It depends on the type of engineer, but, in general, I think that we all manage energy as a merchandise to be got fron Nature and that can be elaborated or transformed, transported, distributed, purchased and sold, to, finnally, be utilized and consumed. All whith a maximum of efficiency and at lower costs, contamination included.
For Electric Power Engineers, electric energy unit is the kilowatthour (kWh) equivalent to 3.6 MJ (megajouls) Julian