SaltFlow Brine Battery Deployed in the Philippines: Powering Remote Islands With Seawater and Iron Electrodes

Australian energy storage company SalGenx announced on May 25, 2029 that the first SaltFlow brine battery energy storage station in Palawan, Philippines, has begun operation. The station uses seawater as electrolyte with iron and carbon electrode materials, providing stable power for 3,000 residents who previously had no grid access.

SaltFlow's storage capacity is 2 MWh, combined with the existing solar microgrid to guarantee three days of continuous island-wide power supply. Compared to lithium batteries, brine batteries contain no rare metals or toxic materials, exceed 15,000 cycle life, and perform stably in hot, humid environments.

SalGenx says SaltFlow's unit storage cost is $42/kWh — one-third of lithium batteries. The company plans to build 100 SaltFlow stations across Southeast Asia and Pacific island nations by 2030, serving 500,000 off-grid residents.