Sarawak Energy Commissions Malaysia’s First Utility-Scale BESS

Malaysia has marked a major milestone in its energy transition with the commissioning of its first utility-scale battery energy storage system (BESS) by Sarawak Energy. The 60 MW/82 MWh BESS, which was first energized in December 2024, is located at the Sejingkat Power Plant site—soon to be phased out after operating since 1998.

The project signals a new era for energy storage in Malaysia, as the country seeks advanced solutions to support its rising power demand and growing renewable energy sector. BESS technology plays a crucial role in grid stability, peak demand management, and integrating intermittent renewables like solar power.

Datuk Haji Sharbini Suhaili, Group CEO of Sarawak Energy, emphasized that the newly commissioned system enhances Sarawak’s electricity reliability while strengthening Malaysia’s energy security. He added that the initiative aligns with the broader mission of expanding energy access and fostering economic resilience across Sarawak, regardless of geographical location.

Beyond stabilizing the grid, the BESS provides essential services such as primary spinning reserve, voltage and frequency regulation, and power generation optimization. Sarawak Energy is also exploring its potential for integrating more solar power into the grid.

The commissioning comes at a time when Malaysia is accelerating its renewable energy ambitions. In January 2025, the Ministry of Energy Transition and Water Transformation (Petra) launched an additional bidding round under its Large Scale Solar (LSS) program for the development of 2 GW of photovoltaic (PV) power. This follows a similar 2 GW LSS bid in April 2024, highlighting Malaysia’s increasing investment in solar energy.