Sungrow is launching its large-scale energy storage system, PowerTitan 3.0, in Europe, featuring networking capability, next-generation battery cells, DC coupling for co-located solar projects and streamlined commissioning to accelerate deployment.
Sungrow introduces its large-scale energy storage system, PowerTitan 3.0to the European market. With the option to connect the battery to a central inverter on the DC side, the company is responding to the strong demand for co-located solar storage projects. The system was first presented at SNEC in Shanghai in June 2025 and has now been showcased to European developers at an event in Madrid.
The storage system is available in standard container sizes of 10 and 20 feet. The 6-meter version integrates a 1.78 MW power conversion system (PCS) with a 7.14 MWh battery, providing four hours of storage in a single container. A 9-meter version with around 12 MWh, also shown in China, will not be offered in Europe due to logistics and transport costs, which could reduce the project’s profitability. Larger systems in Europe can be achieved by connecting four units together to form an AC block with an output of approximately 7.2 MW and a capacity of 28.5 MWh.
The higher energy density is made possible by new 648 Ah battery cells, with a volumetric energy density of more than 440 Wh/L. A full liquid cooling system and updated software keep all cells within their optimal temperature range, reducing the system’s own energy consumption by approximately 10%, Sungrow said. The company guarantees 10,000 cycles at 60% remaining capacity. The charging status is monitored at rack level and synchronized throughout the system.
“We see a growing demand for standalone projects and a significant increase in co-location projects across Europe,” says Moritz Rolf, VP DACH at Sungrow. The DC coupling option is critical to meeting this demand.
In combination with a PV system and the “1+X” central inverter from Sungrow, no separate PCS or medium-voltage switchgear is required. The company estimates hardware and cabling savings for a 150 MWh project at approximately €1 million.
When connected on the AC side, the system includes an integrated PCS using silicon carbide MOSFETs. The maximum PCS efficiency is 99.5%, with a return efficiency of 92%.
Fast commissioning
The PowerTitan 3.0 is delivered fully assembled and preconfigured. Commissioning takes place largely autonomously and takes approximately one hour per unit. A project can be connected to the electricity grid in about 12 days, without the need for on-site parameterization.
The system can also serve as an AC power source for factory certification testing. If a grid connection is not yet available, the battery can power medium-voltage switchgear, inverters and other equipment, simplifying commissioning and testing logistics.
“Having completed the first phase of the energy transition – the expansion of renewables and their market integration – we are now entering the next phase: electrification, flexibility and security of supply,” said James Li, VP Europe of Sungrow, during a panel discussion.
The ability to form grids was a central theme of the presentation. The system can deliver short-circuit current at a ratio of 1.2, provide instant reserve power within five milliseconds, and contribute to harmonic attenuation, supporting grid strength and stability.
Antonio Arruebo, battery storage analyst at SolarPower Europe, highlighted the growing importance of these features. In addition to frequency services, markets for instant reserve, short-circuit power and black-start capabilities are emerging across Europe. He stressed the need for early development of corresponding markets at EU and national level, faster approval and certification processes for storage systems and reduction of duplicate network tariffs.
Main challenges
Discussions with event participants revealed that while the European battery storage market is generally developing positively, project financing remains a critical bottleneck. Highly leveraged projects are subject to intensive risk assessments by lenders, especially regarding the valuation of future revenues from arbitrage and frequency markets. The long-term development of these markets is difficult to predict and has direct consequences for risk premiums and financing conditions. Multibank financing structures appear to be becoming increasingly common.
From an investor perspective, the stability of revenue streams and technology risks are key. “The critical factors are revenue resilience and the likelihood that market mechanisms will change over time,” said Paula Renedo, Principal Engineer Director at Nuveen Infrastructure, during a panel discussion.
For battery storage, the balance between equity market exposure and contractually committed revenue is evolving. Customer creditworthiness and technological reliability are becoming increasingly important. “We look closely at proven technologies with robust operational experience, especially with regard to availability and degradation over the life of the system,” Renedo added. Nuveen uses conservative assumptions and engages external technical advisors to assess and mitigate these risks.
Regarding price developments in the battery segment and the Chinese government’s announcement that battery cell manufacturers are required to adopt “sustainable prices”, Moritz Rolf noted that comparisons with recent price developments for photovoltaic modules are limited. PV modules have reached a high degree of commodification, while integrated large-scale storage systems involve numerous complex integration steps. As a result, prices equal to fractions of a cent per kilowatt, as seen in the module market, are not expected. After-sales service and local support remain crucial for developers and operators. Sungrow currently employs approximately 800 people in Europe.
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