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=== General Electric ===
In 2015, [[General Electric|GE]] acquired the energy assets from [[Alstom]] which included the business originally developed by [[Development of tidal stream generators#Tidal Generation Ltd|Tidal Generation Ltd]].<ref name=":39" />
In 2024, [[GE Vernova]] signed a [[Memorandum of understanding|MoU]] with [[Development of tidal stream generators#Proteus Marine Renewables|Proteus Marine Renewables]] to supply electrical systems for their tidal turbines.<ref name=":42">{{Cite news |date=4 November 2024 |title=GE Vernova signs tidal turbine MoU |url=https://renews.biz/96823/ge-vernova-signs-tidal-turbine-mou/ |access-date=2024-11-10 |work=ReNEWS.biz}}</ref>
=== HydroQuest ===
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In August 2024, PMR started building an AR1100 turbine to be deployed in the Naru Strait to power the [[Gotō Islands]] in Japan. This is an upgrade of the AR500 turbine with added pitch and yaw mechanisms, and uprated to 1.1 MW.<ref>{{Cite web |last=Maksumic |first=Zerina |date=2024-08-01 |title=Proteus Marine Renewables starts assembling upgraded tidal turbine in Japan (Gallery) |url=https://www.offshore-energy.biz/proteus-marine-renewables-starts-assembling-upgraded-tidal-turbine-in-japan-gallery/ |access-date=2024-10-12 |website=Offshore Energy |language=en-US}}</ref> The AR500 was previously tested in the Naru Strait from February 2021 to December 2023.<ref name=":15" /><ref name=":41" />
In November 2024, Proteus signed a [[Memorandum of understanding|MoU]] with [[SKF]] to supply the rotating equipment and [[GE Vernova]] to supply electrical systems for their tidal turbines.<ref name=":42" />
=== Pulse Tidal ===
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=== Sabella ===
[[File:Hydrolienne Sabella D10 (2).JPG|alt=Looking up at the Sabella D10 turbine from ground level. At the top of the image are 6 large blades around a bulbous hub, all painted bright blue. The cylindrical nacelle behind is supported on a pile with tubular steel bracing forming a tripod. The Nacelle and foundation are painted bright blue.|thumb|Sabella D10 turbine]]
{{Main|Sabella (company)}}'''Sabella SAS''' was a French [[Small and medium-sized enterprises|SME]] based in [[Quimper]], Brittany that has been developing tidal turbines since 2008, however the company was placed into receivership in October 2023.<ref>{{Cite web |title=Who we are? |url=https://www.sabella.bzh/en/home/ |access-date=2023-12-22 |website=Sabella |language=en-GB}}</ref><ref>{{Cite web |last=Garanovic |first=Amir |date=2023-10-23 |title=Sabella goes into receivership |url=https://www.offshore-energy.biz/sabella-placed-in-receivership/ |access-date=2023-12-22 |website=Offshore Energy |language=en-US}}</ref> The company had developed two main variants of their technology.
The '''D03''' was a 30 kW horizontal-axis turbine, with a six-bladed rotor 3 m in diameter, hence the name.<ref>{{Cite web |title=D03 |url=https://www.sabella.bzh/en/our-projects/d03/ |access-date=2023-12-22 |website=Sabella |language=en-GB}}</ref> It was tested in the [[Odet]] estuary in 2008, but not grid connected. The turbine weighed 7 tonnes, and sat on a gravity base in around 25 m deep water.
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