It depends strongly on location. Winter bees live on autumn fat. If the bees are well feed in fall and the winters are warm, will need much less honey to surviv

It depends strongly on location. Winter bees live on autumn fat. If the bees are well feed in fall and the winters are warm, will need much less honey to survive. The beehive will not be required to be warmed against chilling temperatures for example so bees don't need to spend so much energy warming it