Electric cooking in apartments-yes its cost for the electric service for the apartment building that uses electric ranges.The landlord has to usually go with 208V ranges-these are more expensive than gas ones-most apartment buildings I have dealt with use 208-120v three phase power.Ranges made for 220-240V may not work as well on 208V-cooking time is longer.The aparment houses I lived in all had gas cooking.Ovens too.I saw the service entrance transmformer for a building that had electric cooking in each apartment-was much larger than any other I had seen-and would be more expensive to run.Was in Wash DC area.Another apartment building I lived in was fed with 480V 3 ph-this ran the buildings HVAC equipment and chillers.A transformer in the basement stepped down the 480V to 208-120V for the apartments.And the building I work in-the main feed is 4160V-its is stepped down to 208-120V 3Ph for HVAC and other building equipment.Another is 4160 to 230V 3Ph for 3 of our transmitters-this runs pumps,blowers,fil supplies and LV supplies.In all transmitters the 4160 feeds the HV supplies transmformers.Yes,in most cases the gas is cheaper to run heating devices and cooking with-In NC area the electric is cheaper.Gas is expensive here.Propane is the next choice.In the Eastern NC area you see lots of electric cooking and HVAC.Heating at the transmitter site comes from transmitters and oil fired boilers.the fuel oil also is used in our 1.8Mw Cat diesal genset. Used for load management and emergency power.