Management Team

XNG is managed by a team of seasoned professionals with extensive experience in the energy, engineering, technology and finance sectors. We are committed to excellence, innovation, and creativity and have amassed an impressive track record launching successful new projects and providing unique business solutions. We support our customers through every step of the fuel conversion process to ensure they realize the cost savings, increased efficiency, and environmental benefits that are the cornerstone of our business.

John Nahill, XNG
John Nahill
President and Co-Founder

A seasoned business development and investments professional, John combines 25 years of experience and a passion for energy to lead XNG with a sophisticated balance of entrepreneurialism and deep industry knowledge. Prior to XNG, John served as Managing Director of Devonshire Investors, a division of Fidelity Investments, in Boston. He is a graduate of Connecticut College and the Massachusetts Institute of Technology’s Sloan School of Management.

Seth Berry, XNG
Seth Berry
Chief Administrative Officer & General Counsel and Co-Founder

Drawing on nearly two decades of legal practice and leadership positions, Seth delivers high-level expertise and sound guidance to XNG and its partners. As the former Senior Legal Counsel for Fidelity Ventures and Devonshire Investors, and COO of OnCorps, LLC, Seth is a skilled advisor providing valuable strategic direction to the company. He is a graduate of the College of the Holy Cross and Boston College School of Law.

Doug Hanson, XNG
Doug Hanson
Chief Technology Officer

Entrenched in the natural gas and liquid natural gas industry, Doug provides a sophisticated knowledge and expertise to XNG. A former Field Engineer for CryoFuels Systems, he is a superior operations leader and project manager, ensuring that all XNG systems are functioning with the greatest efficiency and safety at all times.

Matt Smith, XNG
Matt Smith
EVP, Sales & Marketing and Co-Founder

Matt brings an informed and multi-faceted skill set to XNG with years of experience in overseeing multi-million dollar construction and energy projects. Experienced in the regulatory and state permitting processes for energy procurement and management, Matt brings valuable knowledge to the conversion process to help customers achieve success.