We propose a new concept of adaptable load scheduling by introducing the so-called adaptable load that can
work as either a fixed load or a controllable load at different times of the day. Under the right conditions, rather than provide a fixed but unnecessary high electricity or energy to one fixed load while achieving a diminishing utility return, it is more worthwhile to share and schedule the same energy to more than one controllable
loads. We expect that the total utility achieved by the latter case is likely to be higher than the former case with the same total energy consumption. Motivated by this purpose, we formulate an optimization problem that include the fixed loads, controllable loads, and the proposed adaptable loads. We want to optimally determine when each of the adaptable load should be in a fixed load state or a controllable load state, and how much energy consumption level should be scheduled to each of them at each time. New optimal solutions are derived for the optimal load states and energy consumption levels for the adaptable loads that maximize the total utility. The same optimization problem can also be solved using standard mathematical packages. Simulation
results are presented to confirm that the proposed adaptable load scheduling scheme achieves a higher total utility than the energy scheduling scheme without adaptable load.