Funding The Clean Energy Transition

Green Bridge is leading the expansion of clean energy infrastructure in the commercial and industrial segment across the US. We de-risk project development, investment, and execution for both developers and the investment community.


Project Finance

We finance projects across the Commercial & Industrial segment – Operating Companies, Municipalities, Universities, Hospitals, and Schools – through PPAs and Operating Lease structures. These off-balance sheet financing tools allow public and private organizations to save money on electricity with no upfront cost.

Investment Platform

Financing and Development Management platform at the forefront of the clean energy movement providing Developers and End Users with seamless financing capabilities and Capital Providers with efficient access to Commercial & Industrial renewable energy projects with strong, predictable returns.

Our Mission

At Green Bridge Energy

To enable the expansion of clean energy across North America through efficient financing.

End-Users We Finance

  • Commercial and Industrial Companies
  • Community Solar
  • Universities & Schools
  • Municipalities
  • Hospitals/Healthcare
  • Religious Institutions
  • Tribal Entities

Clean Energy Partners

  • Developers
  • Installers
  • Component Manufacturers
  • Distributors

Solar PV

Sustainable Infrastructure

Distributed Microgrid

EV Charging Infrastructure



Byrne Huddleston

Byrne Huddleston

Chief Executive Officer

Byrne Huddleston, co-founder and CEO of Green Bridge Energy, oversees the strategic growth and performance for the company. Prior to this role, he spent 15 years with GE Capital in various commercial and leadership roles focused on structured finance and leasing to commercial and industrial companies in the US. Mr. Huddleston holds a MBA from University of North Carolina – Chapel Hill and B.A. from Randolph-Macon College. In his personal time, he enjoys coaching youth basketball, and traveling with friends and family.

Justin Sullivan

Justin Sullivan

Chief Investment Officer

For 16 years, Justin led a variety of commercial teams across GE’s energy and financing units. As Commercial Leader within GE’s Renewable Hybrids unit, he led development and financing efforts for hybrid energy projects. Prior to this role, Justin was a founding member of the Distributed Energy Solutions incubator at GE Power. With a strong background in financial structuring, Justin initiated several market and product developments as Managing Director of GE Corporate Finance and Distributed Energy market leader for GE Industrial Finance.
Dr. Nate Putnam

Dr. Nate Putnam

Chief Technology Officer

As CTO, Dr. Nate Putnam applies a decade of experience developing software, analyzing energy systems, and designing resource-efficient military base camps to build and execute our technology strategy. Linking financial models with engineering assessments, Nate brings in-house technical expertise and data-driven decision support to the leadership team. Dr. Putnam served as a researcher and technical program manager for the US Army Corps of Engineers and holds a PhD in Mechanical Engineering from UT Austin. Nate only has time for work, house projects, and the abundant and abundantly gratifying challenges of helping to raise two boys and a dog.

Adam Brown

Adam Brown

Project Finance Manager & Treasurer

As Green Bridge Project Finance Manager & Treasurer, Adam brings over a decade of experience in commercial real estate consulting and development prior to moving to utility-scale solar development in 2016. His consulting experience involved extensive investment analysis and modeling, private equity syndication, and, from his time in the Low Income Housing Tax Credit (LIHTC) space, layering tax advantages onto traditional investment structures in complex partnerships. Applying this knowledge forward into the renewable energy space, Adam leads finance and partnership structuring that accounts for the complexities associated with the tax advantaged investment strategies of clean energy infrastructure. Adam holds a BA from Gonzaga University and outside of work, enjoys being outdoors with his wife, Amy and their dog, Falcor.
Clay Siegert

Clay Siegert

Operations Leader

As Operations Leader, Clay Siegert manages electric vehicle charging, partner supply chain and client delivery functions for Green Bridge. Prior to this role, Clay spent over 15 years with high-tech and electric vehicle industries as a co-founder of fleet electrification company XL Fleet, head of customer operations at Formlabs, and as the EV charging operations lead for 7-Eleven. Clay holds a master degree in supply chain management from MIT, and a B.A. from Trinity College in CT. In his personal time, Clay enjoys playing pickup basketball, coaching his three daughters in both basketball and lacrosse, and skiing with friends and family.

Adam McBride

Adam McBride

Fund Leader

As Green Bridge Fund Leader, Adam focuses on formation and management of investment vehicles and partnerships. Previously, Adam spent 15+ years in the alternative investment industry and has expertise in due diligence and portfolio management. In addition, he has extensive experience in fund operations as a practitioner and in evaluation of third-party managers. Most recently, as Associate Portfolio Manager at Chesapeake Asset Management, he served as lead relationship manager for the firm’s largest clients and co-managed the advisory business. Adam graduated from Georgetown University and is a CFA Charterholder. He and his wife spend their time chasing their two young boys.
Rick Wargo

Rick Wargo


Rick is a highly innovative and successful hands-on technology leader with extensive experience in modern software engineering, data architecture, information security, and analytics. In recent years, Rick has designed and led development of performant and secure data platforms in healthcare and finance, built software-based control systems for regulating energy between EV charging, solar, and utility power, active in technical communities, and even awarded the designation of Alexa Champion by Amazon for his many contributions to the community. Rick’s passion for innovation is stimulated by his love of learning and an immersion in current technology. In his spare time, Rick enjoys a good sci-fi novel, being on the beach, tinkering, photography, and cooking. He is supported by the generous and much-appreciated love from his wife, Karen, and their boy/girl twins.

William Cullinan

William Cullinan

Senior Advisor

William Cullinan is a Senior Advisor at Green Bridge where he helps with all aspects of growing the Green Bridge brand. Additionally he serves as a Managing Director at Warren Road, a single family office based in Boston, MA. Prior to joining Warren Road in 2023, William worked at Angelo Gordon for 7 years as a Managing Director in the Client Partnership Group focused on the firm’s US institutional consultant relations efforts. Prior to joining Angelo Gordon, William was a Managing Director at Easterly Asset Management. While at Easterly he was responsible for capital formation and business development with institutional investors, foundations, endowments, family offices, and consultants. Earlier in his career William held roles at Putnam Investments Global Institutional Management Group, Garelick Capital Partners, and Merestone Partners. He began his career at UBS Investment Bank.

William received a BA in Management from the Isenberg School of Management at the University of Massachusetts, Amherst, where he played division one lacrosse. He is actively involved with the Year Up and Hole in the Wall Gang charities as well as a Committee Member for the Navy SEAL Foundation New England Chapter Gala.

Who We Are

Green Bridge Corporation brings 35+ years of combined experience in solar development, structured finance, and investment with a focus on driving capital efficiency and scale to mid-market clean energy project financing.


Get Energy Independence

Contact Green Bridge Energy

Call Our Offices

US Office
+1 (206) 558-1198

Actively Looking To Invest?

If you have a renewable energy infrastructure project and are in need of partners, Green Bridge Energy is actively looking to invest. Call us today.