Most thermal batteries depend on high temperatures, often ranging from hundreds to a thousand degrees Celsius, to attain satisfactory electrical round-trip storage efficiencies. Operating at such temperatures presents considerable safety, cost, and life cycle challenges.
FutureBay, however, operates at low temperatures while still achieving round-trip efficiencies (RTE) comparable to those of Li-ion batteries. The innovative intellectual property developed by FutureBay is distinct in its ability to reach this level of performance.
We employ standard refrigeration equipment, such as a heat pump, to establish a cold store slightly below water's freezing point, and solar thermal panels to generate a hot store just under water's boiling point. Typically, it would be challenging to attain an RTE similar to Li-ion batteries with this setup; however, our novel intellectual property enables us to achieve an RTE in excess of 80%.
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