Greene Street Capital

What Greene Street Capital does

Greene Street Capital is a privately-held private equity and venture capital firm headquartered at 425 Madison Avenue, New York. Founded in 2013 by Ari Bernstein, the firm operates with a 1–10 employee team structured around a dual mandate: generating investment alpha while directing capital toward companies that "make the world a better place." The firm's strategy emphasizes supply chain integration and the creation of lasting value through sustainable competitive advantage at portfolio companies, with a risk-mitigating approach at the nexus of income, principal protection, and diversification. A defining structural feature is that the firm will only deploy investor capital into deals when Greene Street Capital itself is also a substantial co-investor, designed to align incentives across LPs and GPs.

The firm's portfolio is concentrated in the energy sector. Its two named portfolio companies are Glenrock Energy, an upstream oil producer co-founded in 2016 that owns and operates 40,000+ acres of mineral leaseholds in Wyoming's Powder River Basin with a mission of reducing greenhouse gas emissions through carbon capture; and Glenrock Petroleum, an oil & gas production company managed internally by Energy Portfolio Manager Terry Manning. Glenrock Energy has pursued a regulatory-led thesis, contributing to Wyoming's FUTURE Act (Feb 2018) and engaging PacifiCorp (Jul 2018) on CCUS feasibility at the Dave Johnston coal-fired power plant in Converse County, Wyoming. The firm does not disclose fund size, AUM, or revenue, and there is no evidence of a formal fund vehicle structure in the source material.

Revenue mechanics are typical of small alternative asset managers — management fees on committed/invested capital plus carried interest on realization events — though neither AUM nor realized performance is publicly disclosed. The business is founder-controlled, with equity concentrated among the founding team (Ari Bernstein; Partner Todd E. Benson, former co-founder and Global Co-Head of Citi Private Equity with $11B AUM track record; Terry Manning; Associate Neli Gertner). Customer-facing activity is limited to direct investment origination with management teams of portfolio companies; there is no external product distribution and no marketing beyond a mission-focused company website. Geographic footprint is domestic (United States), with no disclosed international operating geographies.

Name

Greene Street Capital

Legal name

Greene Street Capital

Website

https://greenestreetcapital.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

1–10 employees

Short description

Greene Street Capital is a New York-based private equity and venture capital firm founded in 2013 that invests in portfolio companies it deems to make the world a better place, concentrating on energy (upstream oil production and carbon capture via Glenrock Energy and Glenrock Petroleum) through supply chain integration and aligned co-investment.

Ownership category

akta.pro rank

Product category

Private Equity & Venture Capital

NAICS

Portfolio Management and Investment Advice (52394)

SIC

Investment Advice (6282)

akta.pro primary industry

Sustainable Private Markets (Impact PE/VC, Private Credit, Infrastructure) (FSAAALAG)

akta.pro secondary industry

Technology & Software Growth Equity (FSANACAA)

Keywords

• Private equity investing
• Venture capital management
• Impact investing
• Portfolio management
• Supply chain integration

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Investment Management: Private equity and venture capital investment management generating returns through portfolio company growth, exits, and distributions. Revenue derived from management fees and carried interest on investment returns.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Greene Street Capital is a private equity and venture capital firm that provides growth capital, strategic, and analytic resources to portfolio companies. The firm invests in "Value + Values" opportunities — companies with sustainable competitive advantages that also make the world a better place — and helps accelerate their growth through supply chain integration. The firm co-invests its own capital alongside investor capital to ensure aligned incentives.

Product overview

Greene Street Capital is a private equity and venture capital firm that offers investment management services focused on 'Value + Values' opportunities — investments with deep margin of safety that benefit the world and their communities. Their core investment strategy involves helping portfolio companies accelerate growth through supply chain integration and sustainable competitive advantage creation. Their primary portfolio companies include Glenrock Energy (upstream oil producer with carbon capture focus) and Glenrock Petroleum (oil and gas development company).

Differentiator

Problem solved

Functional benefit

Products and services

• Private Equity Investment Management
• Glenrock Energy
• Glenrock Petroleum

Named customers2 records

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core and minor.

• PacifiCorpcoreStrategic or Co-development Partner · 1 July 2018Portfolio company Glenrock Energy began formal engagement with PacifiCorp in July 2018 for proper review of CCUS (Carbon Capture, Utilization, and Storage) feasibility for its Dave Johnston coal-fired power generation facility in Converse County, Wyoming.
• State of WyomingcoreStrategic or Co-development Partner · 1 February 2018Glenrock Energy working with State Representatives for Wyoming on expanding viability and deployment of carbon capture technology. Contributed to passing of landmark FUTURE Act in February 2018.
• Herington LLCminorStrategic or Co-development PartnerTodd E. Benson serves as Managing Partner & CEO of Herington LLC, an investor in, advisor to and board member of private-capital backed companies.
• Knock Knock Give a SockminorOthersAri Bernstein financially launched Knock Knock Give a Sock, a charity that creates personal relationships between successful professionals and individuals experiencing homelessness. Also co-founded a synagogue in Greenwich Village.

Scale indicators4 records

Recent moves4 records

Expansion highlights3 records

Direct peers

• Generate Capital: Generate Capital is a specialty private investment firm focused on sustainable infrastructure and decarbonization projects serving both investors and operators. Direct peer to Greene Street Capital because both operate as impact-aligned PE managers investing capital into real-world decarbonization and resource-transition projects with a fund-style structure and sector focus.
• Kimmeridge Energy Management: Kimmeridge is a private equity firm dedicated to the energy sector with a multi-strategy approach across upstream, midstream, and energy transition. Direct peer to Greene Street given the shared energy-PE mandate, GP-led operating involvement, and dual focus on hydrocarbon assets plus decarbonization/transition theses.
• Obvious Ventures: Obvious Ventures is a venture capital firm investing in world-positive companies across sectors. Direct peer given its impact-first PE/VC mandate and willingness to back unconventional business models where positive impact and commercial returns overlap, similar to Greene Street's "Value + Values" thesis.
• S2G Ventures: S2G Ventures is a venture and growth-stage investment firm focused on companies driving transformation across food, agriculture, and energy. Direct peer to Greene Street in its impact PE/VC posture and willingness to deploy capital at the intersection of sustainability and industrial-operating thesis.
• Closed Loop Partners: Closed Loop Partners is a private equity and venture capital firm focused on circular economy, sustainable consumer goods, and resource recovery. Direct peer to Greene Street's mission-driven PE model — both raise capital from impact-oriented LPs and back operators delivering measurable environmental outcomes alongside financial returns.
• Energy Capital Partners: Energy Capital Partners is a private equity firm focused on energy infrastructure and power generation investments. Direct peer to Greene Street's energy-platform mandate; comparable in deploying private capital into operational energy assets with a value-add operating thesis, though ECP operates at significantly greater scale.

Broad incumbents

• Blackstone Energy Transition Partners: Blackstone Energy Transition Partners is a large-scale private equity platform dedicated to energy transition investments. Broad incumbent overlap — pursues many of the same decarbonization/CCUS-related themes Greene Street targets, but operates at $multi-billion fund scale and across a far broader sector mandate.
• Brookfield Renewable Partners: Brookfield Renewable is one of the largest publicly traded renewable energy and decarbonization infrastructure platforms. Broad incumbent in the energy-transition investment space with mission alignment to impact investing and a comparable focus on capital deployment for sustainability outcomes, though at vastly greater scale.
• KKR Global Infrastructure: KKR's Global Infrastructure platform invests across infrastructure and energy transition assets. Broad incumbent comparable to Greene Street Capital — overlapping investor base, similar capital deployment narrative around energy transition, but at vastly larger scale and through institutional-grade funds.

Emerging players

• Clean Energy Ventures: Clean Energy Ventures is an early-stage venture capital firm funding climate-tech and decarbonization ventures. Emerging player in the same niche Greene Street Capital serves — focused on backing energy-impact companies — though with an earlier-stage, venture-only deployment model rather than PE operating-asset involvement.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/greene-street-capital

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Greene Street Capital