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Grace Sizey
Customer Energy Management Director at Engie


Grace Sizey, Head of Customer Energy Management, established her career in the energy sector from day one. With over 20 years of Energy markets industry experience, she has leveraged her business skills in a variety of commercial-driven roles.

Starting as a Key Account Manager in the Giants segment, she took an active part in the development of gas and cogeneration business.

As of 2001, Grace joined the newly born Energy Trading Subsidiary of Gaz de France, Gaselys, and managed the development of the commercial franchise in Southern Europe. Grace was Deputy Chief Commercial Officer at GDF SUEZ Trading from 2010 to 2014, focusing on the development of industrial customers portfolio, and Co-Head of Global Energy from 2014 to 2015.

She is graduated from the REIMS Management School in 1991.

Grace Sizey's Network

Agenda Sessions

  • Panel: Moving to a business model that enables a long-term focus on the energy transition