Practical applications are circumstantial. Do you have a way of utilising or storing electricity/heat? If so, either are more efficient than not doing so. For

Practical applications are circumstantial. Do you have a way of utilising or storing electricity/heat? If so, either are more efficient than not doing so. For example, if it's cold where you live and the heating is usually running... just expelling the heat from your fridge into the house is efficient. If you are cooling, it's not. Electricity would be better... or at least piping the heat out.