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Add external coupling for input and output conversion of liquid fuels - #4741

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Add external coupling for input and output conversion of liquid fuels#4741
robindesmit-quintel wants to merge 7 commits into
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add-liquid-fuels

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@robindesmit-quintel

@robindesmit-quintel robindesmit-quintel commented Jun 25, 2026

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Context

We want to introduce an external model to adjust the conversion ratios of the liquid fuels processes. The ETM should include an option to couple this external model to the original ETM.

Implemented changes

  • Add the liquid fuels extension as an external model to the coupling group so that it can be activated and deactivated. (coupling_group_wrapper)
  • Add the external coupling liquid fuels sliders. (external_coupling_efficiency_fuel_production_process)
  • Add names to the external coupling liquid fuels sliders. (en/nl_external_coupling)
  • Add names to headings above the sliders. (en/nl_etm)
  • Add all liquid fuels technologies as subheadings to "Liquid fuels and feedstock". (cost_fuel_production.yml)
  • Add name and description of subheadings. (en/nl_costs)
  • Adapt the costs sliders location and names to fit the new layout.

Related

Goes with pull requests #3452 (quintel/etsource#3452)

Checklist

  • I have tested these changes
  • I have updated documentation as needed
  • I have tagged the relevant people for review

@mabijkerk mabijkerk changed the title Add liquid fuels conversion ratios for active external coupling. Add external coupling for input and output conversion of liquid fuels Jun 25, 2026
@mabijkerk

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@robindesmit-quintel I would sort the sliders a bit more, so that the inputs are first and bundled together, then the outputs bundled together. Now they are all mixed:

image

@mabijkerk

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For the HVO and Fischer-Tropsch we specify the inputs and outputs together like this:
image

I would do the same for all the others, for example for bio-ethanol:
image

Especially since we might add more in the future.

This slider sets the input share of network gas in the production of bio ethanol.
<b>Warning</b>: the input and output shares can be set beyond realistic limits.
external_coupling_bio_ethanol_bio_ethanol_output_share:
title: Output - bio ethanol

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In English we write bio-ethanol in the frontend. Can you adjust this?

Deze schuif bepaalt het aandeel van verbruikte natte biomassa in de productie van bio-ethanol.
<b>Waarschuwing</b>: het is mogelijk om de input- en outputaandelen buiten realistische grenzen in te stellen.
external_coupling_bio_ethanol_network_gas_input_share:
title: Input - netwerk gas

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In the frontend, we write netwerkgas, can you adjust this?

Deze schuif bepaalt het aandeel van verbruikt waterstof in de productie van bio-ethanol-to-jet.
<b>Waarschuwing</b>: het is mogelijk om de input- en outputaandelen buiten realistische grenzen in te stellen.
external_coupling_bio_ethanol_to_jet_bio_kerosene_output_share:
title: Output - bio-kerosine

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In the frontend, we write biokerosine. Can you adjust this?

This slider sets the loss share in the production of methanol to jet.
<b>Warning</b>: the input and output shares can be set beyond realistic limits.
external_coupling_pyrolysis_biogenic_waste_bio_pyrolysis_oil_output_share:
title: Output - bio pyrolysis oil

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In the fronted, we use pyrolysis bio-oil. Can you adjust this?

Deze schuif bepaalt het aandeel van verbruikte pyrolyse-olie in de fractionering van pyrolyse-olie.
<b>Waarschuwing</b>: het is mogelijk om de input- en outputaandelen buiten realistische grenzen in te stellen.
external_coupling_fractionation_pyrolysis_oil_steam_hot_water_input_share:
title: Input - stoom/warmwater

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I would simply use "Warmte" here. Can you adjust this?

This slider sets the input share of hydrogen in the production of bio ethanol to jet.
<b>Warning</b>: the input and output shares can be set beyond realistic limits.
external_coupling_bio_ethanol_to_jet_bio_kerosene_output_share:
title: Output - bio kerosene

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I would use biokerosene.

title: Input - wet biomass
description: |
This slider sets the input share of wet biomass in the production of bio ethanol.
<b>Warning</b>: the input and output shares can be set beyond realistic limits.

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I'm not sure if this warning is clear enough. Let's discuss.

@mabijkerk

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These groups should be "Biomethanol synthesis":

image

The slides should be either 1) "(Bio)methanol synthesis" and "(Bio)methanol to jet", or 2) "Methanol synthesis" and "Methanol to jet", not mixed as they are now. Perhaps option 2 is simpler, because we otherwise have to update "Pyrolysis (bio-)oil" as well.

image

description: |
In this section, assumptions can ben made about the input shares and output shares of various processes for
the production of liquid fuels and feedstock. Go to the <a href="/scenario/supply/fuel_production/overview">Liquid fuels</a>
section to set the final supply of these processes.

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Final supply is not a term that is broadly used. You can have supply or final demand/consumption. In this case simply referring to 'supply' should be enough.

To enable this technology, set the final supply of bio-ethanol in the <a href="/scenario/supply/fuel_production/overview">Liquid fuels</a>
section.
external_coupling_bio_ethanol_to_jet:
title: Bio-ethanol to jet

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For all of these, to match the liquid fuels section, I would use bio-ethanol-to-jet, methanol-to-jet etc.

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