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v2026.1714 entries · CC-BY 4.0
Dictionary termTrack EStablev2026.2

Carbon-aware computing

The practice of scheduling, shifting, or routing computational workloads in response to real-time grid carbon intensity, so that flexible jobs run when and where electricity emissions are lowest.

ByCASRAI Editorial Board
· Last updated 21 May 2026

Examples

Worked examples

  • Is an instance

    A research workflow queues simulation jobs to run when forecast UK grid intensity drops below 200 g CO2e per kWh.

  • Is an instance

    A cluster job scheduler offers a low-carbon queue with priority drop in exchange for delayed start.

Counter-examples

Looks similar, but isn't

  • Not an instance

    Running interactive notebook sessions on a high-carbon grid is unavoidable and not in scope.

  • Not an instance

    Marketing 'green' compute without runtime carbon-intensity sensing is not carbon-aware.

Editorial commentary

Carbon-aware computing builds on the observation that grid carbon intensity varies by region and by hour, sometimes by more than 5x. Tools like the Carbon Aware SDK (Green Software Foundation) and Electricity Maps API expose real-time and forecast carbon intensity. Implementations include time-shifted batch jobs, region-shifted training (subject to data-sovereignty rules), and demand-response queues that pause when intensity spikes. The technique is most effective for non-urgent, interruptible workloads typical in research compute.

References

  • Green Software Foundation Carbon Aware SDK; Electricity Maps API documentation.

Also known as

Carbon-aware scheduling · Grid-aware computing

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
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Schema.org DefinedTerm (JSON-LD)
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