Meet the team
Stonepeak has assembled an exemplary team of investment and non-investment professionals, including a group of highly-experienced Operating Partners and Senior Advisors. Our senior leadership has deep asset class expertise and significant experience systematically analyzing and investing in companies across our target sectors.
Executive committee

Michael Dorrell
- Chairman
CEO & Co-Founder

Michael Dorrell
- Chairman
CEO & Co-Founder
Michael is the Chairman, CEO and Co-Founder of Stonepeak and is a member of the Stonepeak Executive Committee. He has been deeply involved in all phases of the firm’s development since its founding in 2011. Today, Michael directs Stonepeak’s strategy and investment decisions, and oversees the firm’s continued expansion into new regions and product areas.
Michael has more than twenty years of experience investing in infrastructure. A longer-tenured investor in a relatively young and still maturing asset class, Michael has been a leader in infrastructure investing, successfully deploying capital across the entire landscape through economic cycles.
Prior to forming Stonepeak, Michael was a Senior Managing Director in Private Equity and Co-Head of the Infrastructure Investment group at Blackstone. Before Blackstone, Michael worked for over a decade at Macquarie, where he started his career, first in Australia and later in New York where he took on roles of increasing responsibility within the firm and ultimately held the title of Senior Managing Director.
Michael received a Bachelor of Laws and a Bachelor of Commerce, both from the University of New South Wales in Sydney.

Jack Howell
- Senior Managing Director
Co-Head Americas

Jack Howell
- Senior Managing Director
Co-Head Americas
Jack is a Senior Managing Director with Stonepeak and is Co-Head of the Americas and a member of the Stonepeak Executive Committee. Prior to joining Stonepeak, Jack worked for Davidson Kempner Capital Management, a hedge fund that focuses on distressed investments and merger arbitrage. Prior to Davidson Kempner, Jack worked for Denham Capital, an energy-focused private equity firm. Jack started his career in Credit Suisse’s energy investment banking group.
Jack received a Bachelor of Arts in Plan II Honors and Business Economics, Phi Beta Kappa, from the University of Texas at Austin.

Hajir Naghdy
- Senior Managing Director
Head of Asia and Middle East

Hajir Naghdy
- Senior Managing Director
Head of Asia and Middle East
Hajir is a Senior Managing Director with Stonepeak and is Head of Asia and the Middle East as well as a member of the Stonepeak Executive Committee. Prior to Stonepeak, Hajir was at Macquarie Capital for nineteen years. Hajir started with Macquarie in Sydney in 1999 and moved to Korea in 2000, as a founding member of the team that established Macquarie’s first infrastructure funds management business in Asia. Hajir played a leading role in twelve of the first fourteen investments made by the Macquarie Korean Infrastructure Fund between 2002 and 2005. Hajir has played numerous roles across Asia and the Middle East in Macquarie’s infrastructure business. Most recently, prior to joining Stonepeak, Hajir was Head of Macquarie Capital in Asia and the Middle East. In this role, he led and established Macquarie Capital’s renewable energy investing business in the region.
Hajir received a Bachelor of Mathematics and Bachelor of Laws from the University of Wollongong in New South Wales, Australia.

Luke Taylor
- Senior Managing Director
Co-Head Americas

Luke Taylor
- Senior Managing Director
Co-Head Americas
Luke is a Senior Managing Director with Stonepeak and is Co-Head of the Americas and a member of the Stonepeak Executive Committee. Luke has been investing across the infrastructure space for more than 20 years. Prior to joining Stonepeak, Luke was a Senior Vice President with Macquarie Capital based in New York, where he spent 10 years investing in a variety of sectors.
Luke received a Bachelor of Commerce and a Master of Business (Distinction) from the University of Otago (New Zealand).

Daniel Wong
- Senior Managing Director
Head of Europe

Daniel Wong
- Senior Managing Director
Head of Europe
Daniel is a Senior Managing Director with Stonepeak and is Head of Europe as well as a member of the Stonepeak Executive Committee.
Prior to joining Stonepeak, Daniel spent more than 20 years at Macquarie where he was most recently Global Co-Head of Macquarie Capital and a Member of the Group Executive Committee. While at Macquarie, Daniel led the firm’s global infrastructure M&A business and was responsible for the principal investment business in infrastructure and energy. Daniel also led Macquarie’s acquisition and served as Chairman of the Green Investment Group, a division that grew under his tenure into one of the world’s leading developers in renewable energy.
Daniel has served on the Board of Trustees of the Shoreditch Trust (a local London charity) and also the Board of the Macquarie Group Foundation.
Daniel received a Bachelor of Laws and a Bachelor of Commerce from the University of Melbourne in Australia.
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William Demas
- Managing Director
- Investment Team
William is a Managing Director with Stonepeak. Before joining Stonepeak, William was an Associate Partner at Copenhagen Infrastructure Partners, where he headed its North American investment activities. Prior to CIP, he worked at Macquarie Capital, where he led its North American renewable energy principal investment and advisory activities. William has more than fifteen years of experience in the renewable energy infrastructure and clean technology sectors, having also worked at Ewing Bemiss & Co., Good Energies and Lazard.
William received a Bachelor of Arts in Economics from Harvard University.