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Underground CO₂ storage reached a record 43.6 million tonnes in 2024

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Underground storage of carbon dioxide reached a new annual high in 2024, with 43.6 million metric tons sequestered in that year alone, according to the most comprehensive record of geological carbon dioxide storage published so far, as reported by Phys.org.

Record year and cumulative total

The newly published record puts the volume of carbon dioxide placed in geological storage in 2024 at 43.6 million metric tons, the highest figure for any single year in the dataset.

Over the past three decades, a cumulative 421.7 million metric tons have been stored underground, according to the same record.

What the report covers

The figures come from what is described as the most comprehensive record of geological carbon dioxide storage to date, and the report is the source for both the annual and the cumulative totals.

The story is reported by a single outlet, Phys.org, and the underlying data set is not described in the facts available here.

Open questions

  • Which projects and countries make up the record, and how were they counted?
  • How much of the stored volume is expected to remain underground over the long term?

Key facts

  • A new comprehensive record of geological carbon dioxide storage has been published.
  • 43.6 million metric tons of carbon dioxide were stored underground in 2024, a new annual record.
  • A total of 421.7 million metric tons has been stored underground over the past three decades.

Sources & evidence