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AltEnergy Investors

1350 Avenue of the Americas, 2nd FL, New York, New York 10019 US (1 more locations)

0 - 25 Employees


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Energy Investors


Our History

AltEnergy, LLC (AE) was founded by Russell Stidolph in 2006 when he left the private equity firm, J.H. Whitney & Co. At Whitney, Russ led some of the U.S. market’s first large scale, successful, alternative energy transactions. While at Whitney he led transactions and co-founded companies such as Hawkeye Renewables which grew into the third largest ethanol producer in the US, and Iowa Winds, which had developed one of the largest wind power portfolios in Iowa at the time. Since its inception AE has been a founding or lead investor – and active corporate development or management partner — in several significant alternative energy projects and businesses including Tres Amigas, Viridity Energy, Eos Energy Storage, Broadview Energy, Iowa Winds, and Anbaric Energy.


We are active energy investors and support portfolio assets with management, governance, industry relationships, and/or advice, as needed. We also serve outside organizations on a consulting basis.

Past Transactions

AE’s approach has led to consistent success over 15 years with numerous enterprises. Highlights include:

American Heartland Development Wind power developer
Anbaric Transmission Transmission developer
Blackridge Technology Cyber security software
Broadview Energy Wind power developer
Eos Energy Storage Advanced grid-scale battery technology
Hawkeye Renewables Ethanol producer
Iowa Winds Wind power developer
Tres Amigas Transmission developer
Viridity Energy Smart grid control software



Partnership Interests

New York City Office

1350 Avenue of the Americas, 2nd FL, New York, New York 10019 US

Connecticut Office

137 Rowayton Avenue, Rowayton, Connecticut 06853 US

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