Housemate angry that energy bills have gone up, is me drying laundry with a dehumidifier to blame?

My room in my rented house is currently stuffed with boxes because our landlord is moving us all out. I put my laundry on a drying rack with two dehumidifiers running in the living room to get it dry and out of the way as fast as possible and to avoid any chance of mould. usually i would use one, an