Our Team
The Stellar3 team has over 30 years’ experience in the design, development, implementation, and operation of a large range of critical waste treatment operations, primarily focusing on waste-to-energy and renewable energy solutions, and over 200 years’ combined experience in the management of global capacity building projects.
George Weiss CO-FOUNDER CHAIRMAN George is an accomplished venture capital entrepreneur, board member, attorney and management advisor with forty plus years of senior management and investing experience. He is the founder and CEO of Beechtree Capital LLC, a highly successful thirty plus year old private investment firm operating in New York, Silicon Valley and Arizona. |
Dan Nienhauser Co-Founder, President Dan Nienhauser has extensive leadership, business development, operations, finance, project, startup, and capacity building experience. Dan was the founding Executive Director Finance & Admin at The Earth Institute at Columbia University, founding Board Member of the Arizona Collaboratory, and co-founder of NW Direct in New York, a design and ideation firm. |
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Stephen Goff Lead scientist consultant Stephen provides high level technical consulting services to the waste-to-energy and waste management industries. He specializes in the evaluation and development of new technologies for recovering value from solid waste and components of the waste stream, such as plastics and organics. His expertise covers a wide range of technologies including gasification, pyrolysis, autoclaving, anaerobic digestion and mechanical processing. He also has extensive experience in the process analysis and optimization of waste-to-energy systems, including combustion, energy recovery, emissions control and ash processing and reuse. For over a decade Stephen was VP R&D for Covanta, responsible for providing the technical leadership and direction to the development or acquisition of new technologies to advance Covanta’s leadership in the waste-to-energy industry, and to support new business initiatives. |
Mayra Vera Chief of staff Mayra has over 16 years of senior experience in managing and overseeing the finances and operations of private and public, local, and international companies in the hospitality, legal, waste management and manufacturing sectors. She is a results-driven person with strong leadership skills to manage and improve the efficiency of an international organization’s operations. |