021. It used four three-bladed vertical-axis rotors arranged in pairs on two shafts, supported by a tripod-mounted frame. Its power curve was certified by Bureau Veritas against IEC TS-62600-200.

• FloWattTidal-stream farm

  A planned six-turbine tidal-stream pilot farm at Raz Blanchard in Normandy. Each unit is designed for 2.8 MW, giving the farm a planned total capacity of 17 MW. The turbines are being developed with CMN and Qair and are expected to be manufactured in Cherbourg.

• 2023FloWatt crowdfunding campaign

  France

  HydroQuest sought public participation in financing the FloWatt tidal-stream project through a crowdfunding campaign targeting €1.5 million.

  Outcome. The available reference material does not state the final amount raised or the campaign's completion result.

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• 2024Deepening research and sector partnershipsStrategy

  Vertical-axis tidal turbines require specialized modeling and performance-analysis methods.

  What changed. HydroQuest launched VERTI-Lab with IFREMER and joined the Ocean Energy Europe board as a lead partner.

  Aftermath. These initiatives strengthened HydroQuest's research and industry role in European marine renewable energy.

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• 2023Additional public financing for FloWattStrategy

  The FloWatt pilot farm required additional capital alongside public support and project revenues.

  What changed. HydroQuest launched a crowdfunding campaign seeking €1.5 million.

  Aftermath. The available reference material does not specify the campaign's final financial result.

  Crowdfunding target. €1.5 million target (2023)

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• 2018Deployment of the Rhône turbine farmProduct launch

  HydroQuest and the Hydrowatt Group pursued a grid-connected river installation to demonstrate multiple turbines operating together in a major French waterway.

  What changed. Four 80 kW turbines were installed near Lyon, creating a 320 kW farm that was inaugurated in December 2018.

  Aftermath. The project became one of HydroQuest's principal French river-current demonstrations.

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• 2016Expansion from river currents into tidal streamsStrategy

  After developing and testing river-current turbines, HydroQuest sought to apply its vertical-axis technology to stronger and more predictable marine tidal currents.

  What changed. The company began developing larger tidal-stream turbine configurations, eventually leading to the OceanQuest demonstration and the FloWatt project.

  Aftermath. The strategic expansion established tidal energy as a central part of HydroQuest's development pipeline.

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• 2025HydroQuest signs a composite-blade manufacturing contract for FloWatt

  HydroQuest signed an agreement with Loiretech for the manufacture of 72 composite blades intended for the FloWatt pilot farm.

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• 2024HydroQuest and IFREMER launch the VERTI-Lab initiative

  HydroQuest and IFREMER launched VERTI-Lab to develop analysis tools supporting vertical-axis tidal-stream turbine development.

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• 2024HydroQuest joins the Ocean Energy Europe board

  HydroQuest joined the Ocean Energy Europe board of directors as a lead partner, increasing its participation in the European marine-energy sector.

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• 2024European Innovation Fund support announced for Raz Blanchard tidal projects

  HydroQuest and Normandie Hydroliennes were awarded a combined €51 million from the European Union Innovation Fund for projects intended to develop 29 MW of tidal-stream capacity at Raz Blanchard.

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1. HydroQuest
2. HydroQuest official website