Key Members


Dennis J. O’Brien

President and Chief Executive Officer and Member of the Board

Dennis J. O’Brien serves as the President and Chief Executive Officer. Mr. O’Brien has been involved in the propane and heating oil industry for over 32 years. He began his career in 1980 as a General Manager with Hodgdon Energy, Inc., a petroleum distributor in Berlin, New Hampshire. In 1988, Mr. O’Brien became a District Manager at Dead River Company, a regional petroleum distributor in Waterville, Maine where he continued to work until 2000.  Subsequently, Mr. O’Brien joined Irving Oil Company, a Canadian-based oil and natural gas refining/distribution enterprise headquartered in Portsmouth, New Hampshire. While working for Irving until 2004, he served as Irving’s New England Operations Manager with responsibility for 20 field offices serving in excess of 100,000 energy customers.  In August 2004, Mr. O’Brien founded Seacoast Energy Consulting, a consulting company focused on delivering value to ownership and senior management for New England companies providing retail energy services.  Seacoast Energy Consulting provided energy companies throughout the Northeast with guidance on strategic planning, planning leadership training, management, sales and operational consulting, enterprise valuations and merger and acquisition assistance.  


John Tolan

Chief Operations Officer

As Sail Energy’s Chief Operations Officer, John Tolan is responsible for the performance of division operations as well as oversight of the company’s sales and marketing programs. Mr. Tolan also directs Sail’s Safety & Compliance team. Prior to joining Sail Energy in 2014, Mr. Tolan began his career in the petroleum industry in 2003 with Irving Oil Corporation, working for Mr. O’Brien as a District Manager . While with Irving, he held senior level positions as Manager of International Logistics and Supply Chain and in Project Management. As a Project manager, he was involved in numerous initiatives including infrastructure change management, mergers and acquisitions and business line startups. Mr. Tolan served as New England District Operations Manager until 2014 when he joined Sail Energy as Senior Project Manager. 


Joseph Reny

Chief Financial Officer

As the Company’s Chief Financial Officer, Mr. Reny has overall responsibility for Finance, IT, Product Supply and Commodity Price Protection. He also participates in the overall management of the company and handles investor relationships and documentation. Prior to joining Sail Energy in 2015, Mr. Reny spent two years as an Assistant Vice President at UNUM Life Insurance and was responsible for providing senior executives and their teams with financial analysis. From 1999 to 2013, Mr. Reny held various executive positions at Irving Oil including Controller of US Operations, Director of Wholesale Supply, Director of IT and Director of Supply Management. Before joining Irving Oil, Mr. Reny was a manager at Schatz, Fletcher & Associates where he performed audits and provided tax and acquisition advice for a diverse range of clients including manufacturing, banking, retail and service companies. Prior to this, he worked as a Chief Financial Officer with Crowe Rope Industries, LLC, where he focused on consolidating multiple manufacturing locations, acquiring additional manufacturing and distribution facilities, banking relationships and the accounting function of the company.