Prague, Czech Republic, December 2025 — AlphaESS, a global leader in Накопичення енергії рішення and a BloombergNEF Tier 1 certified manufacturer for Q4 2025, has formally signed a cooperation agreement with EPC partner Eltodo a.s. to deliver a combined 320 MWh large-scale Система накопичення енергії на акумуляторах (BESS) across two strategic sites in the Czech Republic: BESS Chvaletice and BESS Kladno.
Once completed, the projects are set to become the largest Stand-alone Накопичення енергії installations in the country, marking a significant step forward in the Czech Republic’s енергія transition and grid modernization efforts.
Aster 5000 Deployed at Scale to Підтримка National Grid Stability
Under the agreement, AlphaESS will supply 46 units of Aster 5000 for the Chvaletice site and 18 units of Aster 5000 for the Kladno site. The системи will primarily Підтримка frequency regulation and other grid ancillary послуги, enhancing the reliability, flexibility, and responsiveness of the regional енергія network.
Project Назадground and Application Needs
As the Czech енергія система undergoes rapid transformation, the demand for flexible grid regulation resources is steadily increasing. With renewable енергія capacity expanding quickly and traditional balancing units being gradually phased out, the клієнт has chosen to deploy AlphaESS large-scale Накопичення енергії системи to provide fast frequency regulation, stabilize grid frequency, and deliver key ancillary послуги such as voltage Підтримка and reserve capacity. These large-scale BESS installations also strengthen regional grid resilience, mitigate fluctuations caused by сонячний and wind generation, and enable higher renewable енергія penetration.
Driven by these core needs, the Chvaletice and Kladno Накопичення енергії projects were developed to provide essential flexibility and stability Підтримка for the Czech grid.
A Collaboration Built on Technical Expertise
To meet the demanding requirements of the Czech grid, AlphaESS is supplying the Aster 5000, a 5MWh liquid-cooled Накопичення енергії система designed for reliability, rapid deployment, and long-term grid Підтримка. The система features a fully integrated 20-foot design that combines the акумулятор система, BMS, EMS, and fire-protection система into a single container, significantly reducing onsite installation and commissioning time while enabling fast, large-scale rollout.
The Aster 5000 is built with a comprehensive multi-layer safety architecture that ensures robust protection from the cell level to the система level. Its liquid-cooling design, advanced thermal керування, and coordinated protection mechanisms deliver stable operation even under demanding grid-side conditions. To guarantee delivery quality, every unit undergoes a full factory acceptance test (FAT) before shipment, a level of rigor rarely seen in large-scale Накопичення енергії manufacturing.
In addition, the система incorporates cell-level bi-directional active balancing, enhancing operational efficiency and extending система lifetime by more than 10%. This makes the Aster 5000 ideally suited for long-duration grid applications and large Комерційний and Промисловий scenarios that require high performance and strong operational resilience.
Eltodo a.s., acting as the EPC, will oversee site development, civil engineering, and project execution. The combined expertise ensures high technical robustness, rapid delivery, and long-term operational reliability.
A Strategic Milestone for AlphaESS in Europe
With a growing portfolio across the EU region, the Chvaletice and Kladno projects reinforce AlphaESS’s position as a leading global supplier of Мережевого масштабу Накопичення енергії рішення.
“These projects not only mark a major milestone for the Czech Republic, but also reflect AlphaESS’s expanding role in enabling grid modernization and renewable енергія integration across Europe,” said Alfred Wang, CEO of AlphaESS. “We are proud to work with Eltodo and Підтримка the country’s transition toward a resilient, low-carbon енергія future.”
Про AlphaESS
AlphaESS is a global leader in Накопичення енергії рішення, serving Житловий, Комерційний & Промисловий, and Мережевого масштабу applications. With advanced liquid-cooling technology, intelligent система control, and strong execution capability, AlphaESS has deployed системи in more than 100 countries.
As a BloombergNEF Tier 1 certified manufacturer, AlphaESS provides not only high-performance накопичення products but also professional end-to-end послуги, including pre-sales consulting, technical Підтримка, and localized after-sales сервіс, ensuring long-term safety, stability, and efficiency throughout the entire project lifecycle. AlphaESS is committed to accelerating the global transition toward sustainable and intelligent енергія системи.
