Aqua-Cell Energy is building grid-scale saltwater flow batteries to store clean energy up to 48 hours to address growing electricity demand and renewable power projects. Salt water is the most affordable electrolyte, without safety / supply chain risk. The battery hardware is mass-produced in the water treatment industry, which we convert to a flow battery, and will commercialize with <20% of the time and capital. In the Caribbean, solar + saltwater batteries will pay off in < 3yrs. Aqua-Cell raised >$2M in grants and revenue for pilots, (2 customers secured), and is raising a $1.5M pre-seed round to deliver these.