North American Advisory Board


The Honorable Carole L. Brookins Chairperson
An international consultant, Carole is currently Managing Director of Public Capital Advisors LLC and a former Director of Climate Exchange plc and the Chicago Climate Exchange. Carole served as the United States Executive Director to The World Bank in Washington, D.C from 2001 to 2005.


Ruth Harkin Advisory Board Member
A former Senior Vice President, International Affairs and Government Relations, of United Technologies International and former President and Chief Executive Officer of Overseas Private Investment Corporation, Ruth has over 25 years experience working across government and international trade and investment. Ruth sits on the boards of ConocoPhillips, Bowater, the Iowa Board of Regents and the board of visitors of the College of Business Administration, University of Iowa.


Dennis Thomas Advisory Board Member
Dennis provides public affairs, energy policy and technology consulting. Clients include both regulated and competitive companies. Dennis has been an advisor to NTR companies since 2004 and was previously Chairman of the Texas Public Utility Commission.


Christopher Hunt Advisory Board Member
Christopher is Managing Director of Riverstone Holdings LLC, a leading private equity firm in the energy sector and has 20 years experience in renewable/alternative energy, gas and power.


Carlos Riva Advisory Board Member
Carlos is Chief Executive Officer of Verenium Corporation, a publicly listed advanced biofuels and specialty enzyme company based in the United States. He was first associated with NTR while serving as a Non-executive Director of NTR’s former wind energy business Airtricity.


James Crowley Advisory Board Member
James has been the Chairman and Managing Partner of Old Strategic, LLC since July 2006 and previously held a number of Board and senior investment banking positions. He is a Board member of Green Plains Renewable Energy, Inc. and Chairman of the Audit Committee, a NASDAQ listed bio-ethanol producer and distributor, in which NTR has an associate holding.


Steve Ragiel Advisory Board Member
Steve has over 20 years experience in the recycling sector including most recently as CEO and founder of Greenstar North America.