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Toshiba Implements Hybrid Battery Storage System in Mongolia
Toshiba is deploying an innovative hybrid battery energy storage system for the Darkhan microgrid in Mongolia. This system combines a fast SCiB battery with a capacity-focused BESS to stabilize the grid and integrate renewable energy. The installation, funded by the Japanese government, is expected to be operational by December 2027.
Toshiba has developed an advanced hybrid battery energy storage system (BESS) for the Darkhan microgrid located in northern Mongolia. This project, anticipated to commence operations in December 2027, is supported by a grant aid package from the Japanese government. The installation will take place at the Darkhan substation and will be operated by the state-owned National Power Transmission Grid (NPTG).
The installation features a combination of two distinct battery types to address diverse grid needs. A 2 MW / 667 kWh SCiB battery, manufactured by Toshiba and utilizing a lithium titanate oxide (LTO) anode, is designed for high-power applications. This 'power-type' battery can discharge in approximately 20 minutes. Complementing this is a 2 MW / 15.33 MWh capacity-type battery system, with a discharge duration of 7.66 hours, which is expected to be sourced from a third-party LFP supplier.
The microgrid will link a 10 MW solar PV plant with this hybrid storage system. The SCiB unit is specifically intended to assist in managing high-frequency solar ramp control. The larger battery system will be employed for peak shifting and balancing supply and demand over extended periods. This dual architecture aims to reduce cycling stress on the capacity-type battery, allowing it to be utilized more efficiently for longer-duration applications and potentially extending its lifespan.
Toshiba is also providing an advanced energy management system (EMS) that will accurately forecast solar generation and power demand. This system will optimally coordinate the operation of both battery systems and enable remote monitoring and control from NPTG's headquarters and its Darkhan branch.
The deployment of this system aligns with Mongolia's objective to increase the share of renewable energy in its total installed generation capacity to 30% by 2030. This project contributes to the stability of the Mongolian electricity grid.
This report is based on information from pv magazine.
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