Investor Relations

Board of Directors

Daryl Dulaney

Daryl Dulaney is a corporate leader with more than 30 years of experience. Before retiring in the fall of 2014, he served as CEO of Siemens Infrastructure and Cities Sector for North America, a provider of sustainable technologies for metropolitan areas and their infrastructures. During that time, he also served as CEO of Siemens Industry, Inc., a position he held since October 2009. His career at Siemens Industry, Inc., spanned more than 18 years in various executive leadership positions. Prior to his time at Siemens, Dulaney served in various management positions for suppliers of building automation and process control products. Dulaney received a master’s degree in Business Administration from the Kellogg School of Management at Northwestern University and a bachelor’s degree in Architecture from Ohio State University.
Mark Ascolese
Director, President and CEO

A proven business leader and strategist, Mark A. Ascolese was named president and CEO of Active Power in September 2013. Ascolese is an electrical infrastructure and energy management expert with more than 40 years of experience serving a variety of mission critical and energy markets including data centers.

Prior to joining Active Power, Ascolese first served as CEO and then as board chairman of Power Analytics, an electrical infrastructure enterprise software firm. He served as president at Powerware Corporation (now part of Eaton Corp.) and in senior management positions at General Electric.

From 2000-2002, Ascolese served as senior vice president of Business Development at Active Power during the company’s initial public offering. In this role, he led the efforts in securing multimillion dollar distribution and development agreements with key market players.

Ascolese earned a bachelor’s of Science in Commerce from the University of Louisville.

Stephen Clearman

Stephen Clearman was appointed to Active Power board of directors in June 2012. Mr. Clearman currently serves as managing partner and co-founder of Kinderhook Partners, LP. Prior to co-founding Kinderhook Partners in 2003, Mr. Clearman co-founded Geocapital Partners, a leading venture capital firm that managed more than $500 million in a series of partnerships in North America and Europe. Prior to his work at Geocapital Partners, Mr. Clearman spent four years at Adler and Company responsible for the origination and management of numerous venture capital investments. In addition to these stints, Mr. Clearman has been a director of a number of public and privately held companies.

Mr. Clearman received a bachelor’s degree in Mathematics from Haverford College, a master’s of Science in Electrical Engineering from Columbia University, and a law degree from Harvard University.

James E. deVenny, III

James E. deVenny III has served as a member of our board of directors since March 2008. From 1999 until March 2008, Mr. deVenny served as the co-founder, president and chief executive officer of Dataside LLC, a Texas-based provider of enterprise data center space and managed network services. Mr. deVenny is now an independent consultant though his business JD Investments. Prior to founding Dataside, Mr. deVenny co-founded Computex Support Systems where he was involved in the design and development of mission critical data centers and telecommunications sites for 15 years. Prior to this, he spent five years as vice president of Sales and Marketing for International Power Machines, a manufacturer of uninterruptible power supply systems. Mr. deVenny also serves on the boards of Lumenate, a private technology consulting services company. He holds a bachelor’s of science in Journalism and Communications from the University of Florida.
Robert Greenberg

Robert Greenberg has served as a member of our Board of Directors since March 2009. Since January 2009, Mr. Greenberg has been the Chief Information Officer and Vice President for Agco Corporation, a global manufacturer and distributor of agricultural equipment. Prior to joining Agco Corporation, Mr. Greenberg was Vice President and Chief Information Officer for 5 years with Nissan Americas, the US subsidiary of Nissan Motor Ltd, a global automotive manufacturer. Mr Greenberg also served in executive and CIO capacities over 20 years with Avaya, Inc., a global enterprise communications provider, Dell Computer, Inc and Exxon Mobil, including time spent in Asia Pacific. Mr. Greenberg holds both a Bachelor of Science and Masters of Engineering degrees in Operations Science and Industrial Engineering from Cornell University and an MBA in Finance from the University of Maryland.
Peter Gross

Peter Gross has more than 30 years’ experience in the engineering and design of power systems for applications in data centers, trading floors, command and control centers, and telecommunication and broadcasting facilities. He has led the Mission Critical Systems group at Bloom Energy Corporation, a leading manufacturer of solid-oxide fuel cells, since March 2012.

Prior to joining Bloom Energy, from January 2008 through February 2012, Mr. Gross was the Managing Partner for HP’s Carbon, Power and Critical Facilities Services where he was responsible for strategic technology planning and business development. Prior to that, he was the co-founder and CEO of EYP Mission Critical Facilities, Inc., a consulting and engineering firm dedicated to the design and operations of data centers until its acquisition by HP in January 2008.

Mr. Gross currently serves on the board of advisors at the Institute of the Environment and Sustainability at the University of California Los Angeles, an organization dedicated to promoting sustainability science in academia, policy, and commerce. He has also served on the board of directors at Asetek A/S, a leading provider of liquid cooling systems for data centers, servers, workstations, gaming, and high performance PCs that is listed on the Oslo Stock Exchange, since July 2014.

Thomas Patrick Kelly

Thomas Patrick Kelly serves as CFO for, a venture-backed internet services company based in Austin, Texas. Prior to joining, Kelly was interim CFO for Panera Bread, leading all finance and accounting teams for the bakery-café company. Prior to joining Panera, Kelly was interim CFO for Hawker Beechcraft Corp., a Wichita, Kan. based aerospace manufacturing company. Before joining Hawker Beechcraft, he served as interim CEO at ExpressJet, a regional airline in Houston, Texas.

Kelly has also held a number of senior financial positions at Vignette Corp., which was acquired by Open Text Corp.; Dell, Inc.; Trilogy Enterprises; Sabre Holdings; and American Airlines.
Steven Sams

Steven Sams is an accomplished technology and marketing strategist with nearly 34 years in executive and senior sales and operations roles at IBM. Sams most recently led the worldwide organization that supported IBM services sales through business partners as vice president of Global Channels, Alliances and Midmarket Services, for Global Technology Services.

Prior to this, he started and led the Global Site and Facilities Services organization at IBM, a leader in designing and building highly resilient data centers and other mission critical facilities worldwide. His team’s designs are used in some of the largest data centers in the world. In 2007, Sams and his team launched Project Big Green, a billion dollar effort to make data centers worldwide more energy-efficient, cost-effective and greener overall. Prior to this nearly six year stint, he served in various corporate strategy and product management leadership roles.

Sams is a graduate of the Executive Education program at the Harvard Business School. He also earned a master’s in Business Administration from the Rotman School of Management at the University of Toronto and a bachelor’s degree in General Sciences from McMaster University.