Ridgewood Infrastructure
Ridgewood Infrastructure is a New York-based private investment firm (part of Ridgewood Companies) that invests $50-150 million of equity per transaction in essential U.S. lower middle market infrastructure assets, including water, power, transportation, and emergency-response businesses, serving municipal, government, and industrial customers.
- Company typePrivate
- Founded1982
- HeadquartersNew York, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Ridgewood Infrastructure does
Ridgewood Infrastructure is the infrastructure investing arm of Ridgewood Companies (founded 1982) and operates as a New York-based private investment firm focused on essential infrastructure assets in the U.S. lower middle market. The firm typically invests $50-150 million of equity per transaction and pursues controlling or meaningful minority stakes across five core sectors: Water and Utilities, Power and Renewables, Transportation, Communications, and increasingly emergency-response infrastructure. Within Ridgewood Companies, which manages approximately $5 billion of total capital and commitments, the firm has closed Water & Strategic Infrastructure Fund II at $1.2 billion.
The platform comprises 20+ portfolio companies with underlying physical infrastructure assets including water and wastewater utilities (Undine, Prospect Lake Clean Water Center, Vista Ridge — realized October 2024), solar and battery storage (MN8 Energy, 3GW+ across 25+ states), shortline rail with hydrogen locomotive technology (Sierra Railroad, Railpower Inc.), aerial firefighting (Dauntless Air), marine terminals (Nassau, Carolina), cold-chain logistics (Valley Cold Storage), industrial wastewater management (Waste Resource Management), and energy efficiency services (Ecosave, Environmental Infrastructure Partners). Several assets generate revenue under 30-year contracted frameworks with municipal and government counterparties.
The firm employs an active stewardship model, partnering with incumbent management teams to drive operational improvements, capacity expansion, and add-on acquisitions. Distribution and origination rely on direct relationships with U.S. municipalities, industry-leading operators, and management teams, supported by senior advisors with operating experience across utilities, EPC, environmental services, and transportation. Recent exits include APP Jet Center (sold to Bain Capital in March 2026 after a four-year hold), SíEnergy (January 2025), and Vista Ridge (October 2024).
Ridgewood Infrastructure firmographics
Firmographics- Name
- Ridgewood Infrastructure
- Legal name
- Ridgewood Infrastructure, LLC
- Website
- https://ridgewoodinfrastructure.com
- Company type
- Private
- Founded year
- 1982
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Ridgewood Infrastructure is a New York-based private investment firm (part of Ridgewood Companies) that invests $50-150 million of equity per transaction in essential U.S. lower middle market infrastructure assets, including water, power, transportation, and emergency-response businesses, serving municipal, government, and industrial customers.
- Ownership category
- akta.pro rank
Ridgewood Infrastructure industry classification
Industry- Product category
- Infrastructure Private Equity Investment
- akta.pro primary industry
- Telecom, Networking & Infrastructure Growth Equity (FSANACAJ)
Keywords
Where Ridgewood Infrastructure is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Ridgewood Infrastructure business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Infrastructure Investment Management: Ridgewood Infrastructure generates returns through equity investments in essential infrastructure businesses, creating value through operational improvements and strategic growth initiatives. The firm is part of the Ridgewood Companies, which manages approximately $5 billion of total capital and commitments. Returns are realized through portfolio company exits via sales to strategic buyers or financial sponsors.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Infrastructure Investment Services |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Ridgewood Infrastructure product offering
Product offeringCore offering
Ridgewood Infrastructure is a private investment firm that makes controlling or meaningful minority equity investments (typically $50-150 million) in essential infrastructure businesses in the U.S. lower middle market. The firm invests across Water, Utilities, Power & Renewables, Transportation, and Communications sectors, taking active management roles and partnering with portfolio company management teams to drive operational improvements and growth. It is part of the Ridgewood Companies, which manages approximately $5 billion in total capital and commitments.
Product overview
Ridgewood Infrastructure is a U.S. lower middle market infrastructure investment firm and part of the Ridgewood Companies (founded 1982). The firm operates as a single unified investment platform offering equity investments typically ranging from $50-$150 million in essential infrastructure sectors including Water, Utilities, Power & Renewables, Transportation, and Communications. The portfolio consists of acquired companies and realized/unrealized investments including Sierra Railroad (shortline rail with hydrogen locomotive technology), Dauntless Air (aerial firefighting), MN8 Energy (solar/battery storage), Valley Cold Storage, Undine (water utilities), Ecosave (energy efficiency), Waste Resource Management, Prospect Lake Clean Water Center, marine terminals (Nassau and Carolina), The Dupuy Group, and previously realized investments Vista Ridge, SíEnergy, and Neptune Transmission Line. The firm takes an active management approach, partnering with portfolio company management teams to implement operational improvements and strategic growth initiatives.
Differentiator
Problem solved
Functional benefit
Products and services
- Water & Strategic Infrastructure Fund II Infrastructure private equity fund with $1.2 billion in commitments, focused on water and strategic infrastructure investments in the U.S. lower middle market. Available to institutional limited partners for capital commitment.
- Sierra Railroad Company California-based shortline rail platform providing freight rail, switching, storage, and transloading services to diversified customers across industrial, agricultural, and energy supply chains. Includes subsidiary Sierra Northern Railway and Railpower, Inc., which operates the only FRA-approved hydrogen-powered locomotive in the U.S.
- Dauntless Air Aerial firefighting company operating North America's largest fleet of Fire Boss aircraft (Single Engine Scoopers) for wildfire suppression services under long-term government contracts.
- MN8 Energy Independent solar energy producer owning and operating more than 3GW of renewable energy generating capacity across 800+ projects in 25+ states, plus 250MW of battery storage projects.
- Valley Cold Storage & Transportation Purpose-built refrigerated warehouse system providing short and long-term cold storage services and management.
- Undine Consolidates smaller-scale regulated water and wastewater utilities in key U.S. regional markets.
- Environmental Infrastructure Partners Owns sustainable water, energy efficiency, transportation, communications, and other infrastructure throughout the United States.
- Ecosave Energy efficiency infrastructure company focused on the large, fragmented, and fast-growing U.S. commercial and industrial market.
- Waste Resource Management (WRM) Mission-critical provider of liquids and wastewater collection, treatment, and disposal serving the commercial and industrial market.
- Prospect Lake Clean Water Center Water treatment plant supplying the majority of fresh water for the City of Fort Lauderdale, FL under a 30-year availability-based contract.
- Nassau Marine Terminal Multi-modal terminal with break bulk, container, and heavy lift/specialty cargo capabilities at Port of Fernandina, Florida.
- Carolina Marine Terminal Multi-modal marine dry good bulk port facility in Wilmington, North Carolina.
- The Dupuy Group Infrastructure investment in emergency response and preparedness sector.
Quantifiable outcome
- Vista Ridge pipeline supplies approximately 20% of fresh water for City of San Antonio under 30-year contract
- +2 more outcomes
Companies that use Ridgewood Infrastructure
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles2 records
Ridgewood Infrastructure technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Ridgewood Infrastructure partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered portfolio company, advisory and talent/advisory.
- Waste Resource Management (WRM)portfolio companyWRM is a portfolio company of Ridgewood Infrastructure. Ridgewood played an instrumental role in executing WRM's acquisition of the majority of Darling Ingredients' trap grease business, supporting the transaction and creating opportunities for organic and inorganic growth.
- King & SpaldingadvisoryLegal advisor to Ridgewood Infrastructure for the Sierra Railroad Company acquisition transaction.
- Embry-Riddle Aeronautical Universitytalent/advisoryJoe Gibney, former Senior Advisor at Ridgewood Infrastructure, was appointed as Dean of the David B. O'Maley College of Business at Embry-Riddle, connecting Ridgewood talent with academic institution.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
Ridgewood Infrastructure competitors and assessment
Company assessmentDirect peers
- Stonepeak Infrastructure Partners: U.S.-focused mid-market infrastructure equity investor with comparable fund sizes (~$14B Fund IV) and a similar sector mix in transportation, water, and energy. Most directly comparable by strategy, ticket size, and target geography.
- I Squared Capital: Independent global infrastructure investor focused on mid-market essential infrastructure with similar equity check sizes ($50-500M) and exposure to water, utilities, and transport. Closely comparable on mandate and target company profile.
- Brookfield Infrastructure: One of the world's largest infrastructure investors with significant exposure to U.S. water, utility, transport, and renewable assets. Overlaps with Ridgewood in essential infrastructure but typically deploys at larger scale.
- EQT Infrastructure: European-headquartered infrastructure fund with growing U.S. mid-market activity in water, energy, and transport. Comparable on long-duration contracted infrastructure investing approach.
- ArcLight Capital Partners: U.S. mid-market infrastructure and energy-focused private equity firm investing in regulated and contracted infrastructure. Highly comparable on target company profile and ticket size.
- Antin Infrastructure Partners: European-listed mid-market infrastructure specialist with comparable fund sizes and focus on essential infrastructure including water, energy, and transport. Similar mid-market thesis but with European geographic tilt.
- Basalt Infrastructure Partners: Mid-market infrastructure equity and debt investor focused on essential services in North America and Europe. Comparable on mid-market ticket sizes and essential infrastructure mandate.
Broad incumbents
- Macquarie Asset Management (MIRA): World's largest infrastructure asset manager with broad exposure across the risk-return spectrum. Comparable on core strategy of essential infrastructure investing but operates at vastly greater scale.
- Blackstone Infrastructure Partners: Mega-fund with growing infrastructure platform, increasingly moving into mid-market essential infrastructure. Comparable sectors but larger scale and broader mandate than Ridgewood.
- Global Infrastructure Partners (GIP): Major infrastructure fund manager (now part of BlackRock) with comparable essential infrastructure focus. Operates at materially larger scale but similar sector focus including water, energy, and transport.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Ridgewood Infrastructure social profiles
Digital presenceRidgewood Infrastructure compliance and trust
Trust signalCompliance1 record
Ridgewood Infrastructure financial estimates
Financial estimateRevenue estimate
Valuation estimate
Ridgewood Infrastructure leadership team
Management profileNumber of profiles
Profiles9 records
Ridgewood Infrastructure subsidiaries and ownership
Company hierarchySubsidiaries2 records
Ridgewood Infrastructure funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Ridgewood Infrastructure M&A and investment
M&A and investmentM&A5 records
Investments1 record
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Ridgewood Infrastructure
What does Ridgewood Infrastructure do?
Ridgewood Infrastructure is a private investment firm that makes controlling or meaningful minority equity investments (typically $50-150 million) in essential infrastructure businesses in the U.S. lower middle market. The firm invests across Water, Utilities, Power & Renewables, Transportation, and Communications sectors, taking active management roles and partnering with portfolio company management teams to drive operational improvements and growth. It is part of the Ridgewood Companies, which manages approximately $5 billion in total capital and commitments.
Is Ridgewood Infrastructure a public or private company?
Ridgewood Infrastructure is a private company. It is classified as private equity controlled and is currently operating.
When was Ridgewood Infrastructure founded?
Ridgewood Infrastructure was founded in 1982. It employs 11 to 50 people.
Where is Ridgewood Infrastructure based?
Ridgewood Infrastructure is headquartered in New York, United States, in the North America region.
How does Ridgewood Infrastructure make money?
One revenue line is on record: infrastructure Investment Management.
Who are Ridgewood Infrastructure's main competitors?
Direct peers on record are Stonepeak Infrastructure Partners, I Squared Capital, Brookfield Infrastructure, EQT Infrastructure, ArcLight Capital Partners, Antin Infrastructure Partners and Basalt Infrastructure Partners. Broad incumbents are Macquarie Asset Management (MIRA), Blackstone Infrastructure Partners and Global Infrastructure Partners (GIP).
Does Ridgewood Infrastructure have an API?
No public API is recorded for Ridgewood Infrastructure.
What industry is Ridgewood Infrastructure in?
Ridgewood Infrastructure's product category is Infrastructure Private Equity Investment. Its primary akta.pro industry code is FSANACAJ, Telecom, Networking & Infrastructure Growth Equity.