How can private households contribute to a more resource-efficient food pro
duction system? The importance of meat consumption has previously been high
lighted. Various life-cycle analysis studies suggest which products are fav
ourable from an ecological point of view. This study uses a material flux a
nalysis to assess material and energy fluxes of the entire system of food p
roduction and consumption. It compares different steps in production and co
nsumption as well as different product categories. The results reveal that
agricultural production and private households account for most of the syst
em's energy requirements. The outcomes of two possible initiatives taken by
private households are analysed by scenario calculation. It compares optim
ization of technical devices in private households with purchase decisions
that favour organically produced food products. The results reveal an aston
ishing optimization potential of cooling devices in private households. How
ever, it also shows the importance of specific parameters, such as the ener
gy-mix coefficient.