
Building a team of talented individuals who share our values and drive our mission forward
Senior Leadership

Dan de Boer

Dan de Boer is Chief Executive Officer of Greenbacker, and also serves as the company's Head of Infrastructure. He joined the company in 2023, bringing nearly two decades of experience in private equity and renewable energy investing. Prior to joining Greenbacker, Dan served as the Head of Renewables at Allianz Capital Partners of America, where he led all aspects of the investment lifecycle and played a pivotal role in shaping the strategic direction of their sustainable infrastructure platform. During that time and earlier, he successfully acquired and financed GWs of solar, wind, and storage projects, raised substantial private equity funds, and effectively managed investment platforms. Prior to Allianz, Dan spent time developing solar projects with VivoPower International Plc, established Onyx Renewable Partners LP within Blackstone Energy Partners, and launching D. E. Shaw Renewable Investments while part of the D. E. Shaw Group's private equity team. Dan received an MBA with honors from the Wharton School at the University of Pennsylvania and a BA from Yale University.

Carl Weatherley-White

As the Chief Financial Officer and Head of Capital Markets, Carl oversees Greenbacker's accounting and finance team and manages the financing of the company's diverse project portfolio. He oversees tax equity and project financing for GREC’s pre-operating asset fleet and pursues opportunities to optimize GREC’s existing capital structure within the rapidly evolving infrastructure capital markets. Carl brings a wealth of experience in infrastructure financing, particularly in the renewable energy sector. Before joining Greenbacker, he served as the Head of Renewable Investments at Advantage Capital. In this capacity, he led the creation of the firm’s renewable energy tax credit syndication platform and played a pivotal role in originating and structuring over $1.5 billion in tax credit investments. Previously, he held the positions of CEO and CFO at VivoPower International, a global energy infrastructure firm. During his tenure, he played a key role in the company’s successful IPO on NASDAQ and, subsequently, took the helm in actively steering the organization’s growth strategy. His previous experience includes Managing Director & Group Head of Global Project Finance at Barclays Capital and Lehman Brothers and Director of Energy Structured Finance at Credit Suisse.

David Sher

David oversees all strategic business development efforts as President of Greenbacker Capital Management. Prior to co-founding the firm in 2011, he was a senior adviser at Prospect Capital, a leading publicly traded business development company. He has been a serial entrepreneur in the financial services industry, having co-founded ESP Technologies—a leading provider of financial software and services to institutional asset managers and hedge funds—as well as two other companies, ElephantX Dot Com and Lafayette Capital Management. He also worked at Bear Stearns, developing trading strategies for institutional and brokerage correspondent clearing customers. David graduated from Rutgers University with a BA in Political Science and received his MIA from the School of International Public Affairs at Columbia University.

Debi Lee

Debi is the Chief People Officer at Greenbacker, overseeing the firm’s people strategy. Since joining the company in 2024, she has developed and led initiatives to progress talent management, diversity, equity & inclusion, employee engagement, performance management, leadership development, compensation strategies, and people analytics. With more than 20 years of experience in strategic HR executive and leadership roles, she has guided organizations through critical transformations including Ipsos, Deutsche Bank, American Express, JPMorgan Chase, and AIG. Debi is an ICF ACC credentialed coach and served on various boards including Minds Matter of NYC, Inc. and the Human Capital Advisory Committee at Ronald McDonald House of NYC. She holds a degree from Cornell University.

Claude Vuillieme

Claude is an EVP at Greenbacker and leads all legal activities at the firm, serving as General Counsel. She joined the company in 2022, before which she was Senior Fund Counsel at Global Infrastructure Partners, where she was responsible for overseeing all fund matters, including product design for equity and credit products, as well as negotiation with investors. Previously, Claude served as Deputy General Counsel at I Squared Capital (an infrastructure fund) for over seven years, overseeing general corporate and transactional matters, including fund formation, fundraising, co-investments, and compliance and regulatory activities. Claude began her career at Debevoise & Plimpton LLP in New York after graduating from Paris II Pantheon – ASSAS UNIVERSITY and completing her LLM at Columbia University School of Law, in New York.

Brandon Praznik

Brandon is the head of business development and is responsible for the execution of all capital raising initiatives across the business. He has over 10 years of experience in the financial services and alternative investment industries. This includes his position as a regional vice president for Strategic Capital, an open architecture wholesale distribution platform for public and private real estate investment programs, credit and lending programs, and other alternative investments, including the distribution of Greenbacker Renewable Energy Company’s public program. Prior to that, he served as the National Product Manager for energy products at Realty Capital Securities. Brandon began his career at Morgan Stanley, where he performed various roles within the distribution of their investment management platform. He holds a BA in Economics from Ohio Wesleyan University.

Benjamin Baker

Benjamin Baker has served as a Managing Partner and Chief Investment Officer of GDEV since June 2020. Prior to joining GDEV, Ben was a Managing Director of Delaware River Solar (DRS), one of the leading solar developers in New York State. He joined DRS in early 2018 during the company’s initial phase of early-stage development, with a focus on building the company’s balance sheet, refining the company’s strategy, implementing process and executing the company’s ~300 MW pipeline. During his time at DRS, he led all capital raising activity, securing over $100 million of committed facilities including development capital, construction capital, tax equity and term debt. He also led the firm’s M&A activities, managing the sale of ~125 MW of assets and the acquisition of over 50 MW. Prior to his time at DRS, he was a Vice President at Hudson Clean Energy Partners, where he was primarily responsible for leading origination and portfolio management within the Hudson Solar Infrastructure Fund. Prior to Hudson, he worked at GE Energy Financial Services, the energy investment business of GE Capital. Earlier in his career, he held positions in solar development and investment banking. Ben received his MBA from Columbia Business School and his BA from Columbia College.

David Foss

As Greenbacker's Treasurer and Head of Finance, David is responsible for managing the company's liquidity, financial forecasting, and valuation activities across the organization. He has 20 years of corporate finance and accounting experience in the renewable energy and financial services industries and in public accounting. Since joining the company in 2021, David has contributed to financial reporting to shareholders, including the net asset value process, building out internal budgeting and forecasting process, and supporting long-term strategic planning. Prior to joining the company, he was responsible for all corporate finance and accounting processes at a multi-national, publicly traded financial services company. David began his career in assurance at KPMG. He holds both a BA in Corporate Finance and Accounting and an MSA from Bentley University and is a certified public accountant in the state of Massachusetts.

Jeff Denovan

Jeff is the head of operations and is responsible for the project delivery and field operations teams. He has been with Greenbacker since 2018 and has managed the buildout of over 2 GW of solar/storage and wind projects across 35 states during his time at the company. Jeff has over 25 years in the construction industry with a focus on renewables for the last 18 years. He has held multiples roles ranging from project management to senior level operations in both distributed generation and utility level projects. Jeff also has held a masters electrician license in the state of Colorado, NABCEP PVIP Certification and also a Project Management Professional Certification (PMP). He is a graduate of the Pennsylvania State University.

Jared Porpiglia

Jared Porpiglia is a seasoned Procurement Executive with over 15 years of experience in procurement and supply chain management, primarily within the renewable energy and construction sectors. He has successfully executed the procurement of more than 30 gigawatts of solar and energy storage equipment, contributing to the growth and operational excellence of leading organizations.
Jared specializes in servant leadership, contract negotiations, strategic sourcing, process optimization, logistics and inventory management, and customer relationship management. He has built and led high-performing procurement teams at industry-leading companies including Arevon Energy, Cypress Creek Renewables, Clearway (NRG Renewables), and First Solar.

Vladimir Shifrin

Vlad is the head of asset management at Greenbacker and is responsible for financial and commercial function of the operating fleet. He has over 14 years of experience in the renewable energy industry in varied roles including asset management, financial planning and analysis, and finance. He has helped organizations such as Allianz Capital Partners, Cypress Creek Renewables and Brookfield Renewable create efficiencies in operating their business.
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