In one line
Software layer above BMS that orchestrates BESS dispatch decisions — when to charge, discharge, and which markets to bid into.
What it means
An Energy Management System (EMS) sits above the BMS in a BESS architecture. It makes dispatch decisions — when to charge, when to discharge, which energy markets and ancillary services to participate in — based on price signals, forecasts, and operational constraints. EMS quality often determines BESS revenue more than the underlying hardware.
Related terms
Browse every term in the renewable energy glossary, or read the latest analysis on Battery storage.