In terms of electrical consumption, is there any difference between rotary and convection ovens?
No, there is no difference at all. As an example, let’s compare equipments from Bongard, a leading French manufacturer: Power of the smallest rotary oven (450 pieces per hour): 34 kW. Power of the biggest convection oven (250 pieces per hour): 18.6 kW. Therefore, for the same quantity to be baked, electrical consumption will be the same.