Burgas, Bulgaria,, June 4, 2025 / Prnewswire / – Sigenergy brought together nearly 300 world energy professionals in Burgas to explore the future of commercial and industrial energy storage (C&I). A key point of the event was the visit of a 20 MWh historic project in Malko Tarnovo, powered by the C & I Modular Battery Storage System (BESS). The project highlights the scalability and impact of the real world of new generation storage technology.
In partnership with TRAKIA MT LTD., a main Bulgarian solar company, the system is installed on a solar farm and has hybrid sigenergy C & I inverters combined with the Sigenstack modular storage solution.
Tony XuThe founder and CEO of Sigenergy, said: “Sigenergy’s mission is to accelerate the global transition to clean energy with innovative and scalable storage solutions. This project illustrates how advanced battery systems can stimulate business growth and decarbonization in the sectors.”
Modularity transforming energy storage C&I
Sigenstack introduces a truly modular approach to C & I energy storage – complaint of bulky container systems with stackable 12 kWh batteries. With plug-and-play connectors and a toolless installation, the system eliminates complex wiring, cranes need and heavy machines.
Thanks to this design, the entire 20 MWh system was installed in just 10 days and fully ordered within 2 days. Galina Peycheva-MitevaThe owner of TRAKIA MT LTD., noted: “The installation was incredibly fluid – more as assembling construction blocks than the deployment of the industrial infrastructure. This modular design changes the situation for the energy storage sector C&I.”
Security designed at the pack
Sigenergy C & I BESS solutions define new references for system safety. At the heart of this innovation is the Sigenstack system, designed with safety at all levels. Each 12 kWh battery includes six protective layers: temperature sensors, internal fire suppression units, aerogel insulation, decompression valves, high temperature insulation pads and smoke detectors. This configuration allows early detection of thermal leak in the pack and initiates a quick and localized response in a few seconds.
On the other hand, conventional cabinet style systems generally lack compartmentalization and can take more than a minute to react, increasing the risk of fire spread. By isolating incidents at the module level, Sigenstack considerably improves system reliability and operational security.
Its advanced inverter platform includes an ultra-fast anti-speed protection of 500 ms and long-term arc default switch technology (AFCI) capable of detecting defects up to 500 meters.
To further validate its security performance, Sigenergy has teamed up with the World Intertek Insurance Supplier to publish a white C&I security paper. The results confirm full compliance with UL 9540A and IEC 62619, structural stability under extreme tests and sustained operational efficiency greater than 95%.
Resilience made for zero interview
Built on robust security and a modular design, C & I BESS of Sigenergy supports the autonomous operation 24/7. With an IP66 rating for resistance to dust and water, it offers reliable performance in various environmental conditions. However, conventional cabinet style systems often contain more vulnerable components and the demand for monthly inspections, replacements of half -yearly part and full annual maintenance.
Surveillance in real time via a cloud-based platform provides complete visibility on the state of the system, energy flow and alarms, considerably reducing the need for on-site inspections. Maintenance is also rationalized: defective batteries can be replaced individually within two hours, without complete system diagnosis or technician intervention on site. This reduces downtime, simplifies the logistics of spare parts and minimizes operational costs.
The successful delivery of this project demonstrates Sigenergy’s excellence in installation speed, safety, operational reliability and intelligent management. For the future, Sigenergy undertakes to expand its global footprint, which stimulates the adoption of safer, more efficient and lasting energy solutions worldwide.
Source Sigenergy Technology Co., Ltd.
