Our Team



Andrew J. BernsteinManaging Partner

Recently named an Entrepreneur of the Year® 2019 Award Finalist in New England, 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.

Marc T. Stewart, Chief Financial Officer

Mr. Stewart joined Kearsarge Energy in July 2018 as Chief Financial Officer.  With over 20 years of experience in the energy industry, Mr. Stewart is an accomplished senior finance executive with a record of success leading value initiatives for stakeholders in development stage and large cross-cultural international organizations. 

Previously, he was Chief Financial Officer of InterGen whereby he contributed to transforming a start-up power generation company into a global multi-billion dollar operating and development business across six continents and 20+ countries.  Mr. Stewart has directed all aspects of several multi-currency debt and equity capital raising initiatives, successfully raising over $3 billion of corporate and project financings.  As CFO, Mr. Stewart had global responsibility for the company’s finance, investor and rating agency relations, accounting, taxation, treasury, risk management, and business planning functions.  Additionally, Mr. Stewart has directly advised multiple large private equity firms on M&A due diligence efforts and strategic reviews.  Mr. Stewart is a graduate of the University of Richmond E. Claiborne Robins School of Business.

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.  

Patricia Fennessey, Director Asset Management

Ms. Fennessey is the Director of Asset Management concentrating on optimizing solar systems performance and Asset Management for Kearsarge Energy.  Ms. Fennessey held senior management and technology leadership roles in a variety of public and private firms in the management consulting, market intelligence, and high technology arenas.

Ms. Fennessey was Managing Partner for Utopia Inc, taking the company to a successful acquisition by USWeb.  At startup venture HUbX, Ms. Fennessey led Client Services until the company’s acquisition by Synxis.  At high tech social media company Cymfony, Ms. Fennessey led the development of its flagship technology platform, in addition to managing its Fortune 500 Client Management practice.  Most recently, Ms. Fennessey was Sales Director for Visible Technologies, (acquired by Cision, Inc), acquiring and managing its flagship portfolio of Pharmaceutical, Automotive, and high technology clients.

Ms. Fennessey began her career as a Systems Analyst and DBA in the mainframe era, which instigated her career-long fascination with all things “tech”. She is a graduate of Mount Holyoke College with honors.

Amit Barnir, Director of Wholesale Market Operations

Mr. Barnir joined Kearsarge Energy in January 2019 and brings with him a deep background in consumer and wholesale energy management. With almost a decade in retail energy markets, Mr. Barnir is unlocking incremental market revenues from Kearsarge’s solar asset portfolio, while driving new market development in energy storage and community solar.

Prior to joining Kearsarge, Mr. Barnir was VP of Electric at Great Eastern Energy, where he led the entire retail lifecycle, including operations, finance, risk management and trading of power and renewables. Mr. Barnir also engineered mission critical operational software for retail energy providers through his own company, Ende Solutions.

Mr. Barnir graduated Magna Cum Laude from Rutgers University with a degree in Economics, and Rutgers Business School with a Finance degree. He got his start in the energy industry while still a student, as an analyst on the prestigious Electric Pricing team at Hess Corporation. 

Paul Raducha, Project Developer

Mr. Raducha specializes in nurturing solar projects from very first concept to commissioning.  During the course of his career Mr Raducha has managed development of over 100MW of installed renewable energy projects, including landfills, brownfields, landfill gas-to-energy and landfill gas-to-vehicle fuel.   As a recognized expert in solar development, Mr. Raducha is also actively involved in the drafting and support of renewable energy legislation in New England and across the US. Locally, Mr. Raducha is a sought-after speaker and participant on local boards, commissions and events focused on renewable energy.

Mr Raducha began his career as a CPA with KPMG Peat Marwick, where he focused on the Energy vertical.  From there, Mr. Raducha joined Lux Research, a premier provider of high technology research and advisory services, where he drove Renewable Energy projects at all stages in the development cycle: project identification, vetting, development, financing, project management, and asset management, providing client value and expertise in all phases of renewable energy R&D.

An honors graduate of Clarion University of Pennsylvania, Mr. Raducha is an avid hiker, fly fisherman and swimmer, and is the Founder and President of the National Association Of Rocketry, Rhode Island Chapter, where he is Level I certified in High Power.

Alex Young, Asset Management Analyst

Mr. Young is responsible for optimizing the performance of Kearsarge’s solar portfolio as both a data sleuth, and operations project manager.  In addition to monitoring the installed base, Mr. Young performs analysis for pipeline projects, propelling them through numerous State and National registration and data gathering processes.  At project completion Mr. Young is responsible for final document curation and quality, in addition to assisting with spot analysis tying financial results to solar performance in the field.

Previously, Mr. Young worked for two solar energy firms in the Greater Boston area, performing financial analyses and sales support for solar clients. An entrepreneur at heart, Mr. Young has focused his career on new and fast-growing companies in the renewable energy sphere.   

Mr. Young received his undergraduate degree from The College of The Holy Cross, where he majored in Environmental Studies. Driving global sustainability through renewable energy has been the motivating force in his career.

As a college athlete and leader, Mr. Young was a member of the Division I Swimming & Diving team at Holy Cross, where he served as Senior Captain and a member of several record-breaking relays.

Tom Holt, Senior Construction Manager

Mr. Holt comes to Kearsarge from BlueWave Solar, where he began as a Site Acquisition Analyst, rapidly growing into roles of increasing responsibility.  As a Planning and Development Associate, Mr. Holt focused on real estate development, designing preliminary site plans, and representing the firm in negotiations with land owners and Town Managers.  In short order, he took on the role of Construction Manager, responsible for every aspect of on-time and on-budget completion of the solar construction process.  Mr. Holt’s deep experience in the management of interconnection and environmental issues, partner management, and advanced solar technology implementation make him a key contributor to the Kearsarge team.

Mr. Holt was educated at the University of Massachusetts Amherst, where he received a B.S. in Landscape Architecture.  Before focusing on renewable energy, Mr. Holt was a construction manager and estimator.

When Mr. Holt isn’t wearing a hard hat, he is involved in local environmental groups, including the Merrimack River Watershed Council where he served on the Board of Directors.  An accomplished drone operator, Mr. Holt is credentialed by the FAA as a Remote Pilot.

Evan Tannenbaum, Senior Financial Analyst

Mr. Tannenbaum joined Kearsarge in February 2019 as a Senior Financial Analyst. Mr. Tannenbaum’s primary responsibilities include strategic modeling and analysis, acquisition analysis and strategic business plan development. In addition, he supports the executive team in project debt and tax equity financing and structuring including legal and financial due diligence. After project completion, Mr. Tannenbaum is responsible for the ongoing monitoring of project financial performance.

Prior to joining Kearsarge, Mr. Tannenbaum spent three years in KPMG’s Economic and Valuation Services practice, most recently as a Senior Associate, preparing valuations of businesses and assets for strategic, financial reporting and tax purposes.

Mr. Tannenbaum attended the Pennsylvania State University where he earned his B.S. in Energy, Business and Finance and his Masters of Accounting. Mr. Tannenbaum has passed all three levels of the Chartered Financial Analyst (CFA) exam and is a licensed CPA in New York and Massachusetts. During his free time, Mr. Tannenbaum enjoys experimenting with new recipes and techniques in the kitchen.

Connor Koellner, Senior Accountant

Mr. Koellner supports financial and accounting operations.  Assisting the Director of Finance and Accounting, he works on quarter, year-end closings and audits along with preparation of financial statements. Mr. Koellner maintains all ledger activity along with day-to-day accounting responsibilities. 

Prior to joining Kearsarge Energy, Mr. Koellner was Senior Mutual Fund Administrator at State Street Bank & Trust preparing and reviewing financial statements and reports for issuance to the Securities and Exchange Commission.  During his four years at State Street he spent three months abroad in Bangalore, India opening an Operations office.

Mr. Koellner received his BS in business administration from Bryant University with a concentration in accounting.

When Mr. Koellner isn’t in the office he is taking part in numerous outdoor activities such as hiking, snowboarding, cycling or golfing. From April 2018 to September 2018 he ‘thru hiked’ the 2,200-mile Appalachian Trail from Georgia to Maine, accomplishing one of his longtime goals.

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.

Buttercup, Fat Olli, Fred Astaire et al., Summer Interns

The reader will forgive us for introducing the 2019 summer interns as a group – they actually prefer it that way. 

Prior to joining Kearsarge Energy, Ms. Buttercup, Mr. Olli, Mr. Astaire, and their cohorts, were under the care of Christian Stovall, our intrepid shepherd and organic livestock provisioner.  Mr. Stovall is a graduate of the University of Vermont, and is a premier solar grazing specialist, among other things. 

You’ll find the interns toiling under and around the solar panels discharging their sole responsibility, which is eating. Grass, weeds, poison ivy — they do what they like and they like what they do. With the exception of an irrational fear of our drone, the lambs have settled in very nicely, cuddling up under the panels at night, lounging when it’s hot, and of course, lunching. All day, every day.

Strained levity aside, grazing at Kearsarge arrays is a huge step forward in making solar energy truly sustainable.  Sheep preclude the use of loud, intrusive gas mowers at our sites, and they fertilize the flora as they graze, which is good for pollinators and other native species — all the while enhancing natural erosion control. 

You’ll find more lambscapers next year at various sites in the portfolio, so stay tuned for updates.