Europe’s C&I energy storage market has entered a new phase. For many businesses, the question is no longer whether to deploy energy storage, but how to deploy it efficiently, operate it intelligently, and generate stable long-term returns. Yet several challenges remain: electricity prices are increasingly volatile; solar generation does not always align with peak demand; installation and commissioning can be time-consuming; and cross-border service and maintenance often add additional operational complexity. All of these factors can directly impact project returns and operational efficiency.

Building on successful deployments across multiple European markets with the PowerHill 215kWh (air‑cooling) and 233kWh (liquid‑cooling) models, Dunext now introduces the new PowerHill 261kWh, a next-generation liquid-cooling all-in-one C&I BESS designed around three priorities: higher value, stronger safety, and simpler operation.

What European C&I customers truly need is not a standalone battery, but a clearly bankable energy asset that delivers the right capacity without over‑investment, generates visible returns without high maintenance costs. Dunext’s answer is clear: add value where it counts, cut cost where it doesn’t.

More Capacity, More Revenue Streams

The PowerHill 261kWh uses 314Ah high‑capacity LFP cells, delivering 261kWh per cabinet with a round‑trip efficiency of ≥90%. It supports up to 10 units in parallel, scaling flexibly to MWh capacity. PowerHill 261kWh is designed to help customers capture value across multiple market opportunities. Its dual‑meter solution is compatible with third‑party inverters, a key feature that enables seamless integration into both new and existing PV systems, while PV generation data can be visualized directly on the DuLink platform for clear performance tracking. The system supports a range of operating modes including maximized self‑consumption, time‑of‑use scheduling, electricity market trading and backup power, and can be configured to enable zero‑feed‑in and demand control. Auxiliary power can be drawn from the cabinet or from an external source and metered separately, with a dual‑supply transfer switch that optimizes overall returns. For on/off‑grid applications, the system offers two switching modes: seamless switching (<20ms) ensures safer, more stable power for critical loads, while a wall‑mounted seconds‑mode (20s) provides a cost‑saving alternative. One system with multiple value streams gives customers a clearer view of long‑term asset value, not just upfront payback.

Comprehensive Active Safety: Protecting Asset Performance

Safety standards for energy storage in Europe are tightening. Insurers, financial institutions, grid operators, and project owners are all paying greater attention not only to technical compliance, but also to the operational risks behind it, from unplanned downtime and fire hazards to insurance exposure and asset interruption. The PowerHill 261kWh addresses these concerns through a full-chain active safety architecture spanning the cell, electrical system, and fire-protection layers.

At the cell and pack level, the system uses Tier 1 LFP cells, six-sided pack insulation, and an IP67-rated battery pack design. At the electrical level, a six-layer protection architecture covers the entire power path from the battery pack and high-voltage box to the PCS and grid connection. Pack-level isolation helps prevent faults from spreading, while microsecond-level PCS protection enables rapid interruption when abnormal conditions are detected. At the fire protection level, PACK‑level aerosol fire suppression responds in milliseconds, while a dry contact interface connects to building fire systems for remote alarm capability.

For Dunext, safety is not simply about meeting compliance requirements. It is about protecting the customer’s asset and supporting reliable operation throughout the system lifecycle.

Simpler Installation, Commissioning and Maintenance

Labor cost remains one of the most significant hidden expenses in the European C&I storage market. Complex installation, lengthy commissioning, specialist engineer scheduling, and cross-border troubleshooting can all add time and cost well beyond the initial equipment purchase.

The PowerHill 261kWh simplifies every stage. Installation: the all-in-one cabinet design minimizes complex external wiring and enables faster on-site deployment. Commissioning: via the DuLink platform and Smart EMS, site start‑up takes just 30 minutes, with system response time below 100ms. Operation: 24/7 unattended operation with cell‑level real‑time alerts and minute‑level data updates to improve fault visibility and reduce response time. Maintenance: automatic coolant replenishment eliminates the need for coolant replacement for 10 years, reducing maintenance time by 90%. The low‑GWP refrigerant R513A meets EU F‑gas regulations ahead of requirements. With local spare parts warehouses and service teams across Europe, the company provides on‑site support within 48 hours in core markets. Dunext takes on the complexity of R&D and engineering, so customers can enjoy simplicity and efficiency.

Built for the Real Needs of European C&I Storage

Safety, returns, and simplicity, these are the core values of the PowerHill 261kWh. And they are exactly what European C&I customers care about most: Is the system safe? Can it deliver stable returns? Will it be easy to operate and maintain?

Dunext answers with proven capability: Safety comes from full-chain active protection rather than isolated safety features. Returns come from access to multiple operating scenarios rather than a single revenue stream. Ease of use comes from simplified installation, intelligent operation, and reduced maintenance, not just a slogan.

By adding value to product performance and customer returns while subtracting operational cost and complexity, Dunext’s PowerHill 261kWh empowers European C&I customers with high‑value, low‑burden, stable‑return energy assets, unlocking new value in storage investment.