PERT Primary energy renewable, total
The total energy resources required to produce a product or service are collectively referred to as the primary energy content (PE for short). The PE is specified in MJ and calculated from the lower calorific value of the energy resources deployed.
The "PER" section specifies the primary energy content of all renewable resources (biomass).
The "PERT" includes resources for energy-related as well as material uses.
Proof : LCA accordion
„Admission criteria for product-specific LCA data in the baubook“.