Table 1 Potential product attributes
From: Towards marketing biomethane in France—French consumers’ perception of biomethane
| Attributes | Sources |
|---|---|
| Share of biomethane in the product | [29, 36, 82, 83] |
| Substrates used for producing the biogas (e.g., energy crops, waste) | [2, 29, 49,50,51,52] |
| Ecolabels | [29, 83, 85, 86, 98] |
| Location of production site (e.g., local, non-local) | [83, 84] |
| Supplier type (e.g., small supplier, big incumbent, cooperative) | [82,83,84] |
| Additional ecological benefits (e.g., donations for environmental projects in developing countries) | [2] |