Committed to Excellence

8minute is known for delivering solar energy on time, on price and on projected performance. Engineering expertise, commitment to innovation, and rigorous processes are central to our success. We were the first solar developer to beat fossil fuel prices, and are now at the forefront of storage innovation, overcoming long-standing challenges on energy reliability and resiliency.

We’re a team of 100 professionals dedicated to greenfield development, with deep expertise across the project lifecycle, including solar photovoltaic (PV) and storage technologies, plant engineering and optimization, utility resource planning, land assembly, land-use permitting and entitlement, structured finance and transactions. Together, we optimize each and every project to drive down the costs and expand the market for clean, affordable energy.

 

 

Executive Team

Tom Buttgenbach, Ph.D.

Founder & CEO

Tom founded 8minute Solar Energy in 2009 with a vision for making solar-plus-storage the lowest cost, most reliable form of energy on the planet – even when the sun isn’t shining. With more than 20 years of executive management experience and a scientific and analytical approach that drives the company, Tom has transformed 8minute from a boutique developer to a nationwide leader in solar-plus-storage that is shaping the future of energy. Through a relentless focus on technology, innovation, and scale, the company’s best-in-class team is setting new records and leading the clean energy transition making his vision a reality. Today, 8minute has more than 18 GW of solar and 24 GWh of storage projects under development, enough to provide clean and reliable power for 20 million Americans – day and night, for less than the cost of fossil fuels.

Throughout the course of his career, Tom has led transactions totaling over $10 billion in power purchase agreements and project finance deals. Prior to founding 8minute, Tom’s professional life featured tenures in entrepreneurship, real estate development and investment banking, as well as a management consultant with McKinsey & Company in energy and technology sectors.

Tom earned his undergraduate degree in Physics and Mathematics from the University of Cologne in Germany and a Ph.D. in Physics and Astronomy from the California Institute of Technology (Caltech), which he attended as a Fulbright Scholar.

Josh Goldstein

Chief Operating Officer and Head of Capital Markets

Josh Goldstein

Chief Operating Officer and Head of Capital Markets

A recognized leader in the solar industry, Josh Goldstein has over 11 years of experience in utility-scale solar development and 20 years of experience in finance, executive management, complex transactions, and capital markets. For 8minute Solar Energy, Josh is focused on the company’s financing strategy, capital markets activities, and multiple aspects of its development operations. Josh is also a Board Director for 8minute and previously held the company’s CFO position. Prior to joining 8minute, he served in various financial roles at Recurrent Energy, including SVP of Finance & Capital Markets. During his previous tenure in the Public Power Group at Morgan Stanley, Josh executed more than $4 billion of financings for generation and transmission assets, as well as highly profitable long-term gas supply arrangements. Over the course of his solar career, Josh has collectively built and run two industry-leading finance teams that have raised over $10 billion across all parts of the capital structure while financing 2.3 GW of utility-scale solar power plants. He holds a bachelor’s degree from the University of Michigan and an MBA from Harvard Business School.

Ross Trenary

Chief Financial Officer

Ross Trenary

Chief Financial Officer

Ross’ expertise is driven by more than 10 years of experience leading corporate finance, investor relations and accounting activities in the renewables sector. Prior to joining the 8minute Solar Energy team, Ross was Vice President of Corporate Finance at Clearway Energy Group, where he was responsible for the accounting, treasury and finance functions and played a lead role in establishing and managing these functions through Clearway’s transition from NRG Energy ownership to Global Infrastructure Partners (GIP). He previously served in various roles for NRG’s renewables business, beginning in business development with a focus on South Africa before taking over financial planning and reporting. Before NRG, Ross spent seven years in ascending finance roles within BrightSource Energy, a developer of solar thermal technology and projects, including a tenure leading financial operations at its Israeli technology subsidiary in Jerusalem. Ross holds both a bachelor’s degree and an MBA from the Haas School of Business at UC Berkeley.

Julia Perrier, Esq

Chief Commercial Officer

Julia Perrier, Esq

Chief Commercial Officer

Julia has nearly a decade of experience in renewable energy project financing, with a cumulative closed transaction value of more than $12 billion. For 8minute Julia co-manages the project finance team and oversees all commercial transactions and legal operations. Prior to 8minute, Julia served as a project finance attorney for Chadbourne & Parke (which has since merged with Norton Rose Fulbright), overseeing project finance and M&A transactions for 3.2 GW of solar, wind, and combined-cycle gas turbine (CCGT) plants on behalf of lenders, tax equity investors, sponsors and developers. Julia earned a bachelor’s degree in Finance from the Leonard N. Stern School of Business at New York University, and a law degree from Cornell Law School.

Sean Kiernan

Chief Development Officer

Sean Kiernan

Chief Development Officer

Sean’s leadership role with 8minute Solar Energy is guided by more than 20 years of experience in developing, financing and constructing renewable and thermal power generation facilities. Throughout his career, Sean has held senior leadership roles at several industry-leading companies and played a critical role in the successful deployment of over 5 GW of projects. As Vice President of Development for Fotowatio Renewable Ventures, Sean led the development of a portfolio of solar projects across key U.S. markets, including California and Nevada. Following the acquisition of Fotowatio Renewable Ventures by SunEdison, he directed that organization’s utility-scale business unit, including grid-connected energy storage, which developed and executed of dozens of projects across the country. Sean then served as Vice President and General Manager at Engie Storage (formerly Green Charge Networks), where he and his team developed, financed and constructed one of the nation’s first grid-connected solar-plus-storage projects. Sean holds a bachelor’s degree in Geography from Radford University and a Graduate Certificate in Environmental Management from Tufts University.

Stephanie Perry

Senior Vice President, Engineering & Transactions

Stephanie Perry

Senior Vice President, Engineering & Transactions

Stephanie leads Engineering, Procurement, and Operations teams at 8minute Solar Energy. Stephanie has 15 years of experience working in the renewable energy industry, technology evaluation, system engineering, solar project development, and commercial contract negotiations.  Prior to joining 8minute, Stephanie was Senior Director of Procurement and Origination at Recurrent Energy.  Over her time in the solar industry, she has led teams, responsible for 3 GW of domestic and international solar EPC, equipment, and O&M contracts and 1.5 MW of PPA transactions.

Prior to solar, Stephanie spent four years at Northrop Grumman, working as a launch and operations system engineer in the space technology division.  She also worked as an investment associate at Chevron Technology Ventures and CalCEF Angel Fund, focused on solar and renewable energy technology venture investing.  She holds a B.S. in Mechanical Engineering from Notre Dame, an M.S. in Aeronautical Engineering from USC, and an M.B.A from the Haas School of Business at UC Berkeley.

Benjamin New

Senior Vice President, EPC

Benjamin New

Senior Vice President, EPC

Ben has two decades of expertise in construction project leadership for utility- and commercial-scale projects. During his career in the renewable energy industry, he has built more than 2.5 GW of utility-scale solar projects across major markets including California, Texas and Arizona. Prior to joining 8minute Solar Energy, Ben served as the Senior Director of Construction Management at Recurrent Energy, where he was responsible for the successful construction and interconnection of utility-scale projects in the company’s U.S. portfolio. He also previously worked in engineering and project management roles for construction firms like Rudolph and Sletten and Lovett Silverman. Ben earned a bachelor’s degree in Building Science from Auburn University and an MBA from the University of Denver.

Deborah Builder

Senior Vice President, Development

Deborah Builder

Senior Vice President, Development

Deborah has spent the last decade in the renewable energy sector concentrated on the development of utility-scale solar projects, and has over six years of experience successfully managing land development projects. Prior to joining 8minute Solar Energy, Deborah was a Development Manager for WorleyParsons, where she was responsible for helping to develop and permit over 450 MW of utility-scale solar projects on private, state, and Federal lands. She was also previously the Senior Forward Planner for America’s largest residential homebuilder where she successfully obtained land entitlements and permits on aggressive timelines. Deborah spent over 3 years producing environmental documents in compliance with the California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA). Deborah holds a B.S. in biology and a M.S. in environmental biology from Ohio University, as well as a J.D. from the Thomas Jefferson School of Law.

8minute is the largest independent solar power developer in the United States