Abstract: Described herein are devices, systems, and methods for the capturing, transferring, and managing of heat energy. Phase change materials are used for their high thermal inertia property and large energy per volume property when operated near their solid-liquid transition point. Additionally, the systems, devices, and methods utilize one or more thermoelectric modules thermally coupled to a first side of the phase change material and one or more thermoelectric modules thermally coupled to a second side of the phase change material, opposite the first side. The use of the thermoelectric modules allows heat energy to be stored in, transferred within, or harvested from, the phase change material the thermoelectric modules couple to.