About Us
Sean Halloran, CTO/Co-Founder
Sean Halloran is the co-founder of NexESS Analytics and a veteran of energy projects around the world. Mr. Halloran has served in a variety of engineering and leadership positions over his career, from a successful thin-film solar startup that was eventually acquired by General Electric to a global energy services company. He has hands-on knowledge of engineering complex products, systems, and transactions from energy storage applications to technology M&A. He has led teams on most continents, from one-off evaluations to multi-year campaigns and is comfortable in the field and in the boardroom.
Todd Tolliver, CEO/Co-Founder
Todd Tolliver is an energy industry professional with a combined experience of over 18 years in the fields of photovoltaics, energy storage, and component manufacturing. Mr. Tolliver has managed projects with scopes including research and development, process scale-up, product manufacturing, project finance due diligence, and technical advisory services. More recently he has led efforts in support of the financing for solar plus storage, value stacking case studies to add energy storage to existing renewable assets and provided technical support for procurement of an energy storage systems for integration with solar. In addition, he has experience in renewable energy and energy storage due diligence, including product design and performance, supporting more than 2 GW of solar projects and more than 11 GWh of energy storage projects. Prior to starting NexESS Analytics, he developed and led the ICF independent engineering and owner’s advisory energy storage practice.