A home's HVAC (heating, ventilation and air conditioning ) system uses the most energy. In cold climates heating is the worst consumer and in warm climates it's cooling
or dryer
Its resistance.
Dryer
How much energy it uses
Thermal energy
Heating appliances are engineer designed to transfer the most energy. The manufacturer uses this design to produce the most effective heat transfer appliance to sell to their customers.
These are Relative Energy Efficiency (REE) ratings which indicate how much energy they consume to do their jobs as fridges or freezers, washing machines, dryers, etc. relative to other makes and models of the same kind of appliance. An appliance with an REE of A uses less energy than one with a rating of B; an appliance with an REE of B uses less energy than one with a rating of C; an appliance with an REE of C uses less energy than one with a rating of D, etc.
Yes, because if you have solar energy you can operate any appliance which uses electricity
the appliance, or tool, or whatever it is that uses the power.
Believe it or not, your refrigerator uses an incredible amount of energy. If the interior of your appliance is metal, chances are it draws more energy than one that is energy efficient designed.
a hair dryer
The brain uses the most energy in the body.