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20 Manufacturers

BESS Plant Controls Manufacturers

Compare SCADA, EMS, and plant controller providers for C&I and utility-scale Battery Energy Storage System projects.

20 manufacturers
Manufacturer Region Products Founded Ownership
ABB Switzerland PCS100 ESS, Ability EDCS, MV Power Converter 1988 Listed
DEIF Denmark ASC 150 Storage, ASC-4 Battery, AGC 150 Hybrid 1933 Private
FREQCON Germany BESS FQ, BESS PRO 1988 Private
Fractal EMS USA Fractal EMS Platform, Master Plant Controller, Bid Optimization Module 2019 Private
GE Vernova USA PowerSuite EMS 2024 Listed
Gantner Instruments Austria Q.reader DAQ PPC, Q.reader Cabinet QRC, String Monitoring 1980 Private
GreenPowerMonitor (DNV) Spain EMS, Hybrid EMS (HEMS), GPM Horizon, GPM SCADA 2007 Private
Hitachi Energy Switzerland Power Plant Controller (PPC) 2020 Listed
Honeywell USA Experion Energy Control System 1906 Listed
Huawei Digital Power China SPPC2000 2021 Private
HyperStrong China HyperStrong AI Platform 2009 Listed
JDEnergy China EMS Platform 2018 Private
Linyang Energy China Easy Storage i²EMS 1995 Listed
Nidec Industrial Solutions Japan EMS, PMS 1973 Listed
Power Factors USA Unity REMS, Central SCADA, Central EMS, PPC, NovaSCOUT SCADA, BESS EMS, Hybrid Plant Controller 2015 Private
Prevalon Energy USA insightOS EMS 2024 Private
Renepoly China Smart Microgrid Controller, EMS Platform 2016 Private
Siemens Energy Germany SINACON EMS 2020 Listed
Wärtsilä Energy Finland GEMS EMS, GEMS BESS Controller 1834 Listed
Zhiguang Electric China EMS Platform 1999 Listed

What are Plant Controls?

Plant controls are the software and hardware systems that coordinate the operation of a Battery Energy Storage System. They encompass the Energy Management System (EMS) for dispatch optimization, SCADA for real-time monitoring and alarm management, and the Power Plant Controller (PPC) for grid code compliance including frequency response and voltage regulation.

In utility-scale BESS projects, plant controls are the central intelligence layer — they decide when to charge and discharge, communicate with the grid operator, and ensure the plant operates safely and profitably. Some controls providers are pure-play software companies, while others are hardware manufacturers that also offer integrated control solutions.

What to compare when evaluating plant controls

When shortlisting plant controls suppliers for a BESS project, these are the key technical capabilities EPCs, developers, and asset owners typically evaluate:

System Types
EMS, SCADA, PPC
Energy Management System, SCADA, and Power Plant Controller — often combined
Dispatch Optimization
AI / rule-based
Optimizes charge/discharge schedules for revenue maximization
Communication Protocols
IEC 61850, Modbus, DNP3
IEC 61850 is standard for utility-scale; Modbus common for C&I
Grid Code Compliance
IEEE 1547, EN 50549
Controls must implement frequency response, voltage regulation, and ramp rates
Remote Monitoring
Cloud-based dashboards
Real-time fleet monitoring, alerting, and performance analytics
Cybersecurity
IEC 62443
Industrial cybersecurity standard increasingly required for grid-connected BESS

Frequently Asked Questions

What is the role of plant controls in a BESS project?

Plant controls coordinate the operation of all BESS subsystems — batteries, PCS, cooling, and auxiliary power. They include the Energy Management System (EMS) for dispatch optimization, SCADA for real-time monitoring and alarms, and the Power Plant Controller (PPC) for grid code compliance and frequency/voltage regulation.

What is the difference between EMS, SCADA, and PPC?

The EMS handles high-level dispatch decisions (when to charge, discharge, and at what power), optimizing for revenue or grid services. SCADA provides real-time monitoring, data logging, and alarm management. The PPC interfaces directly with the grid operator, implementing frequency response, voltage regulation, and power ramp rates as required by the grid code.

Why is grid code compliance important for BESS controls?

Grid operators require BESS plants to respond to grid events (frequency deviations, voltage fluctuations) within strict time frames. The plant controller must implement these responses automatically. Non-compliance can result in penalties, curtailment, or disconnection from the grid.

What communication protocols are used in BESS plant controls?

IEC 61850 is the standard for utility-scale BESS, providing high-speed communication between the PPC, PCS, and BMS. Modbus TCP/RTU is common for C&I systems. DNP3 is used for utility SCADA communication. OPC-UA is increasingly used for cloud connectivity and fleet management.

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