Tidal Metals

Tidal Metals is a deep-tech company founded by three PhD scientists from MIT, Princeton, and Wisconsin that has developed patented breakthrough technology for producing critical minerals and metals from seawater and brines with no waste, no carbon emissions, and no environmental harm. The company's first application extracts magnesium metal from seawater using only electricity — a carbon-neutral, chemically-free process that concentrates magnesium salt via filtration, crystallization, and dehydration followed by electrolysis. With 90% of global magnesium supply controlled by China and zero U.S. primary production, Tidal Metals aims to restore domestic supply of this critical structural metal essential for defense, aerospace, automotive, and hydrogen storage applications.