-
+48 12 350 13 50
Mon-Fri, 8AM - 6PM
BESS Elsta
economical energy storage
Optimal energy storage
for industry and photovoltaics
Elsta’s proprietary energy storage solution with its own BMS, EMS, dedicated special inverters. This combined with the experience of electric containers guarantees high quality supported by extensive experience. Elsta’s solutions work primarily in industrial plants that want to stabilize daily fluctuations in the load of the power connection and reduce costs.
High standard of fire protection
A product scalable in terms of size and power
EMS system, minimizing energy consumption and fluctuations
Specification of energy storage
BESS Elsta series
BESS-250/0,8| BESS-500/1 | BESS-500/2
General parameters
Connection to the power grid depending on the transformer matching the 3-phase system, 50/60 Hz, voltage LV up to 800 V or MV up to 20 kV
Nominal energy from 800 kWh to 2 MWh
Nominal discharge / charging power 250 kW or 500 kW
Operating temperature, -25 ÷ +40 °C
Construction
Housing protection class according to EN 60529 IP 43
BESS-250/0,8
Container dimensions 20 ft. HC (~6.05 x 2.45 x 2.9 m)
Total weight 14,260 kg
BESS-500/1
Container dimensions 30 ft. HC (~9.1 x 2.45 x 2.9 m)
Total weight 18,035 kg
BESS-500/2
Container dimensions 40 ft. HC (~12.2 x 2.45 x 2.9 m)
Total weight 29,395 kg
Energy storage battery
Li-Ion LFP Battery Chemistry
BESS-250/0,8
Operating Voltage Range 627-806 V DC
Number of Battery Cells Connected in Parallel Up to 4
Number of Guaranteed Cycles Depends on DoD, Operating Conditions 3600 – 6000
BESS-500/1
Operating Voltage Range 627-806 V DC
Number of Battery Cells Connected in Parallel Up to 5
Number of Guaranteed Cycles Depends on DoD, Operating Conditions 3600 – 6000
BESS-500/2
Operating Voltage Range 627-806 V DC
Number of Battery Cells Connected in Parallel Up to 8
Number of Guaranteed Cycles Depends on DoD, Operating Conditions 3600 – 6000
DC/AC Converter
BESS-250/0,8
Rated power of the converter charging / discharging 250 kW
DC bus voltage 500 – 820 V DC
Operating current AC current from the grid side 361 A
BESS-500/1
Rated power of the converter charging / discharging 250 kW, 500 kW
DC bus voltage 600 – 900 V DC
Operating current AC current from the grid side 361 A, 722 A
BESS-500/2
Rated power of the converter charging / discharging 500 kW
DC bus voltage 600 – 900 V DC
Operating current AC current from the grid side 722 A
Communication
Ethernet (ModBus TCP/IP) IEC 61850
Safety
Operation and installation safety
BMS battery management system, Fire Alarm system, and inert gas extinguishing system
Certificates
- power electronics systems: RfG 2016/631
- battery banks: PN-EN 62281, PN-EN 62619
- technical containers: PN-EN IEC 62933-5-2, PN-EN 62262:2003, PN-EN 60529:200
- fire resistance class: REI60
- high degree of protection: IP54 or IP55
- lithium cells in safe and proven LFP technology
Download
Dedicated EMS system
minimizing energy consumption and fluctuations
Thanks to a team of programmers and automation engineers, we offer advanced and ergonomic software applications for control in the broadly understood industry and production automation.
3-phase system, 50/60 Hz,
LV voltage up to 800 V
or MV voltage up to 20 kV
Nominal energy up to 2 MWh
Housing protection class
according to EN 60529 IP 43
Total weight from 14.3 to 29.4 tons
Li-Ion LFP batteries
Guaranteed cycle
count up to 6,000
Communication
Ethernet (ModBus TCP/IP)
IEC 61850
Safety
Battery management system (BMS),
Fire alarm,
Inert gas extinguishing
Full documentation, commissioning,
logistical, technical and
after-sales support, and service
Flexible project
implementation process
Elsta’s comprehensive sales cycle provides full support at every stage of implementing energy storage solutions. From initial diagnostics of needs, through the development of a technical and economic concept, to production, installation and after-sales services – each step is tailored to the individual requirements of the customer.
Thanks to our experience and expertise, we guarantee high quality, timeliness and satisfaction with the solutions delivered, supporting energy transformation and sustainable development.
We know that energy storage is not just a product.
It is a long-term relationship, agile management and freedom of choice thanks to proven, safe and modern solutions.
We accompany our clients in consciously designing a sustainable future.
We build long-term relationships that enable the development of your business by ensuring that our storage facilities exceed your needs and development plans.
We focus on modularity and flexibility of solutions.
Why Elsta,
what sets us apart
- many years of experience – we have over 30 years of experience in energy and industrial electronics, including the design and production of e-house energy containers, with particular emphasis on energy conditioning
- the highest quality – we test our devices at every stage of the production process, verifying their correct operation and compatibility with other infrastructure, we conduct solution testing and meticulous quality control; the highest quality is confirmed by the obtained certificates
- modern technologies – we use modern technologies, including Li-Ion cell technology, which enables energy storage in batteries and its release from direct current to alternating current using a DC/AC converter, ensuring bidirectional conversion – discharging and charging of batteries
- safety of operation, installation, use – we care about your safety and comfort of use as well as the durability of our warehouses even in extreme conditions (REI60 fire resistance class, high degree of protection IP54 or IP55, lithium cells in safe and proven LFP technology, thermal conditioning system, detection and protection in the event of fire)
- RND and a multidisciplinary team of experts – as a multidisciplinary engineering team, we support the entire solution for the construction, electrical, software and start-up parts, we provide technical support during acceptance; together with academics from Polish universities, we conduct research and development work that enables further optimization of the offered solutions
- ecology – we take an active part in the energy transformation by creating solutions that build a sustainable future for your business
- individual approach – your needs and conditions are unique, we know that, which is why the offered solutions are dedicated only to you
- service – our cooperation begins at the stage of diagnosing your needs, we accompany you both during implementation and later use of the warehouse, providing necessary updates and optimizations
- diagnosing individual needs – we help diagnose your needs and design the optimal solution for you
- comprehensive implementation – we know how important comprehensive service and central management are to you, which is why we have focused on a multidisciplinary team of experts and a business model supporting long-term relationships
- modularity – the modular design of our warehouses means convenient transport and assembly, but above all flexibility in the event of further expansion
- design – modern, unique design allows for personalization of colors and markings
BESS Elsta energy storage
sales process
Needs
diagnostics
We start cooperation with a thorough analysis of your needs. Our experts will conduct detailed diagnostics to understand the specifics of your facility and the goals you want to achieve. Thanks to this, we will be able to propose solutions that are perfectly tailored to your requirements.
Technical and economic
concept
Based on the information collected, we develop a concept that takes into account both technical and financial aspects. Our experience allows us to create optimal solutions that will not only meet your expectations, but will also be economically beneficial.
Personalized
project
Each project is unique, which is why we adapt it to your individual needs. Our team works with you at every stage to make sure that all elements are in line with expectations.
Solution selection
and delivery completion
We choose the best technological solutions that will be a perfect fit for your project. Our knowledge and experience allow us to effectively complete deliveries, which guarantees that everything needed to implement the project will be available on time.
Production, electrical assembly
i and in-house programming
All key system elements are manufactured and assembled at our headquarters by a qualified team of specialists. Thanks to this, we have full control over the quality and timeliness of implementation. Our skills in electrical assembly and programming ensure that each project is carried out with the utmost care.
Installation
on site
When everything is ready, we begin transport and installation on your site. Our technicians, with extensive experience, ensure that the process runs smoothly and without disruptions. We always focus on safety and minimizing inconvenience to our customers.
After-sales
services
Our cooperation does not end with installation. We offer comprehensive after-sales services to ensure that your system works flawlessly. We are always available to answer your questions and provide support whenever you need it. Your trust is most important to us!
What is an energy storage
Energy storage is the key to the future of energy and sustainable business. It offers independence, ensures continuity of energy supply and optimizes the costs of its acquisition and production. The BESS Elsta system is an innovative solution based on proven container housings for electrical devices.
BESS Elsta storages are available in the form of classic 20, 30 and 40 ft containers, as well as in a proprietary, modular steel housing, adapted to specific parameters. Thanks to modern technologies, Elsta energy storages are fully scalable, which allows for flexible adjustment of power and output energy to changing needs.
Related products
BESS Elsta Plus
premium energy storage
Elsta’s proprietary energy storage solution with its own BMS, EMS, dedicated special inverters. This combined with the experience of electric containers guarantees high quality supported by extensive experience.
Software,
SCADA and HMI applications
Depending on the needs and size of the device or object, we offer tailored HMI and SCADA systems in the form of a user-friendly and fully functional human-machine or human-process interface.
Elsta PCS inverter
inverter for energy storage
Bidirectional AC/DC converter, designed for photovoltaic systems. It offers a series of types with an efficiency of 250 A (≤150 kW) and 500 A (≤300 kW) with the possibility of parallel operation, which allows for flexible power adjustment.
Contact us
We will be happy to answer your questions
and select the right solution for you.
Operating since 1988, Elsta provides comprehensive solutions in the areas of electrical engineering, automation and energy, implementing projects both in Poland and on foreign markets around the world.
Discover our products
Elsta sp. z o.o.
32 Janińska St., 32-020 Wieliczka, PL
CALL US
+48 12 350 13 50
general e-mail office@elsta.pl
e-mail for offer inquiries rfq@elsta.pl
A company registered in the District Court for Kraków Śródmieście in Kraków, XII Commercial Division of the National Court Register KRS 0000100416 REGON 356526640, NIP 6831865970, BDO 000068605,
Share capital PLN 295 100.00 fully paid up.
We will be happy to answer your questions
and help select the right solution,
please contact us.
OR CALL US
+48 12 350 13 50
Elsta sp.z o.o. © 2025