Production | TESLA ENERGY GROUP

What is a battery storage system (BESS) used for?

The storage of electrical energy is a key element of modern energy systems, enabling the efficient use of renewable energy sources such as photovoltaic power or energy from wind and water turbines. Energy storage systems optimize power production by storing excess energy during periods of lower demand and utilizing it during peak consumption times. This system not only stabilizes the electrical grid but also, at certain times, increases independence from the electrical distribution network, making it an integral part of sustainable energy supply and effectively enhancing the reliability of power delivery at all times.

Manufacturing and assembly of battery storage systems in Žilina

Our modern manufacturing company in Žilina represents the heart of TESLA ENERGY GROUP – a space where traditional engineering meets the latest technologies, automation, and strict adherence to international standards. In this complex facility, featuring an assembly hall of 3500 m² and an annual production capacity of 250 MWh, we develop comprehensive solutions for battery storage systems. The manufacturing process is carried out in compliance with European conditions and regulations, ensuring not only high technical quality but also a strong emphasis on safety, sustainability, and environmental compatibility.

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Flexibility and scalability of solutions

Our battery storage systems are developed with a focus on maximum flexibility and scalability. An innovative approach to design and sophisticated assembly allow the systems to be seamlessly integrated into existing energy networks and adapted to changing conditions and customer requirements – parameters that can be set via the PLC in the local controller, which is an integral part of each of our storage systems. Regardless of the project scope, every system is thoroughly tested and certified at the end of the production process, guaranteeing not only high quality but also maximum safety and efficiency throughout the entire lifespan of the installation.

Innovative and integrated manufacturing process

The production process begins with robust steel containers that form the structural foundation for the assembly of all key components and their interconnection. Within these containers, modern battery modules, sophisticated water cooling systems, integrated control units, and complex monitoring systems are installed in fixed racks. Modern PLC control systems provide detailed real-time monitoring and ensure optimal functionality, safety, and long-term reliability of the final product. The entire production process is designed so that the individual production stages form an optimal manufacturing flow that responds to the current requirements of the customer and the market, from smaller storage systems to large-scale energy storage projects.

Compliance with strict international standards and certifications

A key pillar of our company is the continuous improvement of quality and adherence to the strictest international standards. Our production processes and systems are certified according to:

ISO 9001:2015 – A quality management system that ensures consistent excellence in all phases of product design and manufacturing
ISO 14001:2015 – An environmental management system that supports a sustainable approach to environmental protection
ISO 45001:2018 – An occupational safety and health management system that places special emphasis on safe working conditions
ISO/IEC 27001:2022 – An information security management system that protects sensitive data and ensures the integrity of information systems
ISO 20000-1 – An international standard for IT service management that guarantees a high level of technical support and the reliability of IT processes
Directive NIS2 – It is a Europe-wide legislation in the field of cybersecurity. It provides legal measures to enhance the overall level of cybersecurity in the EU

These certificates and standards are not only evidence of our technical excellence, but also a commitment to our customers that every solution leaving our production meets the strict international standards of quality, safety, and environmental compatibility.

Comprehensive customer support and service

The production of our battery storage systems is just the beginning of our collaboration with customers. We provide a comprehensive service that includes a 24/7 dispatch center, advanced remote monitoring, and authorized service centers. Our infrastructure, equipped with modern instruments and systems for performance monitoring and analysis, enables the immediate identification and resolution of any technical anomalies and faults. Our professional team is continuously trained and ready to ensure fast and efficient warranty and post-warranty service interventions, thereby contributing to the minimization of downtime and the maximization of overall operational reliability.

Technological integration and continuous development

Our manufacturing company in Žilina is a dynamic environment where a rich tradition of engineering meets the latest technological innovations. We continuously invest in the modernization of our production facilities and the automation of processes, which enables us to keep pace with the latest trends and market demands. Collaboration with leading technology partners provides us with access to innovative solutions in the field of battery cells, inverters, and professional cooling systems. These modern solutions optimize energy consumption, support energy independence and sustainability, and thus contribute to building a modern and safe energy infrastructure.

Strategic expansion, technological partnerships, and European manufacturing with a focus on innovation and sustainability

Our manufacturing company in Žilina not only represents technological progress but also a strategic step in the expansion of TESLA ENERGY GROUP. It is part of a comprehensive business model that includes the operation of distribution systems, investments in renewable energy sources, and the implementation of advanced energy management systems (EMS). Collaboration with leading partners allows for the continuous expansion of our product portfolio and access to the latest technologies, enabling us to tailor solutions to specific market needs and optimize energy costs.
With this strategic approach, we support the energy independence of our customers and create the conditions for the sustainable development of the entire energy infrastructure in Europe. At the same time, we are an integral part of European manufacturing, where modern technologies, precise production processes, and the highest international standards merge into a unique whole. The solutions developed here are designed to optimize energy consumption, contribute to energy independence, and support continuous development. At TESLA ENERGY GROUP, we create products that reflect our commitment to innovation, technical excellence, and environmental compatibility, thereby contributing to the development of a modern and safe energy infrastructure for customers throughout Europe.

Frequently Asked Questions

Here you will find answers to frequently asked questions about our products, their functionality and service requirements.

What is a battery energy storage system (BESS) and what is it for?
BESS (Battery Energy Storage System) is a technology designed to store electricity in batteries, allowing flexible and efficient use of energy according to current needs. Such systems help to stabilise the power grid, reduce dependence on volatile electricity prices and increase energy independence by enabling the efficient use of energy from renewable sources such as solar or wind power.
What are the main benefits of BESS for industry and commercial entities?
The main advantages include:

– Cost optimization – Stored energy can be used at peak times when electricity prices are high, reducing operating costs.

– Backup power source – BESS provides reliable backup during power grid outages, ensuring continuity of production and operations.

– Grid Load Balancing – The battery system can balance the imbalance between generation and consumption, preventing grid congestion and stabilizing supply.

– Renewable Energy Support – Stores excess renewable energy and allows it to be used when resources are not available (e.g. at night).
How long will the battery energy storage system last?
The lifetime of a battery system depends on several factors such as the quality of the batteries used, the intensity of use and the method of maintenance. Standard lithium-ion batteries typically have a lifespan of 10 to 15 years when operated properly. Thanks to advanced energy management technologies, lifetimes can reach even higher values without significant capacity loss.
How is the BESS connected and what are the requirements for its installation?
BESS can be connected to the grid either directly as part of the building energy management or as a stand-alone system with islanding capability. Installation requires space for the location of the battery modules, the right climatic conditions as well as expert installation and connection. An important aspect is also the sizing of the system according to the needs of the building and the typical consumption.
What are the safety precautions when using BESS?
Modern BESS are equipped with advanced safety mechanisms including:

– Thermal Management – Ensures that the batteries operate within the optimum temperature range.

– Overload and short circuit protection – Prevents system damage and reduces the risk of fire.

– Early Warning System – Monitors the status of individual battery cells and alerts you to any irregularities, reducing the risk of failure.
Can BESS be expanded if my energy needs increase?
Yes, most modern battery systems are modular and scalable. This means that additional battery modules can be added as needed to increase the capacity and performance of the entire system. However, this expansion requires expert consultation and adaptation of the system to the new conditions to ensure optimal integration.

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