The two are complementary, rather than competing. A conventional Bilan Carbone® measures a company’s operational emissions across scopes 1, 2 and 3 (energy, travel, purchases, property and waste). For a bank or insurer, this source typically accounts for less than 1% of the total. PCAF specifically measures financed emissions, meaning a financial organisation’s scope 3 category 15, which accounts for more than 99% of the total footprint. A financial institution publishing its Bilan Carbone® must therefore do both: the conventional BC for its operations, PCAF for its loan and investment book.
Read the source article: An investment fund's GHG emissions: the PCAF method