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Answered from official grid carbon-intensity data across the US, EU, and UK.
Every value cited to a source. Never estimated.
A grid-average, location-based reference — maximum emissions at vendor-stated nameplate TDP for the grid a GPU runs on. A provider's contracted energy mix may differ. Each value carries its official source and data year.
Updated daily from the latest published bundle. Regions without an official carbon factor, and SKUs without a vendor-stated TDP, show an em dash — absence is a signal.
We publish grid-average carbon intensity for the region a GPU runs in — the location-based figure that emissions standards require. A provider buying renewable PPAs or certificates has a lower market-based footprint we cannot see or cite. This is the reproducible grid-average floor, not a provider's contractual claim.
Grid intensity swings hour to hour with the generation mix. The only citable public figure is the official annual average, published by national agencies. We publish that, with its data year — never a synthetic hourly estimate.
We publish the carbon intensity these agencies compute — we never recompute it ourselves from raw emissions and generation. Where an agency has not published a figure for a region, the value is an em dash, not a derivation of our own.
Carbon factors carry their data year: eGRID 2023, EEA through 2022, DESNZ reporting year. Older years are shown as published, gaps left visible. The same rule runs the entire platform: never make the system more helpful than the data allows.
State-level grid CO2-equivalent output emission rates from EPA's Emissions & Generation Resource Integrated Database (eGRID). U.S. government publications are in the public domain. Source: U.S. Environmental Protection Agency — data year shown on every value.
View eGRID source \u2197Per-country greenhouse-gas emission intensity of electricity generation, as computed and published by the European Environment Agency. Source: European Environment Agency — reused with acknowledgment; data year shown on every value.
View EEA source \u2197The official UK grid electricity carbon factor (kgCO2e/kWh) from the annual Greenhouse Gas Conversion Factors publication. Contains public sector information licensed under the Open Government Licence v3.0.
View Open Government Licence v3.0 \u2197These agencies publish the underlying carbon factors; they do not endorse or participate in this derived reference. The derivation — nameplate TDP × the official grid intensity — is produced by AIMC Technologies, LLC and labeled a location-based reference estimate.
Carbon tracking follows the same rule as every number here: officially published, cited to the source, and an em dash when the data does not exist.