# Verdant Power

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{{Infobox company
| name = Verdant Power, Inc.
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| foundation = {{Start date and age|2000}}
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| location_city = [New York, NY](/source/New_York%2C_NY)
| location_country = USA
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| industry = Tidal Power Systems
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| homepage = {{URL|www.verdantpower.com}}
| footnotes = [http://www.insideview.com/directory/verdant-power-llc Company Profile by Insideview] <!-- data retrieved 16 February 2014 -->
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}}
'''Verdant Power, Inc''' is a maker and installer of [tidal power](/source/tidal_power) and [hydroelectric](/source/hydroelectric) systems. Their primary device is an underwater turbine, similar to a three-bladed [wind turbine](/source/wind_turbine), that is designed to capture energy from tidal currents and (precipitation-driven) river currents. The company uses the trade term "kinetic hydropower" to distinguish their systems from those (tidal and hydroelectric) based on [dam](/source/dam) construction. The company's first project, the Roosevelt Island Tidal Energy Project, is several turbines in [New York City](/source/New_York_City)'s [East River](/source/East_River).

==Location==
Verdant's home base is situated between [Manhattan](/source/Manhattan) and [Queens](/source/Queens) on [Roosevelt Island](/source/Roosevelt_Island) in the middle of the [East River](/source/East_River), a [tidal strait](/source/tidal_strait) running from [Long Island Sound](/source/Long_Island_Sound) to [Upper New York Bay](/source/Upper_New_York_Bay).<ref name=CBS20130807>[https://www.cbsnews.com/news/powering-the-future-underwater-turbines-harness-river-power/ Powering the Future Underwater turbines harness river power - CBS News] 7 August 2013</ref>

==RITE Project==
alt=A large crane on a barge, about to lift the triangular metal frame supporting 3 turbines|thumb|Installation of three Verdant Power 35kW turbines on a tri-frame base, on 22 October 2020
The '''Roosevelt Island Tidal Energy''' (RITE) Project, owned by Verdant Power, is the first tidal energy project to be issued a license from the [Federal Energy Regulatory Commission](/source/Federal_Energy_Regulatory_Commission) (FERC).<ref>{{Cite web |url=http://www.ferc.gov/media/news-releases/2012/2012-1/01-23-12.asp |title=FERC News Release FERC Issues First Pilot License for Tidal Power Project in New York |access-date=2014-02-19 |archive-date=2014-03-06 |archive-url=https://web.archive.org/web/20140306164054/http://www.ferc.gov/media/news-releases/2012/2012-1/01-23-12.asp |url-status=dead }}</ref> The project is located to the east of Roosevelt Island in the East River, with the southernmost turbine approximately {{Convert|100|m|ft}} north of the [Roosevelt Island Bridge](/source/Roosevelt_Island_Bridge).<ref>{{Cite conference |last=Li |first=Ye |last2=Colby |first2=Jonathan A |last3=Kelly |first3=Neil |last4=Thresher |first4=Robert |last5=Jonkman |first5=Bonnie |last6=Hughes |first6=Scott |date=June 6–11, 2010 |title=Inflow Measurement in a Tidal Strait for Deploying Tidal Current Turbines: Lessons, Opportunities and Challenges |conference=ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering, Shanghai, China |volume=3 |pages=569-576 |doi=10.1115/OMAE2010-20911 |via=ASME}}</ref>

The first of three phases of the project was prototype testing from 2002 until 2006 when the phase 2 demonstration began. The first two prototypes were installed in late 2006 and early in 2007, although these were not fully successful.<ref>{{Cite news |last=Shulman |first=Robin |date=September 20, 2008 |title=N.Y. Tests Turbines to Produce Power |work=[Washington Post](/source/Washington_Post) |url=https://www.washingtonpost.com/wp-dyn/content/article/2008/09/19/AR2008091903729.html |access-date=2023-12-30}}</ref>

In May 2007, six full-scale tidal turbines were installed on the river bed, in three rows approximately {{Convert|100|ft|m}} apart, five of which were fitted with a 35&nbsp;kW generator.<ref name=":1">{{Cite web |title=Roosevelt Island Tidal Energy Project, New York |url=https://www.power-technology.com/projects/roosevelt-island-tidal-energy-project-new-york/ |access-date=2023-12-30 |website=Power Technology |language=en-US}}</ref> This constituted the "world's first operation of a grid-connected tidal turbine array".<ref>{{Cite web |date= |title=The RITE Project |url=http://verdantpower.com/what-initiative/ |archive-url=https://web.archive.org/web/20140224004159/http://verdantpower.com/what-initiative/ |archive-date=2014-02-24 |access-date=2023-12-30 |website=Verdant Power}}</ref> They provided power for a [Gristedes](/source/Gristedes) supermarket and the adjacent Motorgate parking garage on Roosevelt Island.<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> This test concluded in October 2008, having generated around 50&nbsp;MWh of electricity.<ref name=":1" /> 

In February 2012 the federal government announced an agreement with Verdant Power to install 30 tidal turbines in the channel, then projected to begin operations in 2015 and produce 1.05&nbsp;MW of power.<ref>{{cite web|title=Turbines Off NYC East River Will Create Enough Energy to Power 9,500 Homes|url=http://energy.gov/articles/turbines-nyc-east-river-will-create-enough-energy-power-9500-homes |publisher=U.S. Department of Energy|access-date=13 February 2012}}</ref> There were problems with turbine blade degradation. A September 2012 test of a newly designed 16-feet diameter turbine was a success, and the company estimated it will take about 5 years to complete the array of 30 turbines in the river.<ref name=nytimes20120912 /> In August 2013, CBS News reported that Verdant planned to put "two more turbines in the river over the next year or two and build up from there".<ref name=CBS20130807 /> 

A "TriFrame" platform with three 70&nbsp;kW fifth generation (Gen5) turbines was installed in October 2020, providing power to [Con Edison](/source/Consolidated_Edison)'s local grid.<ref>{{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-pop-into-new-york-citys-east-river/ |access-date=2020-10-28 |website=[CleanTechnica](/source/CleanTechnica) |language=en-US}}</ref><ref>{{Cite web |last=Coleman |first=LeRoy |date=2022-06-06 |title=Marine Energy Innovation: Insights from Verdant Power |url=https://www.hydro.org/powerhouse/article/10-questions-with-verdant-power-about-marine-energy-innovation/ |access-date=2023-12-30 |website=National Hydropower Association |language=en-US}}</ref> After six months, one of the turbines was replaced with a new Gen5 turbine with thermoplastic blades developed by [NREL](/source/National_Renewable_Energy_Laboratory).<ref>{{Cite web |title=A Milestone for Tidal Energy: Verdant Power Successfully Retrieves a Test Turbine After Six Months of Continuous Operation in New York |url=https://www.energy.gov/eere/water/articles/milestone-tidal-energy-verdant-power-successfully-retrieves-test-turbine-after |access-date=2023-12-30 |website=Energy.gov |language=en}}</ref> [EMEC](/source/European_Marine_Energy_Centre) conducted an assessment of the turbines following the relevant [International Electrotechnical Commission](/source/International_Electrotechnical_Commission) standard, "62600-200: Electricity producing tidal energy converters – power performance assessment".<ref>{{Cite web |date=11 May 2021 |title=A world’s first for EMEC and Verdant Power |url=https://www.waterpowermagazine.com/news/newsa-worlds-first-for-emec-and-verdant-power-8736127 |access-date=2023-12-30 |website=International Water Power}}</ref>

== Morlais project ==
In a joint venture between with Duggan Energy, named Verdant Isles, there are plans to deploy grid-connected turbines at the [Morlais](/source/Morlais) site in northwest Wales. Verdant Isles was awarded a [Contracts for Difference](/source/Contracts_for_Difference_(UK_electricity_market_support)) in September 2023 to supply electricity to the GB grid, which will form phase one of the project, with 4.9&nbsp;MW to be commissioned by 2027/28.<ref>{{Cite conference |last=Smith |first=Glenn |date=25 October 2023 |title=Tidal showcase – the path to pilot farms. Verdant Isles – Morlais Project |url=https://www.oceanenergy-europe.eu/annual-event/oee2023/ |conference=Ocean Energy Europe, The Hauge}}</ref><ref name=":0">{{Cite web |title=Contracts for Difference (CfD) Allocation Round 5: results |url=https://www.gov.uk/government/publications/contracts-for-difference-cfd-allocation-round-5-results |access-date=2023-11-26 |website=GOV.UK |language=en}}</ref>

==References==
{{reflist}}

==External links==
*[http://verdantpower.com/ Company website]

Category:Hydroelectricity in the United States
Category:Renewable energy technology companies
Category:Technology companies of the United States
Category:Tidal power
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Category:Tidal power in Wales

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Adapted from the Wikipedia article [Verdant Power](https://en.wikipedia.org/wiki/Verdant_Power) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Verdant_Power?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.