The purpose of this contract is for services covered by CPV Code 71314000-2 (energy and related services).

The objective of this contract is to carry out a feasibility study in the Liège basin with a view to launching a pilot project in mining geothermal. Thus, two steps are needed to know:

1. precise determination of the location and spatial dimensions of the site

2. the determination and characterization of the surface and subsurface components of the project.

The first step will provide a better understanding of the location and spatial dimensions of the pilot site, the type of use intended, the conditions for the implementation of the project, the technical and practical aspects, current surface uses and associated constraints (facilities for passing the heat network, manoeuvring area for drilling rig...). At the end of this stage, the contours of the project and associated site will be determined.

The second step will allow a detailed analysis of the characteristics of the surface and subsoil components of the selected pilot site and the design of the selected pilot site and to determine the various potential development opportunities for the selected pilot site.

Step 1: Pilot Project Selection and Preliminary Definition

This first step will provide a better understanding of the location and spatial dimensions of the pilot site, the type of use targeted, the conditions for the implementation of the project, the technical and practical aspects, current surface uses and associated constraints (facilities for passing the heat network, manoeuvring area). for drilling rig...). Contacts and discussions should be initiated with local actors (political authorities, former miners in the region, etc.) and project leaders in order to pre-select 3 projects corresponding to sites most favourable to the implementation of a pilot. The three proposed projects will then be prioritized.

At the end of this phase, the contours of the pilot project will be determined. The next step will focus on identifying and characterizing the different components of the pilot project in a more precise manner.

Step 2: Determination and Characterization of Underground and Surface Components of the Pilot Site

This step will allow a detailed analysis of the characteristics of the surface and subsoil components of the selected pilot site and to determine the various potential development opportunities for the pilot site.

The collection of subsoil data will clarify the local geology and assess the thermal resource associated with old mines present under or near the site, and to synthesize available detail mining data and information on overlying hydrogeological reservoirs and covers. possible.

The collection of surface data will define infrastructure and surface uses, detailed demand profiles, inventory of potential future consumers and identify their hot and cold production/consumption profiles and energy needs to be met through investment and consumption effective before investment. The search for and identification of other existing or potential low-energy renewable energy contributors near the pilot site should be preferred.

An initial identification of reference scenarii describing desirable system characteristic configurations should be highlighted taking into account: selection of the most interesting future consumers on or near the site; location and characteristics of wells; typology and geometry of the heat network latest generation; other renewable contributors and integration of underground and surface thermal storage. In the analysis, the strategy for renovation of buildings and therefore the future evolution of consumption must be taken into account as well as the assessment of primary energy and CO2 savings.

The different modelling, for each of the reference scenarios and individual components of the system, will define: the needs and behaviours of consumers; the demanded mining reservoirs (geometry, hydraulic and thermal characteristics); the wells, pumps and heat networks implemented (geometry, characteristics hydraulic and thermal regulation); the structure of the implementation costs; the structure of operating costs and the structure of distribution tariffs.

The concept of a structure in the form of an energy community and the integration of possible sources of fatal heat available near the pilot site will need to be analysed.

A pre-dimensioning of the system components is defined with the quantification of model parameters for each of the reference scenarios.

At the end of this phase, the outline definition of the pilot project and the different components of the system will be identified and modelled.

Deliverables

All deliverables must be validated by the steering committee. Documents are expected in writing and electronically for each mission requested:

• A methodological note containing the working assumptions;

• Harvested sources;

• All raw data used

• Interim files and reports containing the results of the mission and the raw data used.

• Computer files and calculation tools will be in spreadsheet format, such as Excel and shapefiles in the case of GIS mapping. The files are delivered in editable format with unprotected access to all cells

• Files and reports containing results and data (simulations and results).

• PV of the various meetings

• Interim and Final Reports

• In accordance with the Decree of 22 December 2010 on the Walloon Geographic Information Infrastructure, the cartographic layers produced must be available from the InfraSIG infrastructure and accessible in electronic format through the Geoportal of Wallonia (WalonMap, visualization and download services). These geographic data should be subject to ad-hoc documentation (metadata) according to the procedures established by the Department of Geomatics of the SPW in order to ensure compliance with obligations in particular with regard to metadata, formats and dissemination protocols (Cfr. SPW cartographic charter).

The Walloon Region is the exclusive owner of the rights related to data and results (content of reports, mapping and publications from which it will receive ad-hoc files on computer support compatible with SPW standards).

The successful tenderer undertakes to grant confidentiality to the information and data transmitted to him by companies and steering committees.

The provider may be authorised to exploit the results of the study upon simple request to the Administration and subject to the confidentiality of the data.