Emission reductions achieved through the installation of household biodigesters have a high likelihood to be additional. Carbon credit revenues often remove key barriers that hinder market uptake. Applying the available quantification methodologies, however, likely leads to an overestimation of emission reductions. For projects that claim emission reductions from reducing the use of non-renewable biomass, overestimation risks are particularly high. This subgroup of projects also has material non-permanence risks that carbon crediting programs currently do not address. There are other cooking technologies with a lower emissions impact, but the project type facilitates progress on many Sustainable Development Goals.