open-climate.aiFactors

Emission factor from UOS v7.0.1

Hot water - National average, five-year mean 2020 to 2024

Iceland · Well-to-use · Any year

Each m³ processed of heat or steam bought counts as 0.447 kg CO₂e. UOS gives one figure, for use in any year.

Value for any year

0.447kgCO₂e/m³ processed

Biogenic CO₂ and land use excluded · GWP100 · AR5

One value, for any year

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

Reference year 2024

Region
Iceland IS
Boundary
Well-to-use
Data quality
MediumRated by us, not by the source
Licence
Open · UOS terms

Where 0.447 comes from

Published as one number

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

Reporting this cubic metre under the GHG Protocol

Scope 2 + Scope 3, category 3 0.447

This one figure covers both together; no split between them is given.

You buy the energy, so its generation is your Scope 2.

The fuel behind it and the energy lost on the way to you are 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.

Heat and cooling › District heat and steam · Iceland · per m³ processed · Average

Well-to-use · Excl. biogenic CO₂ · AR5

Boundary
Well-to-use
Generation and network losses
GWP method
IPCC AR5, 100-year horizon
As printed by UOS
CO₂e basis
Excl. biogenic CO₂
Not split by gas; CO₂e only

Medium quality · Open licence · Any year

What this number covers

The path of 1 m³ processed of heat, from the fuel to your meter. Every step on it is counted.

  1. Heat generation

    Producing the heat and steam at the plants that feed the network

    Included, not split out

  2. Network losses

    Heat lost in the pipes between the plant and your meter, which still had to be produced

    Included, not split out

  3. Your record

    1 m³ processed in your records. The factor is per m³ processed.

    = 0.447

Outside this boundary

  • Building the heat plants
  • Building the heat network

Capital goods and infrastructure sit outside every well-to-use factor, in every library.

From UOS's record to a comparable factor

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

About this factor

From UOS

Losunarstuðlar vegna heits vatns eru breytilegir milli ára. Hér er um er að ræða fimm ára meðaltal fyrir allt landið. Losunarstuðla stakra ára má sjá í flipanum "Orkunotkun, skipting eftir árum". Stuðullinn miðast við skiptingu losunar frá háhitavirkjunum á milli raforku og heits vatns eftir orkuinnihaldi. Losunin háhitavirkjana er breytileg eftir svæðum en hér er gefið upp landsmeðaltal. Á sumum svæðum er unnt að nálgast upplýsingar um losun vegna heits vatns beint frá viðkomandi veitufyrirtækjum, t.d. hér hjá Veitum: www.veitur.is/umhverfismal. Losun frá lághitavatni er talin vera engin.

Source and licence

Publisher
Umhverfis- og orkustofnun
Library
UOS v7.0.1
Published
18 December 2025
Open the record at UOS
UOS's terms of use Open

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

Credit it with this lineUmhverfis- og orkustofnun (Icelandic Environment and Energy Agency), Losunarstuðlar, 7th edition (December 2025)
A plain reading of the licence, not legal advice. The licence text prevails.

Cite this factor

Umhverfis- og orkustofnun (Icelandic Environment and Energy Agency), Losunarstuðlar, 7th edition (December 2025). Normalised by open-climate.ai, https://open-climate.ai/factors/libraries/uos_iceland/ (CC BY 4.0). https://open-climate.ai/factors/ef-uosiceland-hot_water_5y_mean-is-m3_throughpu-well_to_use-f6b85ea5/?v=efv1-f723c22083c0bbaabadeab71f407127d

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