Philippe Joubert worked in Brazil for nearly 25 years, primarily for the Alstom Group. He then returned to France in 2000 to assume the management of Alstom T&D and subsequently of Alstom Power. He was Deputy Chief Executive Officer of Alstom until 2012. Philippe Joubert is currently Chairman and founder of Earth on Board, Senior Advisor to the World Business Council on Sustainable Development, Senior Advisor for International Development with the World Energy Council and a Fellow at the Cambridge Institute for Sustainability Leadership at Cambridge University in the United Kingdom. Philippe Joubert graduated from French business school ESSEC.

Laurence Mulliez holds an Economics & Finance degree from ESC Rouen and an MBA from the University of Chicago Booth (USA), majoring in finance and strategy. Her professional career began at BNP Paribas and, after her MBA, she was briefly with M&M Mars in Chicago (USA) and subsequently held various executive management roles over 16 years with Amoco and BP in the USA, Switzerland and the UK. Her areas of expertise include strategy and M&A, but especially in employee management and enhancing financial performance as a Chief Executive Officer in chemicals, gas, electricity, renewable energies and industrial lubricants. Her last role at BP was Global Chief Executive Officer for Castrol industrial lubricants. From January 2010 to November 2013 she was Chief Executive Officer of Eoxis, an independent electricity producer owned by Platina Partners and active in the renewable energies sector (wind and solar) in Spain, Italy and India. Since 2011, she has been a director at several listed companies operating in the industrial and/or energy sectors. Laurence Mulliez was elected Chairwoman of the Voltalia Board of Directors on 5 May 2014. She was re-appointed on 11 June 2015, 24 May 2018 and again on 19 May 2021.