China and Brunei are redefining their economic partnership by blending traditional energy development with cutting-edge sustainable solutions. From massive solar arrays to high-tech storage systems, the collaboration is driving a transition toward a cleaner industrial landscape in Southeast Asia, providing a blueprint for sustainable industrialization.
The SINAR Project: A Solar Milestone
On February 12, a landmark achievement was reached with the commissioning of the Sustainable Integration of Natural and Renewable Energy (SINAR) project. Located at Hengyi Industries Sdn Bhd on Pulau Muara Besar—a petrochemical joint venture between the Chinese mainland and Brunei—this initiative marks a significant shift in how industrial energy is consumed.
The first stage of SINAR is expected to generate 84,000 megawatt-hours (MWh) of clean electricity annually, covering approximately 7% of the facility's total energy requirements. Beyond efficiency, the environmental impact is substantial, with projected carbon emission reductions of 137,180 tonnes of CO2 per year, which is equivalent to the carbon sequestration of roughly 17,000 hectares of forest.
Technological Innovation in Tropical Climates
Integrating renewable energy into industrial grids often faces geographical and climatic hurdles. In August 2025, the Chinese enterprise Lisiner successfully connected the first phase of a solar-plus-storage power station to Brunei's grid. This system combines a 47.5 MW photovoltaic array with 23.8 MWh of energy storage, providing reliable power to the industrial zone on Pulau Muara Besar.
To combat the humid, hot, and high-salinity environment typical of the region, Lisiner implemented customized containerized energy storage systems featuring intelligent cooling technology. This innovation ensures consistent performance and stability, allowing the system to smooth solar power fluctuations and balance peak and off-peak demand, thereby reducing production costs and fossil fuel consumption.
Expanding Horizons and Future Goals
The partnership is focusing on both green transition and industrial scaling. Supported by the Brunei government and China's Zhejiang Hengyi Group, Hengyi Industries is preparing for a major expansion slated for completion by early 2029. This expansion will nearly triple the refinery's production capacity from 8 million to 20 million tonnes per year, significantly bolstering Brunei's downstream industry and economic resilience.
These efforts align with the targets set by Brunei's Climate Change Office to increase the share of renewable energy to at least 30% of total installed capacity by 2035. As former Chinese Ambassador to Brunei Xiao Jianguo noted, the cooperation is now extending into emerging sectors such as the digital economy, artificial intelligence, and smart cities, creating new growth points and deepening the bilateral ties between the two nations.
Reference(s):
China-Brunei energy cooperation powers a sustainable industrial future
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