Updated multi-energy scenarios published by Fluxys and Elia following public consultation

1. Updated scenario documents:
(These documents have been updated to reflect the feedback received during the public consultation.)

• A general document detailing the context, methodologies, proposed scenario assumptions and values.
• An Excel file containing detailed quantitative inputs and assumptions per sector for each scenario.
• A document describing methodological approaches and assumptions which will be used for the electricity national development plan.
• A report provided by Tractebel on key assumptions for nuclear in Belgium.

2. Consultation feedback:

• A file containing all non-confidential feedback received during the consultation.

3. Responses to feedback:

• A document containing all responses to the non-confidential feedback, including the feedback itself.

Public Consultation on the Scenarios and Data for the Evolution of Energy Consumption and Supply in Belgium for their 10-year Federal Investment Plans of the Electricity and Hydrogen Transmission Networks

Subject

Fluxys and Elia Transmission Belgium are organizing a public consultation from Friday, July 18, 2025, to Friday, September 12, 2025 at 6 PM, on the scenarios for the evolution of energy demand in Belgium, as well as the data and parameters used within these scenarios as part of the federal investment plans for the Electricity and Hydrogen networks.

Context

This public consultation is being conducted according to Article 10, §1 and Article 29, §1 of the Royal Decree of May 12, 2024, on the procedure for the development, approval, and publication of the hydrogen transmission network development plan and the electricity transmission network development plan.

Documents submitted to consultation

The documents submitted for consultation are:

• A general document detailing the context, methodologies, key assumptions, proposed scenarios assumptions and values but also general questions.
• An Excel file containing detailed quantitative inputs and assumptions per sector for each scenario.
• A document describing several key elements of the modelling approach to be used in the national development plan for electricity.

Additionally, you will find all presentations made during working group sessions with various stakeholders prior to this consultation, as well as the minutes of these sessions:

• Kick-off meeting (on 13/03/2025) (slides and minutes of meeting)
• Workshop 1 (on 17/04/2025) : Transport and Building sectorial demand (slides and minutes of meeting)
• Workshop 2 (on 03/06/2025): Industry demand (slides and minutes of meeting)
• Workshop 3 (on 08/07/2025): Supply & techno-economic assumptions (slides and minutes of meeting)

Please note, however, that some input values have been updated since those sessions. As such, these materials are provided for context only and do not constitute official consultation content.

The purpose of this consultation is to gather comments from current or future users of the electricity or hydrogen transmission networks, distribution network operators, the CREG, and relevant regional authorities, as well as other interested organisations (e.g. NGOs, academic institutions, research bodies, etc) regarding the developed scenarios.

Relevant provisions of the Royal Decree applicable to this consultation (translated from French/Dutch to English):

Article 10, §1: “The hydrogen transmission system operator shall consult, over a period of thirty days, current and potential future users of the hydrogen transmission network and hydrogen in general, based on the scenarios referred to in Article 9. The hydrogen transmission system operator shall specifically invite natural gas operators, interconnection operators referred to in Article 1, 60° bis, of the Gas Act, the network operator referred to in Chapter 3, the CREG, hydrogen distribution network operators, and the relevant regional authorities to participate in the consultation, in particular to verify the realism of the scenarios in accordance with Article 14, §2, second paragraph, of the Hydrogen Act.”

Article 29, §1: “The transmission system operator shall consult, over a period of thirty days, current and potential future users of the electricity network and electricity in general, based on the scenarios referred to in Article 28. The transmission system operator shall specifically invite natural gas operators, interconnection operators referred to in Article 1, 60° bis, of the Gas Act, the hydrogen transmission system operator referred to in Chapter 2, the CREG, distribution network operators, and the relevant regional authorities to participate in the consultation, in particular to verify the realism of the scenarios.”