ST Explains: How giant batteries can help Singapore store excess solar
The conventional lithium-ion batteries store large amounts of energy in a small space. Vanadium flow batteries are suitable for long-duration storage, and have a reduced fire
SINGAPORE – As Singapore seeks to harness as much sunshine as it can to maximise its limited renewable energy sources, it needs to improve technologies that can store excess solar energy from the day. One such technology is energy storage systems (ESS), which are essentially giant batteries packed in containers that store electricity for later use.
Posh Electric specialises in developing ESS that run on sodium-ion batteries. With the grant, the company will study the viability of this newer type of battery for energy storage in Singapore. Sodium is 1,000 times more abundant on earth compared with lithium, which has to be mined in specific areas, such as briny water and rock ores.
VFlowTech's storage system will combine two types of batteries – lithium-ion and vanadium flow – drawing on their respective strengths. The conventional lithium-ion batteries store large amounts of energy in a small space. Vanadium flow batteries are suitable for long-duration storage, and have a reduced fire risk.
1. Container Enclosure Body with Battery Rack This is our foundation-level BESS solution, designed with flexibility in mind. It features a high-quality container enclosure pre-installed with a battery rack, allowing clients to integrate their own battery packs, cooling systems, fire suppression systems, and other components.
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