The technology company Sigenergy has launched a 20 MWh storage system in Malko Tarnovo, Bulgaria. This deployment was completed in just 10 days, without the need for cranes or complex foundations. Possessing a lightweight, stackable design, each 240 kWh SigenStack unit could be installed efficiently and quickly.
20 MWh energy storage system
The installed system includes 90 SigenStack battery units and has been designed to provide stable operation, even under varying load conditions. In addition, its modular architecture allows it to be adapted to different needs, from commercial applications to virtual power plants. Such flexibility has been essential to its rapid adoption in markets such as Ireland, Australia and South Africa.
During the “Sigenergy Day Europe 2025”, held on June 3, the company highlighted the importance of efficient storage technologies to cope with grid volatility.
Since Sigenergy was founded, we have always held one conviction: the question is never whether something can be done, but whether it can be done better.
Through a modular architecture, a self-developed technology stack and an intelligent platform, we have proven to the world that we can deliver results faster, more reliably and with the resilience to meet complex real-world challenges.
Tony Xu, founder and CEO of Sigenergy.
Qurrent “s Fredric Anderberg praised the system ” s performance in virtual plants (VPP). He also highlighted its ability to quickly connect to the grid and maintain high performance in real time. Bartłomiej Majsik, from Gaia Solar, mentioned that the system’s integrated artificial intelligencehas the ability to optimize consumption according to dynamic pricing and generate significant savings.
From Trakia MT, its CEO Galina Peycheva-Miteva praised the efficiency of the deployment and confirmed her company’s interest in expanding collaboration with the company. The Bulgarian National Control Center also recognized the system’s potential as a key tool for addressing the growth of renewables.
The implementation of 240 kWh SigenStack batteries. Source: Sigenergy
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Source and photo: Sigenergy
