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{{Main|Verdant Power}}
'''Verdant Power, Inc''' is a developer of tidal stream turbines, based in New York, USA. They have tested turbines in the [[East River]] since 2006. An array of six 35 kW turbines supplied power to two local businesses from May 2007 to October 2008.<ref name="nytimes20120912">{{Cite news |last=McGeehan |first=Patrick |date=2012-09-11 |title=In Quest for River's Power, an Underwater Test Spin |language=en-US |work=The New York Times |url=https://www.nytimes.com/2012/09/12/nyregion/in-quest-for-east-rivers-power-a-search-for-stouter-arms.html |url-status=live |url-access=subscription |access-date=2020-10-28 |archive-url=https://web.archive.org/web/20120912120623/https://www.nytimes.com/2012/09/12/nyregion/in-quest-for-east-rivers-power-a-search-for-stouter-arms.html |archive-date=2012-09-12 |issn=0362-4331}}</ref> An upgraded platform with three turbines was installed in October 2020.<ref name=":27">{{Cite web |date=2020-10-28 |title=3 Tidal Turbines Pop Into New York City's East River |url=https://cleantechnica.com/2020/10/28/3-tidal-turbines%E2%80%A9-pop-into-new-york-citys-east-river/ |access-date=2020-10-28 |website=[[CleanTechnica]] |language=en-US}}</ref>
=== Voith Hydro ===
'''Voith Hydro Ocean Current Technologies GmbH''' was a joint venture between [[Voith|Voith Hydro]] and [[RWE Innogy]] that developed tidal stream turbines, however Innogy sold their stake in November 2013.<ref>{{Cite web |date=2010-06-14 |title=Voith to install tidal turbine in Scotland |url=https://www.theengineer.co.uk/content/news/voith-to-install-tidal-turbine-in-scotland/ |access-date=2024-01-06 |website=The Engineer |language=en}}</ref><ref>{{Cite web |last=Carruthers |first=Quentin |date=2013-12-02 |title=Innogy exits Voith Hydro Ocean Current Technologies |url=https://globalventuring.com/corporate/innogy-exits-voith-hydro-ocean-current-technologies/ |access-date=2024-01-06 |website=Global Venturing}}</ref>
The 110 kW HyTide® 110-5.3 turbine was tested in southern [[South Korea]], near [[Jindo (island)|Jindo island]] in 2010, a 1/3rd scale prototype. This had a 5.33 m diameter rotor, 22 m² swept area. The turbine was designed to be simple, with a direct-drive generator (without gearbox) and no yaw or blade pitch adjustment. It also had no dynamic seals, thus the generator was cooled by seawater. The turbine was prototype certified by [[Germanischer Lloyd]].<ref>{{Cite conference |last=Arlitt |first=Raphael |last2=Argyriadis |first2=K |date=2010-10-06 |title=Development and Certification of the Voith Hydro HyTide® 110 Tidal turbine |url=https://www.ocean-energy-systems.org/documents/17094-icoe2010-r.arlitt.pdf/ |conference=3rd International Conference on Ocean Energy, 6 October, Bilbao}}</ref>
A full-scale 1 MW horizontal-axis turbine was then tested at EMEC between 2013 and 2015.<ref>{{Cite web |title=Tidal clients / Voith Hydro |url=https://www.emec.org.uk/about-us/our-tidal-clients/voith-hydro/ |access-date=2024-01-06 |website=EMEC: European Marine Energy Centre |language=}}</ref> The HyTide 1000 had a 13 m diameter rotor (133 m² swept area), and weighed around 200 tonnes. It was installed by ''SLA Offshore'' in September 2013, from the [[Dynamic positioning|DP II]] vessel ''MV Lone''.<ref>{{Cite web |last= |first= |date=2015-03-25 |title=VIDEO: Tidal turbine deployment process |url=https://www.offshore-energy.biz/video-tidal-turbine-deployment-process/ |access-date=2024-01-06 |website=Offshore Energy |language=}}</ref>
Voith also acquired the 250 kW [[Islay LIMPET]] [[wave power]] station in 2005.<ref>{{Cite news |date=2005-05-24 |title=Buyout saves wave power company |url=http://news.bbc.co.uk/2/hi/uk_news/scotland/4575583.stm |access-date=2024-01-06 |language=en-GB}}</ref>
=== Zhejiang University ===
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