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In December 2020, Canada released its national strengthened climate change plan with focus on cutting energy waste, cutting pollution, and build clean industrial advantage. Two weeks later, the national hydrogen strategy was announced urging all involved stakeholders to delve into the deployment of large-scale clean energy technologies. Ontario, Canada's largest economy and leading manufacturing province, it releases its provincial hydrogen strategy and roadmap later this year. represents a viable solution for reducing CO2 emissions from large industry pollutants by integrating our innovative copper chlorine (Cu-Cl) thermochemical water splitting cycle with the energy intensive and polluting industry of cement manufacturing. The paper highlights the nexus between the production process of two valuable commodities, namely cement and Hydrogen, and the role their integration introduces for increased energy efficiency and reduction of greenhouse gas emissions. In addition, as most of the thermal energy demand in cement manufacturing is utilized during the kiln processes, the paper proposes several energy mix scenarios involving the use of hydrogen to partially meet the kiln's heat demand. The results from these scenarios show the possibility of achieving over 15% to 19.6% reduction in CO2 emissions compared to coal-based kiln production, along with reduced recurring cost for operating the kiln. On-site large-scale hydrogen production, mixed with natural gas, was found to be financially viable and environmentally advantageous alternative to power the kilns. [ABSTRACT FROM AUTHOR]