Dimethyl ether (DME) is a promising hydrogen-derived energy carrier that is similar with LPG in terms of characteristics and produces no soot. Its entire value chain is succinctly evaluated in this chapter. In terms of catalyst needs, energy efficiency, and greenhouse gas footprints, the production approaches of methanol dehydration, single-step synthesis from syngas, biomass gasification, and CO2 + green-hydrogen conversion are explained. Storage solutions that emphasize safety, cost, and volumetric-density trade-offs include pressurized liquid handling, chemical derivatization, and developing materials-based adsorption. The transport part examines the supply-chain economics, regulatory requirements, and retrofitting requirements of the current LPG-class infrastructure, which includes pipeline networks, rail/road cylinders, and oceangoing tankers. The potential of DME to replace diesel in heavy transportation, mix with LPG, and incorporate collected CO2 into circular, low-carbon fuel systems is framed by these analyses taken together.