Embodiments described provide a mobile containerized waste-to-energy recovery apparatus which enables a multi-stage gasification/oxidation of a solid waste and provide an energy source from a plurality of releasably couple technologies including at least a heat exchanger, a thermoelectric generator, an organic Rankine cycle unit, and chiller/heat pump. The apparatus includes an integrated slide rail mechanism that allows each of the plurality of iso containers to be releasably attached to one another and attach a variety of interchangeable and universally coded part types therein to enable a multi-stage gasification/oxidation in at least the primary and secondary chambers n and provide a recovered energy at the heat recovery module.