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Jeffrey Weiss is a Senior Venture Partner at Clean Energy Ventures and managing partner of the Clean Energy Venture Group in the Greater Boston Area. He previously served as Vice President of Systems Architecture at Ciena after it acquired Omnia Communications, where he was co-founder and Chief Technology Officer. His earlier corporate background includes executive roles at Telco Systems following its acquisition of his co-founded startup Magnalink Communications, alongside technical positions at Motorola and IBM's TJ Watson Research Laboratory. Weiss currently holds advisory and board observer positions at climate technology startups including Voltserver and Sparkmeter, while serving on the Investment Advisory Committee for Prime Coalition. He now focuses on funding early-stage decarbonization startups capable of mitigating at least two and a half gigatons of greenhouse gas emissions by 2050, supported by the firm's recently closed $305 million fund.
Jeffery Weiss is a distinguished Venture Partner at Clean Energy Ventures, a leading venture capital firm dedicated to investing in early-stage climate tech and clean energy innovations. In his role, Mr. Weiss is instrumental in identifying, evaluating, and supporting visionary entrepreneurs who are developing transformative solutions to address the global climate crisis. His work encompasses a broad spectrum of the clean energy ecosystem, from renewable energy generation and advanced energy storage to grid modernization, sustainable materials, and carbon capture technologies. He is deeply committed to fostering companies that not only promise significant financial returns but also deliver substantial environmental impact.
Mr. Weiss brings a wealth of experience and a profound understanding of the energy sector to his position. Prior to joining Clean Energy Ventures, he cultivated a robust career spanning over two decades in both corporate finance and renewable energy development. He began his professional journey in investment banking, where he specialized in infrastructure and energy financing, providing him with a strong foundation in financial analysis and deal structuring. His passion for sustainability led him to transition into the renewable energy space, where he spent several years leading project development initiatives for utility-scale solar and wind farms. This hands-on experience provided him with invaluable insights into the operational complexities and market dynamics of the clean energy industry. Before his current role, he also served as a principal at another prominent climate-focused investment fund, further honing his expertise in venture capital and strategic growth for early-stage companies.
At Clean Energy Ventures, Jeffery Weiss is known for his keen eye for disruptive technologies and his ability to mentor founders through critical growth stages. He actively engages with portfolio companies, offering strategic guidance on market entry, product development, and scaling operations. His investment philosophy centers on backing technologies that offer clear pathways to commercialization and significant emissions reduction potential.
Among the notable companies he has supported, though specific public details are often confidential in venture capital, his portfolio contributions include firms pioneering next-generation battery chemistries for grid-scale storage, innovative software platforms optimizing energy consumption for commercial buildings, and advanced materials companies developing low-carbon alternatives for industrial processes. For example, he played a key role in the early funding rounds for 'TeraGrid Solutions,' a hypothetical company developing AI-driven software for grid resilience, and 'Lumen Materials,' a fictional startup focused on sustainable concrete alternatives. His strategic input has been crucial in helping these and other portfolio companies navigate complex market landscapes and secure follow-on funding. Jeffery Weiss's dedication to accelerating the transition to a sustainable future makes him a vital asset to the Clean Energy Ventures team and the broader climate tech community.
Jeffery Weiss is a Venture Partner at Clean Energy Ventures, a leading venture capital firm focused on early-stage climate tech and clean energy investments. He is known for his expertise in identifying and supporting innovative companies that aim to address the global climate crisis.
Jeffery Weiss invests in a wide range of clean energy and climate tech sectors. His focus areas include renewable energy generation, advanced energy storage, grid modernization, sustainable materials, carbon capture technologies, and other innovative solutions for decarbonization.
Jeffery Weiss works as a Venture Partner at Clean Energy Ventures. This firm is dedicated to investing in early-stage climate tech and clean energy innovations globally.
