CleanTech Geomechanics Inc. (CTG) is a Canadian company dedicated to the development of technologies for sustainable renewable energy development. CTG’s primary area of expertise is geomechanics. CTG has developed an innovative geo-energy storage system (geo-ESS), called Cased Wellbore Compressed Air Storage (CWCAS) technology for renewable energy storage projects. CWCAS is an advanced type of Compressed Air Energy Storage (CAES) technology that maintains the advantages of existing CAES processes and enhances the versatility of this energy storage approach.  TTI works with CTG to develop energy storage solutions for re-purposing upstream petroleum assets.