Leading the Charge in Energy Efficiency: Marion Deridder Blondel, therefore, questions and identifies who she is Marion Deridder Blondel has been the Chief of Strategy & Business Development at ENGIE Energy Solutions since October 2019. ENGIE Energy and Utility Company can be considered a leading company in energy efficiency and distributed decarbonization. https://livepositively.com/leading-the-charge-in-energy-efficiency-marion-deridder-blondel-therefore-questions-and-identifies-who-she-is/