Free online calculators (ADEME, Carbo) give an order of magnitude in 15 minutes. This is useful for initial awareness, but it is not a Bilan Carbone® in methodological terms. Diag Décarbon'Action reduces the cost of a genuine assessment with support to €6,000 excl. VAT for an eligible company.
Read the source article: Bilan Carbone® cost in 2026: €10,000 to €30,000 excl. VAT