Product solutions for efficient battery energy storage systems – Independent power supply in an electrified world

Product solutions for efficient battery energy storage systems – Independent power supply in an electrified world | Phoenix Contact

Contents Battery energy storage systems as the key to the energy transition 4 6 8 10 12 14 16 Energy on demand Unleash the full power of battery storage systems Efficient grid stabilization and security of supply Storing energy, reducing costs, safeguarding processes Customer reference: DC-coupled battery storage systems Technology that moves: Mobile battery storage systems Reliable, robust components and solutions for battery energy storage systems Our portfolio at a glance Control and automate Charge and discharge Connectivity of battery modules Supply and protect Secure communication Connectivity in the control cabinet Data visualization and energy management The role of battery storage systems in the All Electric Society 18 20 22 24 26 28 32 34 36 38 Gain more info To the product Phoenix Contact 3

Energy on demand Shaping the future with battery storage systems It is not sunny all the time, the wind doesn’t blow constantly. Nevertheless, energy is required at all times. The energy transition places new demands on our power supply: Flexibility, sustainability, and security of supply are decisive factors for a future- oriented energy system. Battery energy storage systems play a central role here. They are an efficient way of storing electrical energy and making it available whenever needed, regardless of the time and source of its generation. Using a BESS makes “energy on demand” a reality. Excess energy from renewable, decentral power generators is stored and then made available again exactly when it is needed. This approach can be used for stabilizing the grid, for peak shaving, and for optimizing self-consumption. This flexibility makes battery storage systems a key technology for industry, trade, and power providers alike. Mastering technological requirements Battery storage systems place high demands on controllers, communication, cybersecurity, and system integration. They must be integrated seamlessly into existing energy infrastructures, have standardized and reliable communication interfaces, and respond in real time to grid requirements, load changes, and energy prices. This is where Phoenix Contact comes into play with a modular solution portfolio that is based on proven industrial electronics and designed specifically for complex storage applications. We will be happy to accompany you on your journey to a sustainable future with battery energy storage systems that are digitally networked, flexible to control, and operate safely. Battery energy storage systems are the key to a flexible power supply. They enable the efficient use of renewable energies and strengthen the resilience of our grids. Expert team for battery storage systems at Phoenix Contact 6 Phoenix Contact

Unleash the full power of battery storage systems Storing energy intelligently with Phoenix Contact As an experienced specialist in automation and digitalization, Phoenix Contact provides components and customized solutions for high-performance battery storage systems in the megawatt-hour range. Our portfolio combines robust, industrial-grade hardware with flexible, scalable software. For fast project implementation, we supply ready- to-use systems for controlling, monitoring, and integrating battery storage systems into existing networks. Intelligent control systems ensure maximum efficiency and flexibility, while future-proof interfaces Partnerships on an equal footing Energy storage systems provide the foundation for a reliable and sustainable power supply that offers both economic and ecological advantages. With technical expertise and decades of experience in the energy industry, Phoenix Contact is the ideal partner for power providers, grid operators, Find out more about BESS simplify integration into smart grids and virtual power plants. Our product and solution portfolio ensures the reliable operation of your battery storage system. storage project developers, and battery manufacturers. Our solutions create trust, promote innovation, and ensure sustainable success. Efficient: DC-coupled battery storage system in front of the Phoenix Contact All Electric Society Factory at the Blomberg site in Germany 8 Phoenix Contact

Your advantages ✓ Fast project implementation with ready-to-use hardware and software modules, including comprehensive documentation ✓ Scalable platform for applications ranging from several hundred kilowatt hours to large-scale storage systems in the MWh range ✓ Future-proof communication with standard protocols, update capability, and extension options ✓ Easy integration into SCADA systems, control engineering, and operational management systems ✓ High operational safety with tested protection and supply technology Customer-specific control cabinet solutions Depending on the field of application, different applications pose individual challenges on technology, standards, and integration. Due to our many years of expertise in control cabinet building, manufacturers and system integrators receive not only products, but also tailor-made complete solutions for high-performance battery storage systems. The individual adaptation enables solutions to be implemented that are precisely tailored to the respective technical and economic framework conditions. At the same time, the close support provided by our sales team throughout all project phases ensures high efficiency and shorter processing times. Each process step is implemented and monitored professionally, which ensures consistently high quality. As a customer, you receive a turnkey control cabinet solution that fully meets your individual requirements. Control cabinet solution in the battery storage system of our All Electric Society Park Phoenix Contact 9

Battery storage applications Efficient grid stabilization and security of supply Battery storage systems as a strategic advantage for grid operators and power providers With the growing share of renewable energies, volatility in the power grid is increasing. Battery storage systems offer a highly effective and flexible solution here. They act as dynamic buffers that move energy over time, compensate for frequency fluctuations, and regulate voltage fluctuations. The ability to provide energy within seconds and precisely as required is a decisive factor. This ensures security of supply and enables efficient use of solar and wind power on the generator side. Our components and solutions make it possible to integrate modern storage systems into existing networks and infrastructures with scalability. They therefore make an important contribution to the decarbonization and resilience of the energy system. ❯ More information on our portfolio starting on page 18 50.0 Hz Voltage stabilization and reactive power provision Battery storage systems actively support voltage stability in the grid. By providing reactive power in a targeted manner, they stabilize the voltage level and relieve the strain on transformers and cables. This improves the quality of the grid and enables the reliable integration of decentral power sources. Frequency regulation Battery storage systems respond immediately to frequency deviations in the power grid. They balance out short-term differences between generation and consumption, thereby stabilizing the grid frequency. They are essential for ensuring the security of supply and system stability, especially when integrating volatile renewable energies. 10 Phoenix Contact

Battery storage applications Storing energy, reducing costs, safeguarding processes Sustainable energy storage for industry Industrial storage systems are essential for optimizing the power supply in the manufacturing economy. By integrating battery storage systems, companies can cut peak loads, increase grid stability, and improve operational safety. Phoenix Contact offers tailored solutions for controlling, monitoring, and integrating such storage systems. With advanced technologies such as bidirectional converters and intelligent energy management systems, our solutions enable the efficient storage and use of energy. They are specifically tailored to the requirements of industrial applications and offer high scalability and reliability. The integration of battery storage systems into industrial DC power grids further reinforces the advantages listed above. DC power grids enable low-loss power transmission, simplify the integration of renewable sources, and enable stand- alone operation in the event of mains failures. Here too, we offer suitable products combined with technical consultation. ❯ More information on our portfolio starting on page 18 Peak shaving Industrial storage systems enable companies to avoid short-term current peaks by using energy from the battery storage systems when it is needed. This reduces the grid load and lowers energy costs. Emergency power supply Battery storage systems provide reliable emergency power by immediately stepping in during a power failure and keeping critical systems running. This increases operational safety and minimizes downtimes. Self-consumption optimization Battery storage systems enable us to store and use self-generated energy as required. This reduces the dependency on the power grid, which in turn provides cost advantages. € Electricity trading Arbitrage with battery storage systems is based on fluctuations in electricity prices. Energy is stored at times when the price is low and sold again when the price is high. This increases revenue and strengthens profitability. 12 Phoenix Contact

Customer reference Integration of battery storage systems into an industrial DC grid Maximum efficiency and stability The customer Voltfang GmbH, based in Aachen, Germany, develops methods for recycling e-mobility batteries. Second-life batteries and batteries from overproduction, which were originally designed for e-mobility, are characterized by a particularly high load capacity. Voltfang takes advantage of this and focuses on reusing high-performance batteries that are designed for high-level cycle stability. With the help of advanced strategies, they maximize the service life of these batteries and ensure their efficiency for stationary applications. Application As one of the first industrial buildings in Germany, the All Electric Society Factory in Blomberg, Germany, uses a DC power grid to increase energy efficiency and security of supply. A central component is the directly connected battery storage system, which operates particularly efficiently due to the elimination of conversion losses between AC and DC. The BESS enables the strategic storage of renewable energies and protects against increasing electricity costs through the needs-based use of this energy. With the high response speed and modular design, the system is flexibly scalable. This makes it ideal for industrial applications. The solution The cooperation between Phoenix Contact and Voltfang resulted in the installation of a 300 kWh battery storage system in front of the All Electric Society Factory. Here, Voltfang uses recycled battery modules from electric vehicles, which are then reused in stationary applications. The CHARX DC power modules enable a bidirectional system power of 270 kW. Other Phoenix Contact components such as terminal blocks, safety systems, and UPS systems ensure the technical infrastructure. The system can supply itself from the battery, thus enabling a black start of the DC grid. It is housed in a 20-foot container and protected against overvoltages. The entire system is integrated into the DC grid via PLCnext Technology. The Voltfang energy management system regulates charging and discharging processes based on voltage, thereby stabilizing the grid. The control characteristic curve is specified by the higher-level energy management system. The cooperation with Voltfang resulted in the realization of the DC-coupled energy storage system pilot project, which offers ecological and economic advantages due to higher efficiency and lower material usage. Find out more about the customer project Cooperation as a success factor: Roman Alberti from Voltfang GmbH and Tobias Lüke from Phoenix Contact Power Supplies GmbH Phoenix Contact 15

Battery storage applications Technology that moves: Mobile battery storage systems Energy to go Mobile battery storage systems are becoming increasingly important. They enable a flexible, decentral, and emission-free power supply that is independent of the public power grid. The central strength of mobile storage applications lies in their flexibility and mobility. They can be used at short notice, transported easily, and scaled as needed. At the same time, they place high demands on safety, robustness, and fast commissioning. Our comprehensive portfolio of low-maintenance components and reliable solutions also meets these requirements and ensures maximum availability. Often, mobile battery storage systems have to operate under harsh ambient conditions and in places with limited access to the power grid. They are increasingly being used in mobile charging infrastructures, construction projects, the mining industry, at events, and in agriculture. Furthermore, in many of these applications, diesel generators were long considered a standard solution for the power supply. State-of-the-art battery storage systems are increasingly making diesel generators obsolete, both from a technical and ecological point of view. This is because mobile storage systems operate almost silently and do not require fossil fuels. ❯ More information on our portfolio starting on page 18 Stand-alone grids Mobile BESS can create a so-called stand-alone grid (microgrid), which enables flexible use in scenarios without an existing grid infrastructure. In this operating mode, our power electronics do not act as a feed-in unit in an existing supply network, but take on a grid-forming function. They generate a stable, grid-like voltage and frequency profile to which electrical loads are directly connected. Backup power Battery storage systems can stabilize the local energy system during periods of high, unpredictable energy demand and cover additional loads that arise, for example, when several heavy machines are operated simultaneously. They also enable loads to be charged with high charging powers, even if there is no mains grid connection or the grid connection is insufficient. They therefore serve as a backup for critical applications. 16 Phoenix Contact

Our portfolio at a glance Everything from a single source The right solution for every functional area of the battery storage system Whether grid-supporting utility-scale storage systems, commercial industrial applications, or mobile applications – the requirements on state-of-the-art battery storage systems are diverse and complex. Phoenix Contact meets these challenges with a comprehensive, coordinated product and solution portfolio that covers all relevant areas of the storage: from high-performance control and communication technology to protection and supply solutions, right through to scalable software for monitoring and for energy management. Control and automate How do I monitor my battery storage system and integrate open- and closed-loop control? ❯ More information starting on page 22 Charge and discharge How do I charge and discharge my batteries reliably? ❯ More information starting on page 24 Connectivity of battery modules How do I wire my battery modules efficiently and with modularity? ❯ More information starting on page 26 20 Phoenix Contact

Smart data individualization In addition to the hardware, we also provide a suitable digital solution for visualizing your BESS data. Within seconds, you will gain an insight into your data, tailored to your hardware and applications. ❯ More information starting on page 36 Cybersecurity Our experts for industrial security provide comprehensive advice and support on the most important security aspects. The 360° complete package for industrial security maximizes the security of your battery energy storage system. More about cybersecurity PLE O E P P R O C 360° Industrial Security E S S E S TECHNO L O G Y IEC 62443 conform Supply and protect How do I ensure maximum availability of my control and protection systems? ❯ More information starting on page 28 Secure communication How do I establish reliable communication within and with my battery storage system? ❯ More information starting on page 32 Connectivity in the control cabinet How do I wire my battery storage system safely and with scalability? ❯ More information starting on page 34 Phoenix Contact 21

Functional area: Control and automate Intelligently controlled, efficiently stored PLCnext Control PLCnext Control is a real-time-capable, modular automation platform that combines classic PLC logic with high-level languages such as C++, Python, and IEC 61131-3. The powerful controllers and edge devices are based on an open Linux system and enable flexible, scalable BESS and grid projects. To PLCnext Control Your advantages ✓ Software-based control system with open PLCnext Technology architecture ✓ Easy scaling and adaptation to new requirements without physical retrofitting ✓ Direct connection to IT systems, cloud services, and IIoT platforms for data-driven applications ✓ Minimizes investment costs as no special hardware is required ✓ Maximum cybersecurity with container-based technology PLCnext Technology Designed by Phoenix Contact 22 Phoenix Contact

Automation for safe battery storage systems The integration of automation technology into battery storage systems increases efficiency, safety, and future viability. State-of-the-art solutions precisely control and monitor charging and discharging processes, optimize energy flows in real time, and meet grid requirements intelligently. Sensors and algorithms detect critical states such as overheating and cell errors at an early stage and automatically introduce protective measures. Via cloud and IoT platforms, operating data can be analyzed centrally and used for predictive maintenance. This increases availability Grid operator T N A T N A C D V 0 3 - 2 1 R W P : 1 X H H T T E E : : 2 2 X X H T E : 3 X P D : 4 X B S U 5 X : B S U 6 X : C D V 0 3 - 2 1 R W P 1 X : Battery management controller 2 2 5 5 1 1 2 2 F F C C X X A A 7 7 6 6 2 2 4 4 0 0 4 4 2 2 . . . . o o N N d d r r O O H H T T E E 2 2 X X : : H T E 3 X : P D 4 X : B S U 5 X : B S U 6 X : a 0 1 2 3 t e n . y t i n u m m o c - t x e n c p w w w . l SD-CARD R X4 . C B 3 1 D 9 5 4 0 A 0 0 . . . : . r d d A C A M M O C : 7 X M O C 8 X : M O C 7 X : M O C 8 X : PLCnext Technoligy Designed by PHOENIX CONTACT RUN FAIL DBG D E BF-C BF-D SF BOOT EXT p u t r a t s y s a e r o f e r e h n a c s 5 3 9 2 1 c c 9 : d r o w s s a p X3 UL a1 b1 a2 b2 IF CAN 2702668 D UI E1 E2 a1 00 10 20 30 00 01 11 21 31 01 02 12 22 32 02 03 13 23 33 03 a2 10 11 12 13 b1 20 21 22 23 b2 30 31 32 33 2 2 5 5 1 1 2 2 F F C C X X A A 7 7 6 6 2 2 4 4 0 0 4 4 2 2 . . . . o o N N d d r r O O . C B 3 1 D 9 5 4 0 A 0 0 . . . : . r d d A C A M SD-CARD R t X4 e n . y t i n u m m o c - t x e n c p w w w . l PLCnext Technoligy Designed by PHOENIX CONTACT RUN FAIL DBG D E BF-C BF-D SF BOOT EXT p u t r a t s y s a e r o f e r e h n a c s 5 3 9 2 1 c c 9 : d r o w s s a p X3 UL a1 b1 a2 b2 Power plant controller Campus EMS / local EMS HMI SD-CARD R t X4 e n . y t i n u m m o c - t x e n c p w w w . l . C B 3 1 D 9 5 4 0 A 0 0 . . . : . r d d A C A M Energy storage controller 2 2 5 5 1 1 2 2 F F C C X X A A 7 7 6 6 2 2 4 4 0 0 4 4 2 2 . . . . o o N N d d r r O O Power condition controller PLCnext Technoligy Designed by PHOENIX CONTACT RUN FAIL DBG D E BF-C BF-D SF BOOT EXT p u t r a t s y s a e r o f e r e h n a c s 5 3 9 2 1 c c 9 : d r o w s s a p X3 UL a1 b1 a2 b2 Potential ranking and the service life, and reduces costs. Automation creates transparency, minimizes risks, and enables scalable integration into complex energy systems. Explore the topology to discover our wide range of control and automation solutions. More details on our portfolio Installation of control and automation technology in a control cabinet Weather data Energy prices Consumers Signal conditioning 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 Auxiliary systems Air conditioning Thermo management Protective devices Fire/gas detection Water detection Relays SIL II Schematic view of the “Control and automate” functional area in the battery storage system Phoenix Contact 23

Functional area: Charge and discharge Precise energy flow control made easy TRIO POWER power module The TRIO POWER power supply for rack mounting helps to optimally utilize the available energy. The new bidirectional TRIO POWER power module with 20 kW is used to provide the energy from the storage device and to buffer the energy in the storage system. When a power failure or peak load occurs, the energy is fed back into the grid. To the TRIO POWER power module Your advantages ✓ Use in a range of applications, including energy storage systems, e-mobility, and DC technology ✓ Bidirectional functionality enables both drawing electricity from the grid and its feed-in to the grid ✓ 19" standard with front connection technology for flexible and easy mounting ✓ Choice between grid-connected and off-grid operation 24 Phoenix Contact

Efficient power conversion in the storage system Power conversion is a central component of state-of-the-art battery storage systems. It determines the efficiency, reliability, and service life of the entire application. Phoenix Contact provides powerful and scalable power electronics that have been specifically developed to meet the requirements of charging and discharging processes in both stationary and mobile energy storage units. Our components enable precise control of the energy flows between the grid, battery storage system, and loads with minimal losses and maximum system availability. With the modular architecture, our solutions can be flexibly integrated into various system designs. In addition to the TRIO POWER series, power modules from the CHARX product family can also be integrated into battery storage applications. This is particularly relevant when using solar power on the generation side. The integrated Maximum Power Point Tracking (MPPT) of the CHARX power basic DC/DC power module with 30 kW enables efficient DC current conversion directly from the photovoltaic system without additional inverter steps. For safe integration into the overall system, we provide additional components for energy measurement, protection, and system monitoring. More details on our portfolio CHARX PS-M2/825DC/1000DC/30KW DC power module for optimum integration of PV systems AC Mains decoupling switch Mains decoupling switch DC Battery isolation switch DC fuse DC fuse DC fuse AC surge protection AC EMpro AC/DC bidirectional conversion element DC/DC conversion element DC EMpro DC surge protection Schematic view of the “Charge and discharge” functional area in the battery storage system Phoenix Contact 25

Functional area: Connectivity of battery modules Meet interface requirements in the battery module Battery-pole connectors The BPC series connector that is protected against polarity reversal is ideal for use in energy storage units. Rotatable and featuring touch-proof contacts and mechanical coding, the single-position connector provides a particularly high level of flexibility and safety when connecting battery modules. To the battery-pole connectors Your advantages ✓ Error-free connection through mechanical and color coding ✓ Reliable installation due to the waterproof design and touch-proof contacts ✓ Consistent power transmission due to high shock and vibration resistance ✓ Flexibility as it can be rotated 360° and features various connection methods ✓ Compliance with all relevant energy storage standards: UL 4128, UL 1973, UL 9540 26 Phoenix Contact

High currents, simple data: Meet interface requirements in the battery module The battery module, which consists of a large number of serial and parallel connected battery cells, forms the heart of every battery storage system. These modules are usually designed as closed units with housing and have internal and external interfaces for signal, data, and power transmission. Plug-in external connections are a decisive advantage for safe, fast installation and maintenance-friendly system integration. While the requirements on the data interfaces are usually low – which allows the use of unshielded cables and simple two-wire communication – the power connections place significantly higher requirements: with the series connection of the cells, system voltages of up to 1,500 V and currents above 100 A are not uncommon. Phoenix Contact provides a comprehensive portfolio of PCB connection technology and high-performance connectors that have been specifically developed for use in battery modules. More details on our portfolio BPC series battery-pole connectors in use Data connectors Reliable data transmission with various connection options. Power connection Pluggable via busbar connection or via battery pole connector. PCB connection technology PCB connection technology for signals, data, and power. To the products To the products To the products Phoenix Contact 27

Functional area: Supply and protect Comprehensive supply concepts TRIO POWER for panel mounting The TRIO POWER power supply provides high power of up to 2.5 kW in a compact housing and combines easy handling with Push-in connection technology. The robust devices can be mounted flexibly on the wall. With their versatile functions, they are ideal for supplying fans and fluid pumps in cooling systems for battery storage systems. To the TRIO POWER power supply Your advantages ✓ High power density and high efficiency with a compact design ✓ Robust and reliable due to dynamic boost with a powerful output characteristic curve ✓ Easy power increases with parallel or series connection with integrated O-ring diode ✓ Reliable supply with 24 V and 48 V versions with increased EMC requirements ✓ Comprehensive monitoring via LED signaling and CAN bus interface 28 Phoenix Contact

AC-coupled battery storage systems are currently the established standard in grid integration. The illustrated system topology shows the potential realization of a reliable supply concept. More details on our portfolio Reliable system solutions for maximum availability The operation of AC and DC loads requires differently designed supply paths. Phoenix Contact provides solutions that ensure a safe and reliable power supply for the control cabinets. Our tailor-made solutions combine advanced technology and high-quality components from the fields of surge protection, power supply, device protection, and energy monitoring into a holistic system. This system approach ensures that critical loads, such as control systems, are supplied with power reliably and safely at all times. This is how we create the basis for the stable and efficient operation of your energy storage solution. Solution comprising QUINT POWER power supply, CAPAROC circuit breaker system, and EMpro energy measuring device Signal protection Power supply AC/DC Redun- dancy UPS Battery Overcurrent protection AC AC surge protection EMC filter Energy measurement Power supply AC/DC Overcurrent protection Power supply AC/DC Overcurrent protection DC load (cooling, pumps, etc.) DC load (controls, meter, etc.) Schematic view of the “Supply and protect” functional area in the AC-coupled battery storage system AC load Phoenix Contact 29

Increased efficiency through direct DC integration DC-coupled battery storage systems are a forward-thinking solution for modern energy infrastructures. They are used in DC power grids to significantly increase energy efficiency and sustainably improve grid stability. Direct coupling to the DC grid eliminates the amount of loss involved in conversion between direct current and alternating current, resulting in higher system efficiency, lower energy losses, and increased power supply. Despite their currently limited distribution, DC-coupled systems bring enormous potential for industrial applications, data centers, and energy-intensive infrastructures. They enable greater independence from the public grid, improve security of supply, and help reduce operating costs in the long term. In order to reliably benefit from the advantages of this technology, a secure power supply concept is also required in the battery storage system. More details on our portfolio Signal protection Power supply DC/DC Redun- dancy UPS Battery Overcurrent protection DC DC surge protection Energy measurement Power supply DC/DC Overcurrent protection DC/AC inverter Overcurrent protection DC load AC load Schematic view of the “Supply and protect” functional area in a DC-coupled battery storage system Phoenix Contact 31

Functional area: Secure communication Reliable communication starts with maximum security mGuard security routers With comprehensive security functions, the mGuard security routers protect your industrial network against unauthorized access by people or malware. The proven mGuard security technology enables you to control and safeguard communication within your production network. To the mGuard security router Your advantages ✓ High level of security through proven mGuard security technology and over 20 years of experience in cybersecurity ✓ TÜV certification in accordance with IEC 62443-4-1 and IEC 62443-4-2 provides independent confirmation of compliance with high security requirements ✓ mGuard devices are difficult to attack due to hardening and the application of secure-by-design principles ✓ Long-term software maintenance and high security through timely updates enable many years of use ✓ PSIRT monitors vulnerabilities on a daily basis. They are evaluated and eliminated based on the severity of the problem 32 Phoenix Contact

Networked battery storage system as a digital node The integration of industrial communication systems into battery storage solutions creates the basis for intelligent, scalable, and secure energy management systems. The use of protocols such as OPC UA, Modbus, and MQTT enables seamless communication between the storage unit, controller, and higher-level systems. This not only enables precise real-time monitoring and control, but also integration into higher-level automation and control systems. This results in greater transparency, improved responsiveness, and a robust basis for predictive maintenance and safety functions. By using advanced industrial commu- nication solutions, the battery storage system becomes an intelligent interface that enables seamless integration into state-of-the-art energy systems. More details on our portfolio IEC 62443-compliant communication solutions in the control cabinet Energy management system Signal conversion Secure communication Server log TC EXTENDER 6004 ETH-2S Reset SD Wired communication ) a ( ) b ( E F E F ) a ( ) b ( A L S D B L S D 1 N A L 3 N A L 2 N A L 4 N A L Secure communication Wireless communication HMI 1 O D D N G 2 O D D N G 1 S U D N G 2 S U D N G US1 GND US2 GND X1 U1 U2 S1 S2 0 0 0 1 J N I 1 2 1 2 ON PoE X2 X3 Communication infrastructure Surge protection Communication switch LNK ACT X1 X2 LNK ACT X3 UL a1 b1 a2 b2 R X4 BK EIP 2688394 NET MOD CO PP RDY D E S1 S2 1 4 2 1 0 2 4 0 681 x10 0 F 2 4 E D C B 689A x1 TM Bus coupler Alarm system Further systems Schematic view of the “Secure communication” functional area in a battery storage system Phoenix Contact 33

Functional area: Connectivity in the control cabinet Robust and smart connection technology HEAVYCON industrial connectors Industrial connectors from the HEAVYCON series are used wherever power, data, and signals need to be transmitted reliably even under extreme conditions. They are characterized by their robust design with high IP protection and easy, tool-free mounting. Power modules enable currents up to 300 A – ideal for powerful applications such as battery storage systems. To the power contact insert module More about click-in latching Your advantages ✓ Save time and money: Reliable, tool-free click-in latching ✓ Fast conductor connection: Conductor connection with Push-in Technology – even with PE contact and when installed ✓ Convenient module latching: Easy installation with clear snap-in mechanism ✓ Individual and space-saving: Combination of different modules ✓ High-performance power modules: Reliably transmit currents of up to 300 A 34 Phoenix Contact

Connection solutions for durable battery storage systems A high-performance connection technology in the control cabinet is the backbone of reliable battery storage solutions. It ensures that energy, as well as control and communication signals, are transmitted between all relevant components precisely, reliably, and with low losses. The use of state-of-the-art connection systems reduces downtimes through easy maintenance and replacement and ensures constant performance under demanding operating conditions. The targeted selection and professional integration of high-quality connection technologies from Phoenix Contact can significantly increase the operational safety, efficiency, and service life of your battery storage system. Our solutions ensure error-free, cost-effective operation throughout the entire service life of your system. More details on our portfolio Easy current acquisition with our test-disconnect terminal blocks Push-X Technology Designed by Phoenix Contact Terminal blocks with Push-X connection technology Direct conductor connection for flexible and rigid conductors with or without ferrules. Test-disconnect terminal blocks Maximum operating convenience for all required test circuits. High-current feed-through terminal blocks Efficient transmission of high currents and voltages with panel thicknesses of 1 to 6 mm. FO splice boxes Up to 12 duplex front connections provide optimum data transmission capabilities. To the products To the products To the products To the products Phoenix Contact 35

Data visualization and energy management Your processes at a glance, anywhere, anytime Data can be retrieved within seconds In addition to the hardware, we also provide a suitable ready-to-use digital solution for visualizing your BESS data in the Time Series Data Service. You will gain an insight into your data within a very short time, which is specifically tailored to your hardware and applications. The dashboards provide comprehensive information on key health parameters such as charging cycles, temperatures, and the general state of the energy storage units. In addition, detailed metrics are provided for charging information, including the current charging level, maximum capacity, and available charging options. A clear overview of energy production and the storage status is of great importance. This information can be called up immediately, without the need to create your own dashboards. This increases efficiency and ensures control of the energy systems at all times. On request, the dashboards can be extended with individual alerts if the limit values are violated. Targeted notifications can be sent by email to the contact persons you have specified. In addition, additional dashboards and metrics can be added, stored in personal folders, and existing templates can be optimized in a targeted manner. More about the Time Series Data Service Your advantages ✓ Retrieval of process data from anywhere, at any time via a scalable cloud service ✓ Fast and precise visualization of all relevant parameters, such as charging information ✓ Universal use and flexible functions with easily configurable, web-based dashboards ✓ Benefits of ready-made dashboards via the TSD Dashboard Library for battery storage systems 36 Phoenix Contact

A central component is the certified feed-in controller in accordance with VDE-AR-N 4110, 4120, and 4130 and NC RfG. It controls the feed-in into the public grid and meets all the technical requirements of the grid operators. The solution ensures grid stability and increases investment security. Future-proof energy management with certified feed-in controllers The energy transition poses new challenges for operators, project planners, and investors. Phoenix Contact provides a powerful solution for intelligent energy management with the open PLCnext Technology automation platform. It enables manufacturer-independent control of various power sources and loads – locally, with scalability, and with cloud capabilities. The system analyzes energy flows in real time, optimizes load profiles, and maximizes self-consumption. In combination with IoT-capable energy measuring devices and cloud services such as Proficloud.io, operators receive full transparency, including automated reports, alarm functions, and AI-supported forecasts. More about feed-in management To the feed-in controller Your advantages ✓ Manufacturer-independent integration of various power sources and loads ✓ Real-time analysis and AI forecasts for optimized energy management ✓ Certified feed-in controllers for medium, high, and extra-high voltage ✓ Cloud-based transparency with Proficloud.io and automated reports State-of-the-art energy infrastructure: generators, storage systems, and loads are networked intelligently Phoenix Contact 37

The role of battery storage systems in the All Electric Society Battery storage systems play a key role in a world where energy is generated entirely from renewable sources and used electrically. They stabilize and make the energy system more flexible, make the availability of renewable energy reliable, and enable new business models. They therefore form the technological basis for an intelligently networked energy future. As the efficiency drivers of the energy transition, they are absolutely essential for making the All Electric Society a reality. The All Electric Society Park Experience live with us in Blomberg, Germany, how energy is generated, stored, and distributed and how energy consumption is optimized – and how all these areas relate to each other. Visit us now 38 Phoenix Contact

Open communication with customers and partners worldwide Phoenix Contact is a global market leader based in Germany. We are known for producing forward-thinking products and solutions for the comprehensive electrification, networking, and automation of all sectors of the economy and infrastructure. With a global network, we maintain close relationships with our customers, something we believe is essential for our common success. You can find your local partner at phoenixcontact.com 0 0 / 0 2 - 9 0 - 5 2 0 2 / 7 6 7 0 6 8 1 R N M 2 0 3 1 1 7 2 1 0 3