# Green Rock Energy Partners

Green Rock Energy Partners is an Asset Manager based in Stamford, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** Stamford, United States
- **Region:** North America
- **Address:** One Dock Street, Stamford, CT 06902
- **Assets under management:** Undisclosed
- **Website:** greenrockep.com

## Regulatory record

- **CRD number:** 338925
- **SEC file number:** 802-135109
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/338925

## About

Green Rock Energy Partners LLC is a sustainable infrastructure-focused private equity firm which invests in renewable energy companies and projects. Green Rock primarily focuses on waste-to-value energy assets, which play a critical role in the ongoing energy transition to a low-carbon future. The firm deploys equity capital within the circular economy to develop, purchase, and operate environmentally responsible and financially attractive businesses & infrastructure which produce renewable natural gas, renewable diesel, renewable fertilizer, and other similar products.

## Sectors

- Energy Transition & Renewables

## Offices

- 28 Liberty Street, 6th Floor, New York, NY 10005

## People

- Andy Kelleher — Managing Partner & Co-founder
- William Forster — Managing Partner & Co-founder
- Steven Schmitz — Managing Partner & Co-founder
- Martin Mitchell — Managing Partner & Co-founder
- Cody Myers — Managing Partner & Co-founder
- Ryan Connell — Principal
- Ian Kelleher — Vice President
- Gunnar Dancer — VP of Commercial
- Ariel Bittelman — Senior Analyst
- Jack Klinger — Senior Analyst

## Questions

### What investment stages does Green Rock typically target?

The firm self-identifies as an early-stage investor targeting companies that are currently profitable within the renewable fuels space. It also maps a pipeline of near-future technologies — green hydrogen and electrification — that it expects to become highly profitable, alongside longer-term expansions into bio-plastics and marine energy.

### Which sectors does Green Rock explicitly avoid?

No explicit negative sector list is published. The firm's public strategy concentrates exclusively on sustainable infrastructure and renewable fuels, and it does not profile investments outside of renewable natural gas, renewable diesel, renewable jet, green hydrogen, electrification, bio-plastics, or marine energy.

### Where does Green Rock's capital come from?

The firm does not publicly disclose its limited partners or capital source. The five co-founders brought commodities and logistics operating experience to the launch, but no wealth-origin narrative — such as a single-family fortune or institutional anchor investor — is stated on its site.

## Related profiles

- [Gamesa Venture Capital](https://altss.com/profile/gamesa-venture-capital)

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Last updated: 2026-06-03T20:00:00.000Z

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