LONGi used the occasion of Intersolar Europe to introduce LONGi ONE, a fully integrated solar-plus-storage architecture that the company says marks a departure from the multi-vendor model that has dominated the sector to date.
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The launch pairs LONGi's Back Contact solar module technology with a self-developed 5S energy storage system, engineered as a single coordinated platform rather than assembled from separate suppliers. According to Dennis She, vice president of LONGi, that fragmentation has long been a source of friction for developers, who have typically had to combine hardware and software from different vendors and absorb the resulting inefficiencies and accountability gaps when problems arise.
Distinct applications
LONGi is offering OneBank 2.0, an all-in-one AC/DC system with a nominal capacity of 6.25 to 6.9 MWh, alongside OneMatrix 2.0, a turnkey solution using pluggable string PCS units that can be configured for two, four or eight hours of storage. Commercial and industrial customers are served by the Hi-MO One Pro BESS, aimed at maximising self-consumption and reducing exposure to electricity price volatility, while OneNexus addresses off-grid and weak-grid applications. A unified control layer, comprising OneSync PCS and the OneOS management platform, coordinates the system using AI-driven analysis of market pricing and weather forecasts, functioning as a virtual power plant.
LONGi is pitching the integration as both a financial and technical proposition, citing 93 percent system round-trip efficiency for OneBank 2.0 and OneMatrix 2.0, which it says is four percentage points above typical standalone architectures, alongside cluster-level management that can boost lifetime energy output by up to 8 percent and shorten deployment timelines by 20 to 30 percent.
Strong safety record
Safety claims are anchored in a track record of zero thermal runaways across 13 GW of cumulative deployments, with the OneBank 2.0 using thickened rock wool insulation for fire resistance and a predictive monitoring system, iCCS, designed to flag potential cell risks three to six months in advance.
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The launch is paired with an expansion of LONGi's service infrastructure in Europe. Under what the company calls its 2830 Plan, it intends to establish 30 localised service hubs across major markets by the end of 2028, following the opening of its first European hub in Madrid last March. (TF)
