Our senior leadership team embodies >100 years experience building and scaling the solar energy industry. We’re using that experience at Caelux to accelerate the future of solar.
Scott Graybeal
CEO
Scott Graybeal is a veteran executive who led the Energy Solutions Segment at Flex Ltd (NASDAQ: FLEX), a $2B division within the company serving the solar, energy storage, and LED lighting markets. Under his leadership, Flex Energy became the third largest producer of PV modules outside of mainland China, and patented several key solar manufacturing innovations. Scott’s career spans several industries from construction tech to solar to semiconductors. Before joining Caelux, Scott was COO of Veev Group & CEO of Veev Build and has held key leadership roles at Intevac, Amonix, Oerlikon Solar, Veeco Instruments, Applied Materials, and General Electric.
Scott has guest lectured on renewables and entrepreneurship at Carnegie Mellon and Georgetown. He served with distinction as a nuclear submarine officer and is a certified nuclear engineering officer by the Departments of the Navy and Energy. Scott earned his MBA from Thunderbird School of Global Management and his BS in Chemistry from UC San Diego.
John Iannelli
President & Founder
John Iannelli is an experienced technology executive who started Caelux in 2014 with the goal of improving the performance of crystalline silicon modules using nanomaterials. Prior to founding Caelux, he worked in venture capital at Khosla Ventures focusing on investments in renewable energy generation and storage, smart grid, and solid-state lighting. He has served as the Corporate Chief Technology Officer and Solar General Manager at Emcore Corporation, and began his career as a Research Scientist, and later Engineering Director at Ortel Corporation, Agere Systems, and Lucent Technologies.
John has served as a visiting faculty member at Caltech and has authored numerous scientific research papers, patents, and industry review articles on semiconductor device physics, laser and optical technologies, and solar energy. John received his PhD from the California Institute of Technology, his MBA from USC’s Marshall School of Business and his BS from Rensselaer Polytechnic Institute.
Charlie Hasselbrink
CTO
Ernest “Charlie” Hasselbrink led Global Quality, Reliability R&D, and Performance R&D during his 9 years at Sunpower (now Maxeon Solar). His Reliability R&D team invented several methods to speed R&D cycles of learning, including a patented method to accelerate UV testing by a factor of 100,000. He and his team compiled the technical due diligence for the sale of the largest single permitted solar power plant site in the United States at the time, to Berkshire Hathaway Energy. A champion for reliability in the PV industry, he was a plenary speaker for Reliability at the IEEE 39th PV Specialists Conference (PVSC) and was Area Chair for Reliability for PVSC 42.
Charlie’s career includes roles as VP Reliability and Quality at Mainspring Energy, and VP of Front-End Technology Development at Sila Nanotechnologies. Charlie has been a tenure-track professor of mechanical engineering at the University of Michigan (Ann Arbor) and a post-doctoral researcher at Sandia National Labs. He earned his Ph.D. from Stanford University and his B.S. in Mechanical Engineering from the University of Houston. His 50 journal papers, conference papers and patents have been cited >4000 times.
Jeremy Ferrell
CFO
Jeremy Ferrell has more than 25 years of finance and operations leadership experience, with expertise in venture capital; mergers and acquisitions; due diligence; initial public offerings; strategic alliance negotiation; and financial planning and reporting. He was most recently CFO at Miku, Inc, a privately held consumer hardware and tele-health company, where he managed a successful seed financing round and led Miku’s transition from its parent to an independent company. Previously, he founded a Fractional CFO Services firm, where he served as CFO for various life sciences and technology companies, including Singular Genomics, Inc., Aspen Neuroscience, Inc., and Hyduro, Inc.
Mr. Ferrell received his Bachelor of Science degree in Accountancy from Liberty University and his Master of Business Administration degree in International Finance from the Thunderbird School of Global Management.
Aaron Thurlow
Chief Commercial Officer
Aaron Thurlow is an experienced global leader and innovator in the clean energy sector, building and scaling businesses in the solar and renewable energy industry over the past two decades. As an executive focused on commercialization, he has led teams to drive revenue growth and market expansion, established leading brands, and created and launched new technology categories.
His work has been transformational at both start-ups and publicly traded companies; including SunPower, National Semiconductor (now Texas Instruments), Silevo (now Tesla), Omnidian, and LONGi Solar amongst others. Aaron has scaled revenue organically from zero to hundreds of millions. In addition, he founded SolFuture, LLC a consulting firm providing advisory and management services to help companies grow and thrive in the cleantech market.
Aaron is passionate about fostering innovation and collaboration in the clean energy transition. He serves in advisory roles, regularly shares his insights and knowledge at conferences and has served on industry association boards.
Jeff Layman
Chief Legal Officer
Jeff Layman has over two decades of legal and executive experience advising organizations through complex energy transactions and international strategic initiatives. Most recently, he was the Acting Chief Counsel of the Department of Energy’s Office of Energy Dominance Financing (formerly, the Loan Programs Office), where he served as trusted advisor to senior leadership and led a team of attorneys supporting innovative financings across a broad spectrum of energy projects. Prior to his role at the DOE, he served as the deputy general counsel at Venture Global in Arlington, Virginia and China General Counsel for the Boeing Corporation in Beijing, where he led the company’s China legal affairs function.
Prior to Boeing, Jeff was a partner and China chief representative of the Beijing office of Baker Botts where he was responsible for managing energy transactions across the value chain, including M&A, direct investments, restructurings, financings and private equity transactions.
Jeff earned his Bachelor of Arts from Claremont McKenna College and Juris Doctorate from the UC Law San Francisco.
Eric Kuo
VP & General Manager
Asia
With nearly two decades of experience in the renewable energy industry, Eric Kuo is a seasoned executive known for his expertise in strategic sourcing, supply chain leadership, product innovation, and regional management. He began his career at Motech Industries as a Strategic Sourcing Lead, where he developed robust supplier networks, optimized costs, and ensured quality in a fast-paced, competitive market.
At JA Solar, Eric led strategic material sourcing, overseeing global procurement strategies, mitigating risks, and driving supply chain resilience to maintain the company’s competitive advantage internationally. His role expanded further as Senior Director of Sourcing at Flex, where he managed multinational teams and complex sourcing operations, integrating sustainability initiatives and digital transformation into the procurement function.
Transitioning into product management, Eric served as Director of Product Management at Nextracker, guiding the end-to-end lifecycle of advanced solar tracking technologies. He effectively bridged engineering, marketing, and customer engagement to deliver innovative renewable energy solutions aligned with market trends.
Currently, Eric is Vice President and General Manager, Asia at Caelux, where he leads regional strategy and operations across Asia’s burgeoning renewable energy markets. In this role, he drives business growth, fosters strategic partnerships, and champions sustainable innovation to advance Caelux’s mission of redefining solar energy technologies.
Vish Iyer
Managing Director
India & Middle East
Vish Iyer is a seasoned clean energy executive with over 20 years of experience across solar, energy storage, and EV infrastructure. Before joining Caelux, he served as CEO of Cypress Renewables and earlier as Global Chief Commercial Officer and founding executive at Jakson Green, where he secured over $600M in strategic joint ventures and 1GW of renewable IPP assets. At Jakson, Vish led the company’s expansion into a $300Mn topline business spanning solar and green hydrogen EPC, electrolyzer assembly, renewable IPP platforms, and Power-to-X solutions.
Vish has held leadership roles at Siemens, Larsen & Toubro, Mahindra Partners, and Sterling and Wilson, where he scaled renewable energy businesses across India, the Middle East, and Southeast Asia. He also founded a cleantech advisory firm in Singapore, guiding strategic investments in emerging energy technologies.
A Rising Star Finalist at the S&P Global Platts Global Energy Awards, Vish holds a BE in Electrical Engineering from the University of Mumbai and an MBA from Purdue University.
