Posh Energy’s wholly owned Singapore subsidiary, Posh Electric (“POSH”), has been awarded a grant from the Energy Market Authority (EMA) of Singapore to deploy a 1MWh sodium-ion battery energy storage system (BESS) — part of a S$7.8M package to better harness energy storage in Singapore’s grid.
POSH will lead the development and deployment of the system to manage solar intermittency, in partnership with the Institute of Materials Research and Engineering (IMRE) of A*STAR and Utraco Pte Ltd, at Utraco’s factory. The BESS integrates with 600 kW of rooftop solar arrays to store renewable energy, providing load-shifting capabilities — storing power during off-peak hours and releasing it at peak demand — while mitigating the intermittency of solar generation. The trial is equipped with liquid-cooled thermal management and certified to internationally recognized standards.
“We have, over the years, developed unique battery control hardware and software solutions to manage a wide variety of battery chemistries, including sodium-ion batteries. By harnessing sodium’s natural abundance and integrating it with renewable energy solutions, we aim to provide a sustainable and scalable alternative to conventional battery technologies.”
— Dr. Wesley Zheng, CEO, Posh Electric
Why sodium-ion matters
- Sodium is over 1,000 times more abundant than lithium, with a simpler, lower-impact extraction process — sodium-ion chemistry could meaningfully lower long-run BESS cost.
- SIBs offer strong thermal stability and enhanced safety, operating effectively in higher-temperature environments.
- The deployment is a real commercial trial, not a lab demo — collecting fire-safety and performance data in Singapore’s demanding climate to accelerate broader adoption.
- It arrives as global lithium demand is projected to rise twenty-fold by 2030, putting pressure on supply chains and raising the value of diversified storage chemistries.
What this means for Posh customers
The grant validates the part of Posh that travels to every site: our battery control hardware and software that manages multiple chemistries on one platform. That’s the same intelligence behind our commercial products.
- Posh Station — the smart dispatch, load-shifting, and liquid-cooled thermal architecture proven in this trial is what cuts demand charges and delivers reliable backup power for commercial and industrial sites.
- Energy Management Cloud + Power Monitoring Node — the chemistry-agnostic control layer EMA funded is what lets us optimize and monitor whatever battery best fits your economics.
A national energy regulator and a leading materials research institute chose Posh to prove out next-generation storage in one of the world’s most demanding grid environments. For US commercial and industrial operators, this complements Posh’s lithium iron phosphate (LFP) deployments and establishes sodium-ion as a credible second chemistry for cost- and safety-sensitive projects — backed by a control platform with government-validated results.