C20

C20

The SieStar C20 BESS is a modular 20-foot container with an energy capacity up to 1935 kWh. The storage capacity is expandable from 4 to 9 clusters, each with 215 kWh, and the bi-directional inverter can be modularly increased to 500 kW. The integrated EMS, based on Siemens technology, supports both on- and off-grid applications, such as peak shaving and load capacity buffering. The container is designed to be safe and efficient with fire-resistant, climate-controlled compartments and reliable LiFePO4 battery modules. Ideal for flexible and sustainable energy solutions.

C20
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Modular

SieStar battery energy systems are prepared for expansion within the existing enclosure. The system can expand from one to several units, allowing the storage capacity to grow with your business needs and increasing energy requirements.

Integrated EMS

The SieStar Energy Management System (EMS) manages energy flows behind the meter and regulates consumption and feed-in to the grid in accordance with the contracted capacity. It offers functions such as peak shaving, load shifting, emergency power supply, smart charging, (thermal) energy buffering and energy trading.

Safety

The systems are built in accordance with PGS37.1 and offer 60 minutes of fire resistance. Equipped with a two-stage fire alarm system with PAC transmission and remote emergency stop, they are inaccessible and switch off automatically when the service door is opened.

LiFePO4 batteries

SieStar offers up to 10 years or 6,000 cycles warranty. The LFP battery cells are assembled in Terneuzen and offer optimal stability and energy transfer. Benefits include a long service life, fire safety and active balancing for 15% longer service life.

Modular
Integrated EMS
Safety
LiFePO4 batteries

Specifications

Discover the C20 and its specifications.

BESS
Cluster
Battery Module
Battery cell
Dimensions (L*W*H) 6058* 2438 * 2591 mm
Weight (ca.) 8,000 to 22,000 kg
Smart EMS Safety-PLC monitoring via 10’’ HMI and app
Communication protocols Modbus TCP, API’s, Profibus, Profinet and more
PCS – bi – directional 600-900 V DC – 400 V AC
Flexible configuration 62.5 to 500 kW by means of 1 to 8 modules
Battery to system protection to 3-level BMS
in accordance with PGS37.1
BESS
12 battery modules with 1 DC control box per cluster
860 to 1935 kWh by means of 4 to 9 clusters
Nominale voltage 768 V DC
Smart active balancing (high electric current) Results in ca. 15% longer lifespan and shorter charging times
Cluster
17.92 kWh
Nominale voltage 768 V DC
Type of cooling Forced ventilation – PWM monitored
Dimensions (L*B*H) 900*440*240 mm (max. 952*483*240 mm)
Weight 137 kg
Certification IEC62619, UN38.3
Battery Module
LiFePO4 (LFP) prismatic
Nominal voltage 3.2 V DC
Nominal capacity 280 Ah
Battery cell

Download the factsheet

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Download the leaflet

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Suitable for your situation

There is a suitable solution for every company, problem and situation. At SieStar, we believe in tailor-made solutions specific to your problem. Together, we take control of your energy.

Applications