Microgrid control systems

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General information

Name of companyS&C Electric Company
Website of companywww.sandc.com
Name of productGridMaster
Product is hardware and/or software-platformhardware & software platform
Product standardized or project-specific?project-specific
Distribution in which countries?worldwide
Unique selling proposition of the productDesigned for Microgrids, Evolving Code, Embedded Cybersecurity, Distributed Control

Services of the company

Company produces microgrid control hardwareyes
Company programs microgrid control softwareyes
Company provides system integration of microgrid control hardware and softwareyes
Company provides EPC services for microgrid projectsyes
Company provides operations and maintenance of microgridsyes

Scope of control system

Central monitoring and control unit (Hardware)yes
Control unit is standalone product or integrated into other device (if latter, which device?)standalone
Other hardware components (e.g. smart meters, sensors, switches, domestic appliances, …)
Software-Platform for monitoring and control of the microgridyes
Software-Platform is a cloud solution or installed on own server or computer?installed on own server or computer
Software compatible with third party hardware?opt.
Hardware compatible with third party software?opt.
Monitoring and/or control of microgrid via smartphone app?no

Microgrid layout

Which customers is the product aimed at? (e.g. residential, commercial, industrial, community, campus, military, …)industrial, community, campus, military, utility
Focus on offgrid, grid-connected or mobile microgrids?offgrid, grid-connected and mobile
How many kilowatts of installed generating power can be integrated? (FROM - TO)10 kW - 100 MW
How many different generators can be integrated?unlimited
AC bus systemyes
DC bus systemyes
Hybrid AC and DC bus systemopt.
Which control strategy is used to run the microgrid? (e.g. central control, master/slave control, distributed control, …)distrubted control
Which components are needed for grid forming in islanding operation? (e.g. battery, diesel generator, …)
Can the system be retrofitted to existing energy system assets?yes
Can the system be expanded modularly after initial commissioning?yes


Supported communication protocols (e.g. Modbus TCP, Sunspec, KNX, Zigbee, …)The GridMaster communicates using standard protocols, including Modbus, DNP3, CANbus, and JSON.
Supported communication interfaces (e.g. RS485, Ethernet, Wireless LAN, analog inputs an outputs, …)Communications can be made over the network using TCP or UDP and over direct serial communications using RS232, RS485, or any custom protocol.
Connectable generators (e.g. solar PV, wind turbines, CHP, diesel generators, fuel cells, hydro power plants, …)PV, Wind, CHP, Diesel, Fuel Cell
Connectable storage systems (e.g. batteries [lead, lithium, redox flow, …], flywheels, heat storage, …)Battery and Flywheel
Connectable loads (e.g. heat pumps, heating boilers, charging stations for e-mobility, refrigerators, …)Building automation systems
What components/brands can be integrated 'plug & play'?Depends on architecture
What components/brands have to be integrated manually?Generation assets
How are components integrated manually? (e.g. connection boxes, command-line interface, ...)Networking equipment
Software-Platform has graphical user interface for integration and configuration of external devices?yes
Software-Platform has graphical user interface for programming energy management options?yes
Communication between control system and energy system assets is wired or wireless?both
SCADA integration possible?yes
Other options to connect the microgrid to a higher-level distribution grid (e.g. smart meter gateway, CLS-interface, ...)Economic optimization from third party markets, weather
Can smart home systems be integrated into the microgrid?opt.
Is the data encrypted during data transfer? If so, how?encrypted using 256-bit SSL
How is the system protected against threats from outside?All data in motion is also encrypted and the operating system on each IPC is “hardened” according to the latest Secure Technology Implementation Guidelines provided by the Department of Defense
How are firmware updates realized?Patch


Grid conntected operationyes
Islanding operationyes
Automated transition from islanding to grid-connected mode and backyes
Time required for transition from grid-connected to islanded mode (in seconds)Seconds
Uninterruptible Power Supply (UPS)yes
Operation is also possible without connection to the internetin grid connected and islanding mode
Operation is also possible without connection to control room of higher-level distribution system operator (DSO)in grid connected and islanding mode
Asset control of distributed energy resourcesyes
Load management defining curtailable loads and priority loadsyes
Automated dispatch control and optimizationyes
Automated Re-dispatching in response to external orders or unplaned internal eventsyes
Internal voltage and frequency regulation in islanding modeyes
Real time active and reactive power controlyes
Control of power exchange and voltage levels at point of interconnectionyes
Aggregated ramp rate control at point of interconnectionyes
Phase balancing between different AC phasesyes
Black start capabilityyes

Energy management options

Increase in self consumptionyes
Increase of self-sufficiencyyes
Peak Shavingyes
Charging of electric vehiclesyes
Energy management of thermal energy assets? (e.g. heat pumps, thermal storage, ...)yes
Backup poweryes
Zero feed-inyes
Ancillary services for public grid (e.g. frequency regulation, reactive power control, …)frequency regulation, reactive power, demand charge management
Consideration of weather forecastsyes
Consideration of energy load predictionsopt.
Consideration of changing energy prices on the energy marketopt.
Use of AI or self-lernings algorithmsyes
Blockchain based billing and/or pay as you go solutionno
Participation in the energy marketyes

Price indication

Hardware: One-time acquisition costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro)250000 - 700000
Hardware: Monthly maintenance costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro)2500 (depends on geographic location)
Hardware: Costs for other necessary system components? (e.g. smart meters, switches, …)Included with hardware
Software: One-time acquisition costs (without VAT) FROM - TO (approx. retail price in Euro)Included with hardware
Software: Monthly maintenance costs (without VAT) FROM - TO (approx. retail price in Euro)Included with hardware
Are there renting or leasing options? If so, what are those options?no
Price information availableyes

Best practice project

Information on reference projects availableyes
Best practice project - ongridS&C designed and built the Ameren Technology Applications Center (TAC) microgrid, which is one of the few microgrids in the world that operates at utility-scale voltages, between 4 kV and 34.5 kV, and has multiple levels of control. It is also the first investor-owned utility microgrid to island customers on an active feeder. The microgrid utilizes two 500 kW natural gas generators, a 125 kW solar photovoltaic (PV) array, a 50 kW wind turbine, and a 250 kW PureWave® Storage Management System (SMS), totaling approximately 1.4 MW in generation. The microgrid assets are managed by S&C's IPERC GridMaster microgrid controller. The microgrid is capable of operating in a variety of use cases including grid-tied, islanded, frequency control, demand response, peak load shaving and storm preparedness.
Best practice project - offgridS&C is providing EPC services for the design and build of a microgrid for an offgrid industrial site in Oahu, Hawaii. The microgrid will serve the various loads and integrate multiple distributed generation sources including roof top solar arrays, diesel generators and a battery energy storage system. The 500 kW/1 MWh ESS is comprised of an S&C PureWave® SMS-250 and an LG Chem lithium-ion battery system. S&C IPERC is providing the GridMaster® Microgrid Control System to complete the 100% islanded microgrid site maximizing renewable assets and minimizing diesel fuel consumption. The microgrid incorporates 2.0 MW of generation provided by 500 kW generators, 500 kW of energy storage, and 1.0 MW of solar power.

Data update

Data updateNov 2019

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