Sungrow has commissioned the 100 MW/400 MWh Santong Battery Energy Storage System (BESS) in Terengganu, marking Malaysia’s first grid-forming, grid-connected utility-scale battery energy storage project. Developed and owned by Tenaga Nasional Berhad (TNB), the project is designed to enhance grid resilience, improve system stability and support the integration of renewable energy into Malaysia’s national electricity network.
Sungrow supplied 90 units of its PowerTitan 2.0 liquid-cooled energy storage system together with its Facility Energy Management System (FEMS) to enable intelligent energy dispatch and flexible grid support. The Santong BESS is designed to achieve a first-year round-trip efficiency of 88% and supports both grid-following and grid-forming operating modes. The system also incorporates advanced grid services, including Fast Frequency Response (FFR), voltage and reactive power control, rapid active power ramping and black start capability, enabling the restoration of grid operations following a complete power outage without an external power source.
According to Sungrow, the project was delivered on an accelerated schedule and established one of Malaysia’s fastest battery energy storage grid connection timelines. The 100 MW full-power discharge test was successfully completed, and the project is expected to provide grid support equivalent to the electricity demand of approximately 40,000 households across Malaysia’s East Coast. The commissioning represents a significant milestone in Malaysia’s efforts to modernise its electricity infrastructure and expand utility-scale energy storage as part of its clean energy transition.