open-climate.aiFactors

Emission factor from OCCC 2025

Nuclear - Extraction, transport and distribution to the generating plant

Spain · Upstream fuel · Any year

Each kilowatt-hour generated this way counts as 0.0251 kg CO₂e for the fuel supplied to the power plants. OCCC gives one figure, for use in any year.

Value for any year

0.0251kgCO₂e/kWh

Biogenic CO₂ and land use excluded · GWP100 · AR6

FossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventories

One value, for any year

OCCC sets no date window, so there is no year to pick.

Reference year 2025

Region
Spain ES
Boundary
Upstream fuel
Data quality
MediumRated by us, not by the source
Licence
Open · OCCC terms

Where 0.0251 comes from

Published as one number

OCCC prints this factor as a single figure, with no parts to add up and no split by gas.

Reporting this kilowatt-hour under the GHG Protocol

3.3 Energy upstream 0.0251

Extracting, refining and delivering the fuel behind it happens upstream: Scope 3, category 3.

CiteAPI

The factor, standardised

Every factor on open-climate.ai answers the same questions in the same words, whatever the publisher. Open any ⓘ for the definition.

Electricity › Electricity by generation technology · Spain · per kWh · Average

Upstream fuel · Excl. biogenic CO₂ · AR6

Boundary
Upstream fuel
Fuel supply
GWP method
IPCC AR6, 100-year horizon
Not on the record; set from OCCC's method notes
CO₂e basis
Excl. biogenic CO₂FossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventories
Not split by gas; CO₂e only
Life cycle
Upstream: coveredProduction: not coveredDownstream: not applicableEnd of life: not applicable

Medium quality · Open licence · Any year

What this number covers

The path of one kilowatt-hour, from the fuel to your meter. Not every step on it is counted; what is left out is listed below.

  1. Fuel supply

    Extracting, processing and transporting the fuel the plants burn

    Included0.0251

  2. Your meter

    1 kWh used. The factor is per kWh measured here.

    = 0.0251

Outside this boundary

  • Burning fuel at the plants
  • Building the power plants
  • Building the grid

OCCC counts running the plants, not building them.

From OCCC's record to a comparable factor

OCCC publishes this factor as one record. Here is each field as printed and what open-climate.ai made of it.

About this factor

OCCC gives no description for this factor.

Source and licence

Publisher
Oficina Catalana del Canvi Climàtic (Generalitat de Catalunya)
Library
OCCC 2025 (ed. 2026, v1 2026-06-09)
Published
9 June 2026
OCCC's terms of use Open

The values and their metadata are served in full and may be reused with credit to the publisher.

Es permet la reutilització de documents i dades d'acord amb la Llei 37/2007, sempre que no s'alteri el contingut ni les metadades, no se'n desnaturalitzi el sentit, es citi la font i s'indiqui la data de l'última actualització.
Credit it with this lineOficina Catalana del Canvi Climàtic, Generalitat de Catalunya. Guia pràctica per al càlcul d'emissions de gasos amb efecte d'hivernacle (GEH), any 2025, edició 2026.
A plain reading of the licence, not legal advice. The licence text prevails.

Cite this factor

Oficina Catalana del Canvi Climàtic, Generalitat de Catalunya. Guia pràctica per al càlcul d'emissions de gasos amb efecte d'hivernacle (GEH), any 2025, edició 2026. Normalised by open-climate.ai, https://open-climate.ai/factors/libraries/occc_catalonia/ (CC BY 4.0). https://open-climate.ai/factors/ef-occccatalonia-nuclear_extraccio-es-kwh-upstream_fuel-111f8d5c/?v=efv1-f0c5951f10b910883bc7c1083af95455

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