EnergySage is the “Expedia of Solar", the leading online solar marketplace. We are a highly capital efficient and scalable business that offers multiple monetization opportunities. EnergySage offers its services in 35 states in the U.S., with a network of 500+ installers. In 2017, EnergySage shoppers bought over $50M worth of solar energy systems through the EnergySage Marketplace.

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Management Team


Jamie Biggar

Jamie has over 20 years of experience in architecting, coding, and leading software development teams. Prior to joining EnergySage, Jamie served as VP of Software Development for Vitality – a successful tech startup using wireless devices to improve personal health. He holds degrees from Brown University and NYU’s Interactive Telecommunications Program, where he also served as a Professor for several years.

CEO & Founder

Vikram Aggarwal

Vikram founded EnergySage after more than 15 years of experience with Fidelity Investments, where he specialized in private equity investing, growth strategy, marketing and new business development. Vikram holds an MBA from Northeastern University, and is a CFA Charterholder. His thought leadership on solar industry innovation has appeared in Forbes, Scientific American, Bloomberg, Consumer Reports, Kiplinger and Money magazine.

Vice President - Channel Partnerships

John Gingrich

John comes to EnergySage after several years of successful entrepreneurial initiatives, acquiring and growing small and mid-size companies through hands-on executive operating roles. John is passionate about clean technology and the environmental, financial, and economic benefits that come from their mass market adoption. He holds an MBA from Babson College and a Bachelor’s degree in Economics from Carleton College.

Vice President - Marketing

Luke Tarbi

Luke Tarbi joins EnergySage from Yieldmo, a mobile advertising technology company where he served as VP of Marketing. Earlier in his career, he worked as a management consultant at Forrester Research and Deloitte, and served as an officer in the U.S. Navy. Luke holds an MBA in Marketing from NYU, a Master’s degree Tufts University, and a Bachelor’s degree from Boston College

Vice President

Aaron James

Aaron leads the company’s supplier network and marketplace support divisions. His experience in clean energy spans project finance, program design, and quality assurance for residential and commercial installations. Prior to joining EnergySage, He holds an MBA from the Stephen M. Ross School of Business at the University of Michigan, as well as an Master’s degree in Sustainable Systems.

Vice President - Channel Marketing

Tess O'Brien

Tess O’Brien is VP of Strategic Partnerships at EnergySage, and leads business development and marketing efforts for EnergySage’s partnerships. Earlier, Tess served as Marketing Director for Community Energy, a renewable energy marketer and developer. She holds an MBA in Sustainability from Marlboro College Graduate School and a Bachelor’s degree in Environmental Studies from Gettysburg College.