No, Diag Décarbon'Action requires the Bilan Carbone® method and a provider listed by Bpifrance, certified in Bilan Carbone® or equivalent. The scheme funds 40% of a €10,000 excl. VAT package, leaving €6,000 excl. VAT payable by companies with fewer than 500 employees. Nothing prevents you from then requesting a GHG Protocol note: since Bilan Carbone® V9, mapping between the 11 activity categories and 15 categories has been direct and requires only a few hours of formatting. It is better to include this in the quote from the outset to obtain it in the same engagement.
Read the source article: GHG Protocol or Bilan Carbone®: which costs less?