The series uses Pylontech’s in-house 588 Ah and 601 Ah cells for grid-side and large commercial and industrial (C&I) storage applications.
From ESS News
Pylontech has introduced its PyOcean series of liquid-cooled battery energy storage systems at SNEC 2026 in Shanghai, targeting grid-side storage, large C&I projects, and emerging AI data center applications.
The company first unveiled the PyOcean platform at the ESIE energy storage exhibition in Beijing in April. At SNEC, it formally presented the system to the wider solar-plus-storage market, positioning it as an “asset-return-oriented” storage product designed around project economics rather than capacity alone.
The PyOcean series includes two main configurations. The PyOcean-M7-6250 offers 6.25 MWh of DC capacity and uses Pylontech’s 588 Ah LFP cells. The larger PyOcean-M9-8000 provides 8.0 MWh of DC capacity and is based on the company’s 601 Ah LFP cells. Pylontech said the system reaches an energy density of up to 426 Wh/L. The 601 Ah cell is rated for more than 12,000 cycles and a round-trip efficiency of 96.5%.
