Leading the Way
Managing Director, DFJ Element
John has more than 25 years of experience making venture capital investments, managing and developing companies commercializing products in numerous cleantech markets. He has invested broadly across the cleantech sectors including energy storage, energy efficiency, smart grid, materials substitution, manufacturing efficiency, supply chain, cleaner fuels and solar. During his career, John has invested in 20 companies in the cleantech space, with 14 of those investments having realized an exit. He has served as the leader of four companies with all of these companies becoming leaders in their industry and having successful exits for the investors. Currently John is Managing Director of Accelergy Corporation responsible for overall operations of the company. Previously he was a Founder and Managing Director of Element Partners, a venture capital and private equity firm focused on cleantech investments. Prior to Element, John was a Partner at Advent International Corporation and managed the firm’s California office for 9 years.
Before Advent, Mr. Rockwell spent seven years at Materia Ventures Associates, investing in and managing early-stage companies that were commercializing advanced materials technologies. He served as CEO of Luxar Corporation, a manufacturer of CO2 lasers for the medical market, and as President of SSC, a manufacturer of high performance ceramic oxide materials used in superconductors, fuel cells, catalysts and other applications. He has held various positions at 3M Corporation in its Acquisitions and Business Development Department.
Mr. Rockwell received a BS in Business Administration from Michigan Technological University and an MBA from the Carlson School of Management at the University of Minnesota.
Co-Founder, Accelergy Corporation
Prior to founding Accelergy, William Chen was the Founder and CEO of OnePage, an enterprise software company that was acquired by Sybase. Before OnePage, Mr. Chen was one of the Founders of Billpoint, an Internet payments company that was acquired by eBay. He has held executive positions for Excite and Accenture and was in sales and marketing for IBM.
Mr. Chen serves on the Board of Directors of the AAMA (Asia America Multi-Technology Association in Silicon Valley) and was President in 2005. He is a Board Director of the Harvard Business School 4A Club and is on the Advisory Board of the Center for Entrepreneurship at the University of Florida. In 2003, the University of Florida honored him as the Clark Butler Entrepreneur of the Year.
Mr. Chen holds an MBA from Harvard Business School and a BS from the University of Florida.
General Partner, Technology Partners
Ira Ehrenpreis is a General Partner with Technology Partners. He has been with the firm since 1996. Mr. Ehrenpreis leads Technology Partners’ Cleantech investment practice, investing in energy technology, water technology and materials science opportunities. He is a recognized leader in both the venture capital industry and the Cleantech sector. In 2007, Details magazine named him one of the Top 50 Most Influential Men Under 45.
Mr. Ehrenpreis serves on the Board of the National Venture Capital Association (NVCA) and on the Board of the Western Association of Venture Capitalists (WAVC). He is the Co-Chairman of both the VCNetwork and the YVCA, non-profit organizations comprising more than 1,000 venture capitalists. In the Cleantech sector, Ira has served on several industry Boards, including the Clean-Tech Investor Summit (2005, 2006, 2007 and 2008 Conference Chairman), Cleantech Venture Network (Past Chairman), Energy Investors Forum (2004 Conference Chairman), Energy Venture Fair and California Climate Change Advisory Board.
Recently, Mr. Ehrenpreis was featured as the Keynote speaker at both the Cleantech Venture Forum VI and the Cleantech Venture Forum V. He has served on the Advisory Boards of the Southern California Tech Coast Alliance, Forum for Women Entrepreneurs (FEW) and the Comerica Venture Capital Advisory Board. He is an active leader at Stanford University, where his contributions have included teaching a course on Venture Capital and serving on the Board of Visitors of Stanford Law School. Mr. Ehrenpreis is a Contributor to Nimmer on Copyright, the leading copyright treatise.
Mr. Ehrenpreis received his JD/MBA from Stanford Graduate School of Business and Stanford Law School, where he was an Associate Editor of Stanford Law Review. He holds a BA from the University of California, Los Angeles, where he graduated Phi Beta Kappa and summa cum laude.
Partner, Altira Group LLC
Steve Foster is a Partner of Altira Group, a Denver-based investment firm focused on energy technology. He has more than 15 years of experience investing in venture capital and private equity in energy and information technology.
Prior to joining Altira Group in 2010, Mr. Foster spent over a decade at TPG and helped start TPG Ventures and TPG Growth. Prior to TPG, he was a partner at Crosspoint Venture Partners and worked in business development at 3Com and Hewlett Packard.
Mr. Foster currently serves on the boards of OPX Biotechnologies and Novinda. In addition, he is the Chairman of the Advisory Board for the Center for Innovation & Entrepreneurship at Santa Clara University.
Mr. Foster received a BS in Accounting from Santa Clara University and an MBA in Marketing from the Kellogg Graduate School of Management.
General Partner, Nth Power
Bryant Tong joined Nth Power in 2001 as a Managing Director. Previously, Mr. Tong was founder, President and CEO of Pacific Venture Capital (PVC), the venture capital arm of PG&E. At PVC, Mr. Tong led investments in the energy and telecommunications sectors.
Prior to joining PVC, Mr. Tong co-founded ReSourcePhoenix, a public company that pioneered the use of the Internet to help businesses outsource IT and accounting operations. As President and COO, he planned business strategy, led sales and marketing and was responsible for all day-to-day operations. Prior to ReSourcePhoenix, Mr. Tong was a member of the senior management group at Phoenix American. While at Phoenix American, Mr. Tong worked with Phoenix Growth Capital (PGC), which provided venture lease financing to over 200 venture capital-backed companies.
Mr. Tong served for four years as a senior member of the audit staff of Ernst and Young. He was responsible for the preparation of interim and year-end audits, SEC reporting requirements and internal control reviews. His clients included venture capital firms and large financial institutions.
Mr. Tong earned a BS in accounting from the University of California at Berkeley. Mr. Tong is a member of the American Institute of CPAs and a member of several industry advisory boards, including the Energy Venture Fair, the Chinese/US Energy Efficiency Alliance and the Golden Capital Network.
Vice President, Goldman, Sachs & Co.
Karen Han is a Vice President in Goldman Sachs’ Principal Investment Area in San Francisco, specializing in growth equity investing. Previously, Karen held engineering roles at CoroSoft, Slam Dunk Networks and Compaq Research Labs. Ms. Han serves on the board of Accelergy and Verimatrix and is actively involved with Limelight Networks and Benefitfocus.
Ms. Han earned a BS and MS in Computer Science from Stanford University.