A sustainable future relies upon sustainable future minerals.

This is what we do.

Geo40 has developed innovative world-leading technology for the recovery of strategic minerals from geothermal brines. A sustainable future relies upon sustainable sources of future minerals; recovering silica from geothermal fluid opens up new opportunities in the geothermal ecosystem.

We have built a pioneering team to tackle the climate-critical challenges that we face in the road ahead.

Our world-first, commercial Northern Plant processes 6,700 tonnes of geothermal fluid per day and will recover up to 5,000 tonnes per annum of colloidal silica from New Zealand geothermal brine.

The carbon footprint of our sustainably sourced colloidal silica is typically under 200kg of carbon dioxide equivalent per metric ton of 30wt% product, across Scope 1, 2 and 3 carbon dioxide emissions.

While we can readily displace existing colloidal silicas, we are particularly motivated by markets where our silica can displace environmentally unsustainable alternatives, such as polymers, which invariably end up in waterways.

Why Geo40?


Ohaaki Northern Plant, New Zealand

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