{"version":"0.19.0","built_at":"2026-10-17T14:21:37.518Z","license":"CC BY 4.0 © Mike Reams","canonical":"https://catalog.mikereams.com","product":{"id":"PR-570","name":"Network Manager EMS","vendor":"Hitachi Energy","category":"Transmission energy management (EMS)","description":"Control-room software for transmission operators: real-time state estimation, contingency and stability analysis, power flow and optimal power flow, dynamic line ratings and congestion studies, with a companion generation management system for automatic generation control, reserves and economic dispatch. Part of the Network Manager family; runs on premises, in the cloud or hybrid.","website":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","license_model":"mixed","deployment":["self-hosted","hybrid"],"aliases":["Network Manager","Network Manager GMS","Hitachi Energy EMS"],"csdm_note":"One Business Application for the control-center system, with Application Services for production, backup control center and training environments; the SCADA front ends and the substations it monitors are OT infrastructure.","sources":[{"url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","title":"Network Manager Energy Management System (EMS) | Hitachi Energy"},{"url":"https://www.hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-generation-management-system-gms","title":"Network Manager Generation Management System (GMS) | Hitachi Energy"},{"url":"https://www.hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager","title":"Network Control | Hitachi Energy"}],"as_of":"2026-10-17","product_capabilities":[{"id":"PC-570.10","name":"State Estimation","description":"Works out real-time flows, voltages, phase angles and losses across the transmission network from measurements, as the starting point for every other study.","business_capability_ids":["BC-1590.10.10"],"maturity":"core","confidence":"high","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.10.10","name":"State Estimation"}]},{"id":"PC-570.20","name":"Security Analysis","description":"Runs power flows for a set of contingencies to find lines and buses that would exceed current or voltage limits.","business_capability_ids":["BC-1590.10.20","BC-1590.10.30"],"maturity":"core","confidence":"high","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.10.20","name":"Real-Time Contingency Analysis"},{"id":"BC-1590.10.30","name":"Operating Limit Control"}]},{"id":"PC-570.30","name":"Power Flow and Optimal Power Flow","description":"Studies current and future network states from schedules and forecasts, and sets controllable devices to cut losses while holding voltages within limits.","business_capability_ids":["BC-1590.10.30","BC-1590.30.20"],"maturity":"core","confidence":"medium","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.10.30","name":"Operating Limit Control"},{"id":"BC-1590.30.20","name":"Outage Security Studies"}]},{"id":"PC-570.40","name":"Stability Analysis","description":"Assesses the system's dynamic behavior to confirm it remains stable under present conditions.","business_capability_ids":["BC-1590.10.20"],"maturity":"strong","confidence":"high","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.10.20","name":"Real-Time Contingency Analysis"}]},{"id":"PC-570.50","name":"Dynamic Line Ratings and Congestion Forecasting","description":"Brings forecast line ratings into real-time and look-ahead studies, and runs day-ahead and intraday security studies to find congestion before it happens.","business_capability_ids":["BC-1590.10.30","BC-1590.30.20"],"maturity":"strong","confidence":"high","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.10.30","name":"Operating Limit Control"},{"id":"BC-1590.30.20","name":"Outage Security Studies"}]},{"id":"PC-570.60","name":"Automatic Generation Control","description":"Controls participating generators across one or more areas to keep generation, interchange and load balanced.","business_capability_ids":["BC-1590.20.10"],"maturity":"core","confidence":"high","source_url":"https://www.hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-generation-management-system-gms","business_capabilities":[{"id":"BC-1590.20.10","name":"Automatic Generation Control"}]},{"id":"PC-570.70","name":"Reserves Monitoring and Economic Dispatch","description":"Tracks available operating reserves, assigns generation output economically, and shows interchanges beside generation and reserve levels.","business_capability_ids":["BC-1590.20.30","BC-1590.20.20","BC-1540.10.20"],"maturity":"strong","confidence":"medium","source_url":"https://www.hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-generation-management-system-gms","business_capabilities":[{"id":"BC-1590.20.30","name":"Operating Reserve Monitoring"},{"id":"BC-1590.20.20","name":"Interchange Scheduling"},{"id":"BC-1540.10.20","name":"Real-Time Plant Dispatch"}]},{"id":"PC-570.80","name":"Operator Training Environment","description":"An operator training environment that comes with the EMS, where operators practice without touching the live system.","business_capability_ids":["BC-1590.40.30"],"maturity":"partial","confidence":"medium","source_url":"https://hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-energy-management-system-ems","business_capabilities":[{"id":"BC-1590.40.30","name":"Restoration Drills & Training"}]}],"page_url":"https://catalog.mikereams.com/products/PR-570"}}