Ridgewood Infrastructure
Private equityNew York · Growth · 27 people tracked
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Investment thesis
Ridgewood Infrastructure focuses on essential infrastructure in the U.S. lower middle market, targeting businesses that deliver critical services to the people they serve. The firm applies a proven investment strategy and draws on differentiated knowledge, expertise, and relationships to create value for its investors and stakeholders. It positions itself as a partner of choice for U.S. cities, industry-leading companies, and management teams, and emphasizes values-aligned investing as a driver of value creation.
Source: firm website, verified Sep 29, 2026.
Team · 27 people
from the firm's website & public directoriesWhat they invest in
from 7 of 17 portfolio companiesLogistics & Supply Chain ×4Energy ×3Cleantech ×2Climate Tech ×2Hardware ×1Impact & Social Good ×1Mobility & Transportation ×1
HQs:United States×6
Investments · 17 tracked
founders shown can be your intro pathCarolina Marine Terminal is a marine bulk cargo terminal that handles dry bulk goods such as aggregate rock, fertilizers, salt, crude iron, and chrome, and offers customized storage and handling for marine cargo.
Logistics & Supply Chain
APP Jet Center operates fixed-base operations (FBOs) at business-aviation airports across the United States, offering hangar space, fueling programs, pilot lounges, meeting facilities and concierge services to private and business aircraft operators.
Logistics & Supply ChainMobility & TransportationStuart, US
Eric Hietala(Chief Operating Officer)inSharyar Aziz(Chief Financial Officer)in
Co-investorsBain Capital
Dauntless Air is an aerial firefighting company that operates a fleet of Fire Boss aircraft to suppress wildfires quickly before they spread.
Climate TechHardwareImpact & Social Good
MN8 Energy develops and operates clean energy infrastructure — including solar, battery storage, and EV charging assets — for enterprise, government, education, and utility customers across the United States.
CleantechClimate TechEnergy
Nassau Marine Terminal operates the Port of Fernandina on Amelia Island in Fernandina Beach, Florida, offering port operations along with warehousing and transportation for breakbulk, container, and heavy lift/specialty cargo.
Logistics & Supply ChainFernandina Beach, US
SiEnergy is a natural gas utility that has provided residential, community, and industrial customers with natural gas distribution services since 1998.
Energy
Sierra Railroad is a California-based rail company operating freight, intermodal, and passenger rail services, and it develops waste-to-energy gasification technology.
CleantechEnergyLogistics & Supply Chain
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Balderton eFrontCloudEcosaveEnvironmental Infrastructure PartnersNeptune Transmission LineProspect Lake Clean Water CenterThe Dupuy GroupUndineValley ColdVista RidgeWaste Resource Management (WRM)
Portfolio news
latest coverage across their companiesDauntless Air · prnewswire.com · Jun 10, 2026
Sierra Railroad · finance.yahoo.com · Mar 11, 2026
Frequently asked questions
- How many investments has Ridgewood Infrastructure made?
- Ridgewood Infrastructure has 17 tracked investments.
- What stage does Ridgewood Infrastructure invest at?
- Ridgewood Infrastructure invests at the Growth stage.
- What is Ridgewood Infrastructure's typical check size?
- Ridgewood Infrastructure typically writes checks of $50M – $150M.
- What sectors does Ridgewood Infrastructure focus on?
- Ridgewood Infrastructure focuses on Cleantech, Climate Tech, Cybersecurity, Data & Infrastructure, Energy, Mobility & Transportation, New Materials.
- Where is Ridgewood Infrastructure located?
- Ridgewood Infrastructure is headquartered in New York, US.
- Who does Ridgewood Infrastructure co-invest with?
- Ridgewood Infrastructure most often shares deals with Artesian, Balderton Capital, FirstMark Capital, among 9 tracked co-investors.
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