Integrate DC (technical environment en building) footprint estimation

[PierreRustOrange]

Problem

When using the API to get the footprint for an server (or any other entity hosted in a datacenter, such as a VM) I currently get an estimation which inclues the footprint for the manufacturing of the server and the energy consumption (use stage).
However, this estimation does not include the footprint for the DC in which the server is hosted. This footprint includes

• the use stage footprint : energy consumption for the technical environment (cooling, UPS, etc.)
• the manufacturing of the building and technical environment (using appropriate amortization)

Solution

• for use stage, we could use the PUE to compute the amount of energy that is used for the server by the technical environment
• for the manufacturing, it is very difficult to get DC-specific data. However, we could use a generic Impact factor that would allocate impact based on the IT power of the equipment. Such generic impact factor can be calculated bas on data from the Ademe -Arcep report (2022) . A proposal for this calculation is available in Boavizta's wiki

The PUE could be passed as a parameter to the request, while we would always use the generaic value for the manufacturing stage.