Partly. [Other climate grants](/en/blog/climate-transition-funding-carbon-footprint-lca/) (ADEME Diag Éco-conception, regional grants, tax credits on decarbonisation investments) can fund complementary engagements or investments, but the same expenditure category cannot be subsidised 2 times: a regional grant for the same assessment cannot be added to the Diag. A complementary engagement (for example, Diag Décarbon'Action followed by a product LCA) can, however, receive funding, to be checked case by case with Bpifrance and the region.
Read the source article: Diag Décarbon'Action 2026: price, eligibility, process