Climate Startups We Think Can Reach Industrial Scale

Stegra is building commercial-scale green steel around hydrogen and committed buyers. The factory risk is enormous, but the product already has a market.

Fervo adapts horizontal drilling and fiber-optic monitoring from oil and gas to geothermal wells. Familiar industrial methods make the clean-energy case more believable.

Form’s iron-air batteries store electricity for roughly one hundred hours, covering long grid shortages that ordinary lithium systems handle poorly.

Sublime replaces limestone-heavy cement chemistry with an electrochemical process. Cutting emissions inside an unavoidable material is more useful than asking construction to disappear.

Rondo’s brick heat batteries charge when electricity is cheap and release high-temperature heat for factories. That neglected market is both vast and practical.

Redwood recovers lithium, nickel and cobalt while building a domestic battery-material supply chain. Recycling becomes more valuable as local sourcing becomes strategic.

Quaise uses millimeter-wave energy to drill toward superhot rock. Reaching deep heat almost anywhere would expand geothermal far beyond volcanic regions.

Antora stores renewable electricity as heat in carbon blocks and delivers industrial heat or power later. The hardware is simple enough to scale through manufacturing.

Boston Metal uses molten oxide electrolysis to produce steel without coal. It offers steelmakers a new industrial process rather than a promise to consume less.

Twelve converts captured carbon dioxide into chemicals and aviation fuel. Selling familiar molecules gives customers a clearer reason to pay than abstract carbon removal.