The Singapore Energy Market Authority (EMA) awarded Posh Electric a grant to develop a 1MWh sodium-ion (SIB) battery energy storage system — part of a S$7.8M package to better harness energy storage in Singapore’s grid.
Why sodium-ion matters
- Sodium is far more naturally abundant than lithium — sodium-ion chemistry could meaningfully lower long-run BESS cost.
- SIBs offer strong thermal stability and can operate effectively in higher-temperature environments.
- The Singapore trial validates SIBs in a real commercial deployment, accelerating the path to broader adoption.
The project complements Posh’s lithium iron phosphate (LFP) commercial deployments in the US and positions sodium-ion as a credible second chemistry option for cost- and safety-sensitive markets.