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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
BESSplus-50/160 | BESSplus-250/0,8 | BESSplus-500/1
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 157 kWh to 1 MWh
Nominal discharge / charging power 50 kW, 250 kW or 500 kW
Operating temperature, -25 ÷ +40 °C
Enclosure protection class according to EN 60529 IP 54
BESSplus-50/160
Container dimensions 5.65 m x 1.8 m x 3 m (L x W x H)
Total weight 8000 kg
BESSplus-250/0,8
Container dimensions 9 m x 1.8 m x 3.4 m (L x W x H)
Total weight 22,300 kg
BESSplus-500/1
Container dimensions 12 m x 1.8 m x 3.4 m (L x W x H)
Total weight 28,350 kg
Li-Ion LFP battery chemistry
BESSplus-50/160
Operating voltage range 440 – 642 V DC
Number of battery cells connected in parallel 1
Number of guaranteed cycles dependent on DoD, operating conditions 3600 – 6000
BESSplus-250/0,8
Operating voltage range 660 – 964 V DC
Number of battery cells connected in parallel 4
Number of guaranteed cycles dependent on DoD, operating conditions 3600 – 6000
BESSplus-500/1
Operating voltage range 660 – 964 V DC
Number of battery cells connected in parallel 5
Number of guaranteed cycles dependent on DoD, operating conditions 3600 – 6000
BESSplus-50/160
Rated Converter Power Charging / Discharging 50 kW
DC Bus Voltage 436 – 797 V DC
Operating Current AC Current from Mains Side 80 A
BESSplus-250/0,8
Rated Converter Power Charging / Discharging 250 kW
DC Bus Voltage 640 – 1100 V DC
Operating Current AC Current from Mains Side 435 A
BESSplus-500/1
Rated Converter Power Charging / Discharging 500 kW
DC Bus Voltage 640 – 1100 V DC
Operating Current AC Current from Mains Side 915 A
Ethernet (ModBus TCP/IP) IEC 61850
Bezpieczeństwo obsługi i instalacji
system kontroli pracy baterii BMS, system Alarmu Pożaru, system gaszenia gazem inertnym
Certificates
Download
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 1 MWh
Housing protection class
according to EN 60529 IP 54
Total weight from 8 to 28.3 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 maintenance
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.
Who Elsta,
what sets us apart
BESS Elsta Plus 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
design
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
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!
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.
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.
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.
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