Maximizing Energy in Minimal Space: How Hoymiles HoyUltra 2 Powers a Commercial Landmark in Slovenia

At a premier shopping complex in Slovenia, four Hoymiles HoyUltra 2 fully-liquid-cooling battery units were delivered and commissioned in just one day. Featuring a slim design that reduces floor space by 35%, the system integrates seamlessly and quietly into the commercial landscape. With intuitive status indicators and 24/7 remote monitoring, Hoymiles delivers a high-response energy solution that builds lasting customer trust.

The Challenge of Urban Energy Transition

Expanding Sustainability Within Tight Footprints

In the heart of Slovenia, nestled south of the Alps, a prominent mixed-use complex—comprising a bustling shopping center and modern office spaces—faced a dilemma common in European urban areas. As the facility sought to upgrade its energy infrastructure to reduce costs and enhance resilience, it encountered significant spatial constraints.

Urban commercial sites in Europe are notoriously compact. Traditional Energy Storage Systems (ESS) are often bulky, requiring extensive foundation work and large clearance zones for heat dissipation. The project owner needed a high-capacity solution that could:

• Integrate into a high-traffic environment without disrupting mall operations.

• Fit into limited installation areas without sacrificing valuable commercial real estate.

• Operate quietly and safely in close proximity to customers and employees.

Strong Performance Delivered via a Slim Design 

The HoyUltra 2 All-in-One Liquid-Cooling System

To address these challenges, Hoymiles deployed four HoyUltra 2 fully liquid-cooling battery cabinets, creating a robust 1.044 MWh Commercial & Industrial (C&I) energy storage system. The solution redefined how energy storage fits into the urban aesthetic:

• Ultimate Spatial Efficiency: The HoyUltra 2’s slim, compact body allowed for a double-row arrangement sharing a single service aisle, saving 35% of floor space compared to conventional systems. With only 0.3m rear clearance required, it maximized every square inch of the site.

• Engineered for the Environment: Equipped with an IP55 rating and a specialized dual-circulation liquid-cooling architecture, the system ensures stable power output even in 50°C ambient temperature. Furthermore, its ultra-quiet operation (as low as 60 dB) ensures the customer experience remains undisturbed.

• Rapid, Plug-and-Play Deployment: Unlike systems requiring complex civil engineering, the HoyUltra 2’s modular design allowed for the delivery and installation of all four units in just a single day, minimizing on-site construction time and operational downtime.

By combining "Sleekness" with "Strength," the Slovenia project serves as a global benchmark for C&I energy storage. It proves that with Hoymiles HoyUltra 2, businesses no longer have to choose between aesthetic harmony and high-performance energy independence.

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