We use HHV (Higher Calorific Value) rather than LHV (Lower Calorific Value), because HHV is used as a conversion coefficient in invoices to convert the volume of gas used into kWh: it is assumed that the gas boiler recovers the latent heat of condensation.
Empreinte Base documentation: HCV/COI ratio = 1.111
Footprint : Biomethane/Injected into networks/Average mix (in kWh NCV)
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