STEM - Key Persons


Adam E. Daley

Job Titles:
  • Partner at Magnetar Capital LLC
Adam E. Daley is a Partner at Magnetar Capital LLC, Co-Head of Magnetar's Energy & Infrastructure Group and a member of Magnetar Capital's Management Committee and Investment Committee. Since joining Magnetar Capital at its inception, Mr. Daley has been focused primarily on the sourcing, execution and management of various investments in the energy, energy infrastructure and renewables sectors. Prior to joining Magnetar Capital, Mr. Daley was an investment banker at Citigroup's Global Corporate and Investment Bank. Mr. Daley also currently serves on the boards of directors of Lightstar Renewables LLC, PosiGen, Inc., Double Eagle Energy III, LLC, Vesper Energy Development LLC and DoublePoint Energy, LLC. Mr. Daley has a B.S. in Finance with High Honors from the University of Illinois.

Alan Russo

Job Titles:
  • Chief Revenue Officer
Alan Russo serves as Chief Revenue Officer at Stem, leading the expansion of Stem's markets in the U.S., Canada, Europe and Asia. Before joining Stem in 2018, he led sales and marketing for REC Solar, a wholly owned subsidiary of Duke Energy. Previously, Alan was Vice President of Strategic Accounts for Bloom Energy. During his 10-year tenure, he led the development and deployment of hundreds of fuel cell systems at critical facilities around the U.S. Earlier in his career, Alan also led Asia commercial operations for American Power Conversion, a Schneider Electric company, managing over 350 employees. Alan earned his B.S. in aerospace engineering from Boston University.

Anil Tammineedi

Job Titles:
  • Partner at the Angeleno Group
Anil Tammineedi is a Partner at the Angeleno Group, LLC, a leading global investment firm focused on high-growth clean energy and climate solutions companies, where he has been leading investments across a number of sectors, including sustainable mobility, energy storage, resource efficiency and smart infrastructure since 2008. Prior to joining the Angeleno Group, Mr. Tammineedi served in various product development and management roles related to semiconductors targeting communications, mobile and power management applications at Broadcom. Mr. Tammineedi also serves on the board of directors of Locana. He serves as a board observer at mPrest, Inc. Mr. Tammineedi has a M.S. from Iowa State University and an M.B.A. from the UCLA Anderson School of Management, where he serves as a Senior Faculty Advisor to the Business Creation Program and lectures on Impact Investing and Entrepreneurship. Mr. Tammineedi is also a Kauffman Fellow.

Bill Bush - CFO

Job Titles:
  • Chief Financial Officer
As Stem's Chief Financial Officer, Bill Bush manages the company's corporate and project financing efforts, guiding Stem from a startup to a $300 million-invested leader in the energy storage industry. Before joining Stem, Bill spent more than seven years as CFO of Borrego Solar Systems Inc., where he helped the company achieve 10 times growth and profitability. He was previously CFO of Solar Semiconductor Inc., a leading private, vertically integrated manufacturer and distributor of high-quality PV modules and systems with operations in India, helping it break $100 million in sales in less than 15 months. Bill has served as CFO for numerous high-growth solar, software, and online media companies, and was a founder of Buzzsaw.com, a spinoff of Autodesk. Prior to his work with Buzzsaw.com, Bill served as Corporate Controller for Autodesk, Inc. and worked for seven years in public accounting with Ernst & Young (EY) and PricewaterhouseCoopers. Bill holds a B.S. in business administration from UC Berkeley and is a Certified Public Accountant.

David Buzby - Chairman

Job Titles:
  • Chairman
David Buzby has been starting, building and investing in "impact" businesses for the last 33 years with an emphasis on renewable energy generation, energy storage/grid services, decarbonizing the built environment, recycling, carbon removal and lithium production. He currently also sits on the Board of Climate Transition Capital Acquisition I B.V. and Spring Valley Acquisition Corp. II. In the past, he has been an early investor and board member in Sunrun Inc.; a founding investor, Chairman and Chief Executive Officer, of SunEdison before selling to MEMC Electronic Materials, Inc.; and a founding investor, board member and chair of the audit committee of ValueClick before selling to Alliance Data Systems Corporation; as well as an investor and board member of numerous private companies. He has also held senior executive roles in numerous companies, including Chairman, Chief Executive Officer, Chief Operating Officer and Chief Financial Officer. Mr. Buzby received his M.B.A. from Harvard Business School in 1988 and a B.A. from Middlebury College in 1982.

Jane Woodward

Job Titles:
  • Founding Partner of MAP Energy
Jane Woodward is a Founding Partner of MAP Energy, LLC, a firm that focuses on energy investing and manages one of the largest private mineral portfolios in the U.S. She is a Managing Partner of WovenEarth Ventures, a boutique fund of funds focused on early-stage venture and niche project development. Ms. Woodward is also a member of the boards of directors of Fervo Energy, a geothermal project developer, Project Canary, an ESG data provider, and Ambient Fuels, a green hydrogen project developer. Ms. Woodward has also served as an adjunct professor of civil and environmental engineering at Stanford University since 1991 and has more than 30 years of developing and teaching energy classes. Ms. Woodward also serves on the Precourt Institute for Energy Advisory Council at Stanford University. Prior to founding MAP and teaching at Stanford, Ms. Woodward worked as an exploration geologist with ARCO Exploration Company and later as a petroleum engineering consultant to Stanford University's endowment. Ms. Woodward earned her B.A. in Geological Sciences from the University of California, Santa Barbara and her M.S. in Applied Earth Science and her M.B.A. from Stanford University.

John Carrington - CEO

Job Titles:
  • CEO
  • Director
  • Chief Executive Officer and a Member
John Carrington has served as our Chief Executive Officer and a member of our Board since 2013. Mr. Carrington has over 25 years of leadership experience at technology, energy, and industrial companies. Before joining Stem, Mr. Carrington served as CEO and director of MiaSolé, the world's largest CIGS-based thin film solar company. Prior to MiaSolé, he served as the Executive Vice President of Marketing and Business Development at First Solar. Before First Solar, he spent over 16 years at General Electric Company. Mr. Carrington earned his B.S. in Economics from the University of Colorado.

Kim Homenock - CHRO

Job Titles:
  • Chief People Officer
Kim Homenock serves as Stem's Chief People Officer. In this role, Kim oversees the global HR team with a focus on organizational development, global talent acquisition, training, diversity & inclusion, and enhancing the employee experience at Stem. Kim brings 20 years' experience in senior human resources leadership positions. Before joining Stem, Kim held senior positions at Amazon's Devices Software & Services and Transportation divisions as well as GE's Power Conversion and Renewables divisions. Kim earned a BA from Brunel University London.

Larsh Johnson - CTO

Job Titles:
  • Chief Technology Officer
As Chief Technology Officer, Larsh Johnson leads hardware and software engineering to meet the unique needs of Stem's C&I, utility and energy market customers. Prior to joining Stem, Larsh was Chief Technology Officer at Siemens Digital Grid, where he led technology development teams on products spanning from consumer metering, demand response and analytics to control center software and grid automation. He joined Siemens via the acquisition of eMeter, a Bay Area software company of which he was a co-founder and responsible for innovation and development of meter data management, analytics and advanced smart grid applications. Prior to eMeter, he co-founded CellNet Data Systems, a pioneer in wireless networks for smart metering and distribution automation and now a unit of Landis+Gyr. Larsh was a founding member of the Department of Energy's Gridwise Architecture Council (GWAC) and remains a member emeritus. He earned his B.S. and an M.S. in mechanical engineering from Stanford University.

Laura D'Andrea Tyson

Laura D'Andrea Tyson is a Distinguished Professor of the Graduate School and Professor Emeritus at the Haas School of Business at the University of California, Berkeley. She has also been Chair of the Board of Trustees and Steering Committee Member of the Blum Center for Developing Economies since 2007, and is the Faculty Director of the Berkeley Haas Blockchain Initiative and the co-Faculty Director of the Sustainable and Impact Finance Initiative at the Haas School of Business since 2019. Dr. Tyson also serves as a director of Lexmark International Inc. and Apex Swiss Holdings, SARL, and serves in numerous other advisory roles, such as Senior Advisor to the Rock Creek Group and to the APAX Global Partners Fund and advisory board member for APAX Global Impact and the Angeleno Group. Dr. Tyson was a member of President Clinton's cabinet from 1993 to 1996 and was the first woman to serve in the positions of Chair of the President's Council of Economic Advisors, and Director of the White House National Economic Council. Dr. Tyson received her B.A. from Smith College and holds a Ph.D. in Economics from the Massachusetts Institute of Technology.

Matt Tappin - President

Job Titles:
  • President
  • President, Asset Management Division
Matt Tappin serves as Stem's President, Asset Management Division. In this role, Matt will lead the development and execution of the company's inorganic growth strategy, including mergers and acquisitions (M&A), investments, joint ventures, and related matters. Matt brings significant experience in developing corporate strategy related to the energy transition and executing those plans to drive growth. Prior to joining Stem, he held senior corporate development positions at Royal Dutch Shell, where he focused on investments in the electricity sector, and Centrica, where he led corporate development for the distributed energy business globally. In these roles, he combined strategy development with transaction execution, completing a range of corporate acquisitions, investments, partnerships, and new business initiatives. Earlier in his career, he was an investment banker in Lazard's Power, Energy & Infrastructure Group and a corporate attorney at Simpson Thacher & Bartlett. Matt earned his J.D. from Duke University School of Law and B.A. from Washington University in St. Louis.

Michael C. Morgan

Michael C. Morgan co-founded Triangle Peak Partners, LP, a multi-strategy asset management firm focused on venture capital and growth equity, and he currently serves as its Chairman. Mr. Morgan also serves as President and Chief Executive Officer of Portcullis Partners, LP, a private investment partnership and limited partner of Triangle Peak Partners. Mr. Morgan also currently serves as the lead director of Kinder Morgan, Inc., one of North America's largest energy infrastructure companies, where he previously headed corporate development. Mr. Morgan also serves on the board of directors of Sunnova Energy International, Inc. He is a frequent volunteer at Stanford University, and currently serves as co-chair of the Precourt Energy Institute Advisory Council and on several other advisory committees. Mr. Morgan earned his B.A. in Economics and M.A. in Sociology from Stanford University and his M.B.A. from Harvard Business School.

Michael Carlson - COO

Job Titles:
  • Chief Operating Officer
As Stem's Chief Operating Officer, Michael Carlson manages the company's day-to-day operations, program execution, deployment, and manufacturing. A global business executive, Michael brings 30 years of experience in finance, technology, and operations management across multiple industries and specifically 20 years of energy expertise in leveraging technology to drive value through business transformation and grid modernization. Prior to joining Stem, Michael served as Vice President at Koch Engineered Solutions, where he defined and executed the Electric Technologies strategy with an emphasis on Operational Technology software solutions. He also spent more than 12 years at General Electric, Siemens, and ABB, where he was responsible for global software strategies and solutions, product management, and delivery services. Across these roles, he transformed software solutions using advanced technologies to digitalize operations for the energy grid. Michael holds a B.S. in Business Administration with emphases in accounting, management, and computer science from Union College and an MBA in Finance from Pepperdine University.

Mr. Ira Birns

Job Titles:
  • Executive Vice President and Chief Financial Officer of World Kinect Corporation
Mr. Ira Birns is the Executive Vice President and Chief Financial Officer of World Kinect Corporation (f/k/a World Fuel Services Corporation), a Fortune 100 global energy management company providing energy procurement and related services, a position he has held since 2007. For nearly two decades prior to that, Mr. Birns held various leadership positions, including Vice President and Treasurer at Arrow Electronics, Inc., a Fortune 250 global provider of technology products, services and solutions. Mr. Birns has extensive experience in management, finance and accounting from serving as a senior finance executive at large publicly-traded multinational corporations, as well as significant experience in mergers & acquisitions, capital markets, investor relations and in the energy sector, including renewable fuels and power. Mr. Birns holds a Bachelor of Business Administration in Public Accounting from Hofstra University and is a Certified Public Accountant and Certified Treasury Professional.

Prakesh Patel - Chief Strategy Officer

Job Titles:
  • Chief Strategy Officer
Prakesh Patel has been Chief Strategy Officer for Stem since 2020. Previously, Mr. Patel was Stem's Vice President of Capital Markets and Strategy from 2013 to 2020, in which role he led Stem's financial strategy and supported corporate fundraising initiatives, structuring its first project finance facilities and helping to secure more than $200 million in equity financing for Stem. Mr. Patel has spent his career financing technology and energy ventures at the cross section of multiple industries. Before joining Stem, from 2010 to 2013, he served on the investment team at Angeleno Group, an energy and natural resources-focused private equity firm, during which time he led their investment in Stem. Previously, Mr. Patel built and managed a portfolio of private equity investments at New Bridge Investments from 2008 to 2010 and Deutsche Bank from 2005 to 2008. Mr. Patel has a B.A. from UC Berkeley and an M.B.A. from Yale University.

Robert Schaefer - President

Job Titles:
  • President
  • President, Behind - the - Meter Division
Robert Schaefer serves as Stem's President, Behind-the-Meter Division. Previously, he was the CEO and co-founder of AlsoEnergy where he led the company to become the leading independent global provider of solar asset performance monitoring and control systems. Throughout his 40-year career, Robert has demonstrated broad experience across management, engineering, and operational roles. Robert held various positions including C.O.O., V.P. Engineering, and Chief Executive Officer where he oversaw the launch of three generations of computer data storage products manufactured in China, six generations of computer tape products manufactured in the U.S., and established sales and partnering opportunities in Asia and Europe. He holds a Bachelor of Science in Electrical Engineering from M.I.T and a Master of Science in Control Systems from the University of Colorado, Boulder. In addition, Robert is a Professional Engineer in the State of Colorado. He has discovered and developed techniques to reduce costs leading to six patents in the field of robotics and one in renewable energy systems.

Saul Laureles - Chief Legal Officer, Secretary

Job Titles:
  • Chief Legal Officer
  • Corporate Secretary
  • Secretary
Saul Laureles serves as Stem's Chief Legal Officer and Corporate Secretary. In this role, Saul leads the company's global legal function, including corporate governance, securities and mergers & acquisitions (M&A), as well as environmental, social, and governance compliance. Saul brings more than 20 years of legal and strategic business experience including handling complex legal and financial matters and advising executives and board members. Before joining Stem, Saul served as Director, Corporate Legal Affairs and Assistant Corporate Secretary at Schlumberger Limited, the world's leading oilfield services company, which he joined in 2007. Saul earned his J.D. from the University of Michigan Law School and B.A. from the University of Chicago.