Eight hundred thousand people flush their toilets in the Oslo region. Now, for the first time ever, the CO₂ from processing that sewage is being permanently stored 8,500 feet under the North Sea.

Inherit Carbon Solutions, HoopCO2, and the Northern Lights joint venture have achieved something the CDR world has been waiting for: the first permanent geological storage of biogenic CO₂ from biogas production. This isn’t a pilot. It’s not a feasibility study. It’s operational BECCS with verified permanent storage.

As Inherit CEO Kaja Voss put it: “For the first time, biogenic CO₂ from biogas production is being permanently stored underground.”

The infrastructure chain

Here’s how Oslo’s sewage becomes carbon removal:

  1. The Veas wastewater treatment plant in Slemmestad processes waste from 800,000+ people in the Oslo region
  2. Biogas production at the plant generates biogenic CO₂ as a byproduct
  3. Inherit Carbon Solutions and HoopCO2 capture and liquefy that CO₂
  4. The liquid CO₂ is transported to the Northern Lights terminal at Øygarden on Norway’s west coast
  5. From Øygarden, it’s piped to a geological storage formation 8,500 feet beneath the North Sea
  6. Credits are certified through Puro.earth

Every link in that chain is now operational. Northern Lights — a joint venture between Equinor, Shell, and TotalEnergies — has been running since 2025, but this is its first biogenic CO₂ from a wastewater source.

Why wastewater is the sleeper CDR pathway

Every city on Earth processes wastewater. Most of that processing generates biogas, which contains biogenic CO₂ — carbon that was recently in the atmosphere and got captured by plants, eaten by humans, and flushed down the drain. Normally that CO₂ gets vented back into the atmosphere.

Capture it and store it permanently, and you’ve got textbook BECCS: bioenergy with carbon capture and storage. The biomass cycle removes CO₂ from the air, and geological storage keeps it out permanently.

The elegance is that the CO₂ source is already concentrated at the wastewater plant. You don’t need to build a DAC facility to pull dilute CO₂ from ambient air. You just need to capture what’s already coming off an existing industrial process. That’s cheaper, simpler, and more energy-efficient.

Europe is building while the US debates

Northern Lights now has operational CO₂ transport and storage infrastructure that any European emitter or CDR project can plug into. It’s shared infrastructure — like a highway for carbon dioxide.

The US, meanwhile, is still fighting over pipeline permits and Class VI well approvals. The EPA has issued a handful of Class VI permits ever. Europe isn’t just ahead on policy — they’re ahead on pipes in the ground and wells that are actually injecting.

Norway turned its sewage into a carbon removal asset. That’s the kind of unsexy, infrastructure-heavy CDR that actually scales.

Sources

  • Inherit Carbon Solutions / HoopCO2 / Northern Lights JV announcement, March 2026
  • Northern Lights project operations documentation (operational since 2025)
  • Puro.earth credit certification
  • Veas wastewater treatment plant, Slemmestad, Norway

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