AUSTIN, Texas–(BUSINESS WIRE)–Xtensible, a SAM company, today announced the successful production deployment of the next phase of Ameren’s CIM-based Grid Network Model Management (GNMM) program supporting sub-transmission and distribution systems. Xtensible led the design, implementation, and system integration of a production-grade CIM network model that now publishes directly to Ameren’s Advanced Distribution Management System (ADMS) and its distribution planning platform, Synergi Electric,