Our Team



Andrew J. BernsteinManaging Partner

Mr. Bernstein has over twenty-eight years of executive leadership experience managing a broad range of organizations and divisions of large publicly traded corporations to early stage entrepreneurial enterprises with two successful exits. Mr. Bernstein served as CEO & President of Cymfony Inc., a market intelligence and media analysis company which was purchased by TNS Media in 2007 and then WPP PLC.

Previously, he was managing Partner of HotHouse Venture Partners, an early stage venture capital and consulting organization, and Chief Operating Officer and Executive Vice President of Articulate Systems, a software company specializing in voice and data applications acquired by Lernout & Hauspie in 1999. In addition, Mr. Bernstein has also worked in investment banking where he focused on capital formation, project finance and mergers and acquisitions. He also started and ran the global division of a publicly traded NYSE company for five years. Mr. Bernstein has significant experience working with the Federal Government and Intelligence Agencies leading Cymfony to obtain a Secret Clearance and become a supplier to several intelligence agencies. He also currently serves on or leads several for-profit and non-profit boards. Mr. Bernstein is a graduate of Brown University and holds an MBA from Harvard Business School with Honors.

Michael Maynard, Director

Mr. Maynard, in addition to working in renewable energy for the last four years focusing on Solar Projects and BioMass, has over twenty five years of experience as a principal in real estate investment and development, including investment in both commercial and residential projects, residential land development, adaptive reuse and vertical development of residential and resort projects in Florida and New England. Development activities encompassed all aspects of project development including site acquisition, planning, market analysis, design, finance, construction, marketing and sales. Mr. Maynard is currently developing a 20 MW solar facility adjacent to the Joint Base (McGuire Air Force Base, Fort Dix Army Base, Lakehurst Naval Air Station) in Burlington County, NJ, and several commercial-scale early stage anaerobic digester projects across Northeast.

Previously, Mr. Maynard worked in finance, business development and administration with Warner Communications Inc., a $4 billion Fortune 100 company, and the world’s largest entertainment company. He also served as Head of Broadcast Production (Film, TV, Radio and Music) at Ingalls Associates—one of New England’s largest advertising agencies

Mr. Maynard earned his BA from Dartmouth College and MBA from Harvard Business School, and currently serves on several non-profit Boards including Board Chair at the Coolidge Corner Theatre Foundation, Brookline, MA.

Everett W. Tatelbaum, Vice President

Mr. Tatelbaum, a member of Kearsarge’s founding team, now leads strategy, finance, project development, asset management and energy policy.  He played a key role in the development, tax equity and debt financing, construction, and operations of Kearsarge's portfolio of more than 60 MW and $180 million of solar PV projects in New England and Hawaii, with a focus on partnerships with municipalities and other public organizations.  Mr. Tatelbaum's experience includes the structuring and deployment of multiple financing platforms and capital sources, including private equity, tax equity and debt.  Projects have included commercial and utility-scale capped landfills, brownfields, agricultural land, rooftops, parking canopies and greenfields.  Prior to the founding of Kearsarge he worked in Research at BCK Law, P.C. where he focused on energy efficiency and regulatory affairs.

Previously, Mr. Tatelbaum taught mathematics, completed a one-year AmeriCorps community service term and worked in Public Policy Research at the Rappaport Institute for Greater Boston, Kennedy School of Government, Harvard University.  In addition, he completed a ten-month intensive field study in sustainable agriculture and alternative energy (Ireland, France, Italy, Germany, Hungary, Greece).

Mr. Tatelbaum earned a BA from Wesleyan University and studied Finance at Harvard University.

Steven J. Allenby, Director, Energy Efficiency & Utility Relations

Mr. Allenby has previously served as Senior Vice President Marketing and Operations, Central Vermont Public Service Corporation, where he was responsible for system operations, retail marketing, sales forecasting, pricing, energy efficiency and regulatory relations, serving as the company's chief policy witness before the Public Service Board.

Mr. Allenby previously served as Senior Vice President, United Financial of Illinois, where he was responsible for energy related financing, including energy efficiency and renewable energy projects. While there he also provided seminars and other training for utilities and energy service companies regarding federal government energy efficiency and renewable energy project financing.

In addition, Mr. Allenby is President of Allenby Associates, providing strategic planning and other consulting services to energy service companies, utilities, and financiers regarding energy efficiency and renewable energy projects and programs. He is minority owner and business development advisor for Native Energy, leading carbon offset provider and partner in the development of several wood biomass power plants. He negotiated model agreement between utility industry and the Department of Defense to facilitate energy efficiency and renewable energy construction at government facilities. Mr. Allenby earned his JD from Vermont Law School (Cum Laude) and BA, from Heidelberg College (Magna Cum Laude).

Thomas Gebhard, Director, Business Development

Mr. Gebhard has more than 20 years of experience in the merchant energy business as a senior executive in business development with Tractebel Power, Citizens Power, Edison Mission Energy, NY Energy LLC, Blue Rock Energy and Energy Matrix LLC.  Experienced in project development, plant acquisitions, project finance and structured transaction origination, Mr. Gebhard has been a team leader responsible for numerous complex energy transactions and has worked closely with major Wall Street investment banks.  His expertise is in the identification, valuation, and negotiation of complex energy transactions that bring substantial intrinsic value to project portfolios.  He has been a key player in the development and construction of numerous power projects that continue to operate successfully in the power market.  These projects were required to be fully hedged and project financed prior to construction. 

Mr. Gebhard also has expertise in the application of information technology to create competitive advantage in complex financial and industrial environments.  New York Energy, with Mr. Gebhard taking the lead, completed the largest retail electric power aggregation transaction ever done in the United States. 

Mr. Gebhard earned a BSME degree from the University of Pennsylvania and an MBA from the University of Virginia.

Jim Vaughn, Director, Project Development

Mr. Vaughn developed the largest solar project (5.7 MW) in operation in New England at the time of its completion in August of 2012, and has cultivated a proven network of resources necessary to permit, connect, install, and operate utility scale solar projects.

Previously, he spent thirty years running Vaughn Manufacturing Corporation (VMC) – a water heater manufacturing company whose primary business was to create and supply rental water heater programs (and Demand Side Management load reduction programs) to electric utility companies throughout North America. In addition, while at VMC Mr. Vaughn led marketing efforts and grew the sale of solar water heaters to the point where VMC was the largest producer in the country.

Over the course of his three decades in the industry, Mr. Vaughn has established outstanding working relationships with numerous Investor Owned, Cooperative, and Municipal utilities across the country.

Mr. Vaughn was a past President of the New England chapter of the Solar Association (NESEIA) – from Maine to NJ, and has served as a Member of the Board of Directors of the National Solar Association (SEIA).

Mr. Vaughn earned his B.S. in Business Administration from Colorado College.

Adam Vosker, CPA, Director, Finance & Accounting

Mr. Vosker leads financial operations and accounting. He is responsible for overall financial strategic planning and management as well as project level financials.  In addition, he handles all internal and external reporting requirements for all stakeholders including commercial banks and tax equity partners. He sets and maintains all financial and reporting controls to comply with GAAP and partner requirements.    

Previously, he was Director of Accounting at Black Box Network Services, a $1B, publicly-traded multinational communications solutions provider, where he oversaw accounting and financial reporting for government clients, including GAAP, SOX and Federal Acquisition Regulation compliance.  He led auditing and tax filings for clients at Alexander Aronson Finning CPAs, a large regional CPA firm based in Westborough, MA, focusing on non-profit, manufacturing, and professional services companies, and also managed financial reporting, annual and monthly budgeting and annual audits for CCA USA, Inc.

Mr. Vosker, CPA, earned his BA from the University of Massachusetts, and a Master of Science in Accounting from the Sawyer School of Management.

Henry Barrett, Associate, Asset Management & Project Development

Mr. Barrett focuses on business development, due diligence and asset management for Kearsarge’s portfolio of solar PV projects. He has worked in the renewable energy space over the past two years in various capacities, including at start-ups focused on residential solar and small-scale hydro. In addition, he worked as a Fellow for Meister Consultants Group where he focused on international and local renewable energy policies. He also spent four years as a Legislative Aide in the Massachusetts State House working on energy policy, regulatory issues and constituent services.

Mr. Barrett received his BA from Colorado College and earned an MA in International Energy Policy and Business from the Fletcher School of Law and Diplomacy at Tufts University.  

Alex Deng, Associate, Finance & Accounting

Mr. Deng has four years’ experience both evaluating equity investments in energy assets for private firms and performing financial planning and analysis for a publicly-traded internet company.  At Kearsarge, Mr. Deng is responsible for strategic modeling and analysis, helping Kearsarge continue its expansion both in solar and other renewable energy opportunities.  Mr. Deng joins Kearsarge after working at Cimpress doing revenue reporting and capital allocation for a portfolio of international brands.  Prior to this, he was an analyst for Soltage, a solar development company where he worked on new project assessment and asset management.  Prior to Soltage, Mr. Deng was an analyst for Glenfarne Group, an energy and infrastructure developer, principal investor, and long-term asset manager based in New York City where he evaluated new projects and assessed risk.

Mr. Deng holds a BA of Economics from New York University while having pursued finance coursework at the Stern School of Business.

Mathew RubinAdvisor

Mr. Rubin is General Partner of Winooski One Partnership, Winooski Hydroelectric Company, Springfield Electric Company and co-owner and manager of three hydro projects in New England.  He has served as President of Spruce Mountain Design, a hydropower development, operations and construction consulting firm, having served as management consultant to over forty hydro project clients.  In addition, Mr. Rubin was Chief Executive Officer of Northeast Kingdom Wind Power LLC.  He holds a BA from Harvard University and has held the following offices: President and Board Member Vermont Electric Power Producers, Inc., Treasurer and Board Member Vermont Independent Power Producers Assn., and Treasurer and Board Member Vermont Public Interest Research Group.