Green Tech Companies Are Wrapping Themselves in Critical Minerals to Stay Alive

Climate tech startups are nothing if not adaptable. With federal support for decarbonisation effectively on life support in the US, a growing number of these companies are rebranding their value propositions around topics that actually get traction in Washington right now: energy supply, data infrastructure, and critical minerals.

Boston Metal is a decent case study. The company built its reputation on molten oxide electrolysis, a process that uses electricity rather than coking coal to produce steel, cutting emissions substantially. Last year it hit a real milestone, running its pilot reactor in Massachusetts and producing an actual tonne of steel. Promising stuff.

Then reality intervened. Greener steel is a hard sell when the industry already runs on razor-thin margins and there's no federal carrot dangling in front of buyers. So Boston Metal just closed a $75 million funding round, and the pitch has changed. The company is now going hard after critical metals, specifically niobium, tantalum, chromium, and vanadium, materials used in aircraft engines, high-grade alloys, and electronics that the US government has formally designated as strategically important.

"By deploying in the critical metals industry where we can go very fast, we generate the resources to continue with the development of steel," said CEO Tadeu Carneiro. Translation: sell what Washington wants to buy, and use the revenue to keep the long-term climate mission from dying quietly in a Massachusetts warehouse.

It's a rational pivot, even if it's a little dispiriting. The emissions benefits from cleaner niobium production are nowhere near what greener steel would deliver at scale. But a company that runs out of cash helps nobody.

Boston Metal isn't alone in this manoeuvre. Brimstone, a California-based startup with a novel approach to cement production, had a Department of Energy grant cancelled last year as part of a broader $1.3 billion cut to cement-related projects. Another cement startup, Sublime Systems, lost funding in the same sweep. Brimstone's response was to point out, correctly, that its facility wouldn't just make cement. It also produces alumina, a precursor to aluminium manufacturing, and one that the US currently imports heavily. The company's website now leads with critical minerals rather than climate.

Even carbon dioxide removal companies are angling for a slice of this. Some are pitching partnerships with mining operations, offering to clean up active or abandoned mine sites or improve operational efficiency. The climate angle is still there, just buried a few paragraphs down.

This is a broader shift in how clean energy and climate companies are communicating. The word "climate" is quietly disappearing from investor decks and press releases. Whether that's cynical pragmatism or genuine strategic repositioning depends on who you ask.

The concern is obvious. If companies spend long enough pretending the climate angle is secondary, it might actually become secondary. Institutional priorities have a way of drifting. But the counterargument is equally valid: a startup that survives by chasing critical minerals funding is still running the underlying technology, still developing the processes, and might actually be positioned to scale the climate-relevant parts of the business once the political winds shift.

Might. It's a lot of faith to place in a pivot.