Storengy is a subsidiary of GDF SUEZ. Its business is based on recognised expertise in the design and operation of complex industrial sites and rare expertise in underground modelling. Storengy is one of the few operators in the world to combine skills as varied as market analysis, subsurface sciences, drilling and completion techniques, underground reservoir engineering, operation of surface industrial facilities and industrial safety. Relying on this expertise, Storengy has become one of the world leaders in underground natural gas storage.