No general rule allows or prohibits this: the official Diag Décarbon'Action information says nothing about it, and each regional funder sets its own conditions. Some regions refuse to co-fund a study already supported by Bpifrance, while others allow funding to be combined for subsequent modules, such as SBTi support or a roadmap, which must be checked case by case. Regional funding remains valuable for companies that are not eligible for the Diag. Before signing, ask the relevant funders to confirm in writing which funding can be combined.
Read the source article: Bilan Carbone®: what public funding can cover its cost?