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Keystone Tower Systems
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Manufacturer of utility scale wind turbine towers

Founded in 2010
Founded in

Company type Private Public ()
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Industry Group energy & power

Sector wind

TRL Range 4-6
TRL 1 Basic research
TRL 2 Technology formulation
TRL 3 Applied research
TRL 4 Small scale prototype
TRL 5 Large scale prototype
TRL 6 Prototype system
TRL 7 Demonstration system
TRL 8 First of a kind commercial system
TRL 9 Full commercial application
TRL Range

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Headquarters Westminster, CO Westminster, United States
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Updated by Eric Smith at Keystone Tower Systems on 07/21/2015

Edited by Cleantech Group on 09/14/2021

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Date Company
07/01/2015

Undisclosed Undisclosed

Keystone is working with several top tier turbine manufacturers to integrate spiral welded towers into their turbines - primarily in the 3MW class, 140m tall segment

Confirmed by Undisclosed
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NREL NREL
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Date Investors Type Amount
10/30/2017 Finindus Finindus , Colorado Impact Fund Colorado Impact Fund , Zoma Capital Zoma Capital (3)
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This investment was confirmed via correspondence with investors in the round.
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Growth Equity
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First spiral welded tower

First tower installed May 7th, 2015

 Pilot/Early Revenue Products - Wholesale
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