Microgrid control systems

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General information

Name of companyFenecon
Website of companywww.fenecon.de
Name of productFEMS (FENECON Energy Management System)
Product is hardware and/or software-platformhardware & software platform
Product standardized or project-specific?both
Distribution in which countries?EU, Africa
Unique selling proposition of the productOpenSource system (based on OpenEMS)
CommentsOpenEMS was awarded with different awards, e.g. PV Magazine Energy Storage Highlight 2019 (3rd place) and PV Magazine Top Business Model 2018. More than 200 developers are working for OpenEMS in different public R&D projects and at the member companies.

Services of the company

Company produces microgrid control hardwareno
Company programs microgrid control softwareyes
Company provides system integration of microgrid control hardware and softwareyes
Company provides EPC services for microgrid projectsno
Company provides operations and maintenance of microgridsno

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 unit
Other hardware components (e.g. smart meters, sensors, switches, domestic appliances, …)many implemented devices
Software-Platform for monitoring and control of the microgridyes
Software-Platform is a cloud solution or installed on own server or computer?both is possible
Software compatible with third party hardware?yes
Hardware compatible with third party software?yes
Monitoring and/or control of microgrid via smartphone app?yes

Microgrid layout

Which customers is the product aimed at? (e.g. residential, commercial, industrial, community, campus, military, …)residential, commercial, industrial, community, campus, virtual power plants, power quality and grid support
Focus on offgrid, grid-connected or mobile microgrids?grid-connected
How many kilowatts of installed generating power can be integrated? (FROM - TO)unlimited
How many different generators can be integrated?unlimited
AC bus systemyes
DC bus systemopt.
Hybrid AC and DC bus systemopt.
Which control strategy is used to run the microgrid? (e.g. central control, master/slave control, distributed control, …)central control
Which components are needed for grid forming in islanding operation? (e.g. battery, diesel generator, …)PCS with island mode or 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, …)all available protocols, see www.openems.io
Supported communication interfaces (e.g. RS485, Ethernet, Wireless LAN, analog inputs an outputs, …)all available communication interfaces, see www.openems.io
Connectable generators (e.g. solar PV, wind turbines, CHP, diesel generators, fuel cells, hydro power plants, …)all generators
Connectable storage systems (e.g. batteries [lead, lithium, redox flow, …], flywheels, heat storage, …)all storage systems
Connectable loads (e.g. heat pumps, heating boilers, charging stations for e-mobility, refrigerators, …)all loads
What components/brands can be integrated 'plug & play'?abstract platform approach allows to integrate all components by plug&play as long as relevant interface and protocol are implemented
What components/brands have to be integrated manually?manual integration is easily accessible due to open source approach
How are components integrated manually? (e.g. connection boxes, command-line interface, ...)connection terminals for e.g. RS485, Ethernet and others are available
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?wired communication
SCADA integration possible?yes
Other options to connect the microgrid to a higher-level distribution grid (e.g. smart meter gateway, CLS-interface, ...)yes, on application basis
Can smart home systems be integrated into the microgrid?yes
Is the data encrypted during data transfer? If so, how?yes
How is the system protected against threats from outside?encrypted communication
How are firmware updates realized?automatic release


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)1
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 control, phase balancing
Consideration of weather forecastsyes
Consideration of energy load predictionsyes
Consideration of changing energy prices on the energy marketyes
Use of AI or self-lernings algorithmsyes
Blockchain based billing and/or pay as you go solutionopt.
Participation in the energy marketyes
Commentsall functions are bases on apps and can also be used in any combination

Price indication

Hardware: One-time acquisition costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro)400 - 2000
Hardware: Monthly maintenance costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro)no mounthly costs
Hardware: Costs for other necessary system components? (e.g. smart meters, switches, …)200 - 500
Software: One-time acquisition costs (without VAT) FROM - TO (approx. retail price in Euro)depending on app prices; apps are provided by different companies on an app store
Software: Monthly maintenance costs (without VAT) FROM - TO (approx. retail price in Euro)no mounthly costs
Are there renting or leasing options? If so, what are those options?
CommentsApps are either based on one-time acquisition costs or monthly rates, depending on the business case of the app developer
Price information availableyes

Best practice project

Information on reference projects availableyes
Best practice project - ongrid50 kW / 60 kWh commercial scale storage system at FENECON headquarter; 32A connection to company sub-grid and 63A to public grid; ESS supplies 5 charging stations (2 x 22kW AC, 2 x 11 kW AC, 1 x 24 kW DC-wallbox) and supports with peak-shaving and intelligent charge-point management; additional apps which are implemented are PV own consumption app to increase own-consumption of rooftop PV in the company, day-ahead app to use volatile stock market energy prices as well as virtual power plant connection with blockchain (https://blogpv.net/)
Best practice project - offgridProject for BayWa r.e. in Sambia; 86 kWp PV with 160 kW / 160 kWh storage system consisting of 4 FENECON Commercial 60-40-40 DC-storage units, which are clustered on 2 AC-buses in order to supply a farm including water pumping, irrigation as well as offices and others; running fully-automatic since >2 years; weak-grid operation with grid-failure for up to 16h per day; absolute zero feed-in requirement; no additional diesel genset or others, all has to be supplied by PV and storage and managed by the EMS https://www.baywa-re.com/en/news/details/pilot-project-in-africa-completed/

Data update

Data updateNov 2019

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