Recent sulfuric acidSulfuric acid manufacturing technologyTechnology developments have led to the designDesign of acid plantsAcid plant with significantly lower emissionsEmissions, enhanced energy recoveryEnergy recovery, and improved reliabilityReliability—all of which provide more sustainable solutions for the copperCopper industry as it supports the global energy transitionEnergy transition. This paper provides a fundamental review of sulfuric acidSulfuric acid manufacturing techniques along with a detailed technical comparison of acid plantsAcid plant designed to treat copper smelterCopper smelter off-gas and those designed to produce acid from sulfurSulfur at copperCopper leach facilities. Process and mechanical limitations inherent to each type of acid plantAcid plant designDesign are identified. New pathways and technologiesTechnology are described that overcome these limitations leading to acid plantsAcid plant that are safer to operate, more energy efficient, with lower capital and operating costsOperating Cost.