Roll-to-Roll (R2R) technology holds great promise for advancing perovskite solar cells from lab-scale to industrial applications. This technique offers high throughput, cost reduction, and compatibility with flexible substrates, making it ideal for scalable solar cell production. R2R coating enables continuous, efficient manufacturing, significantly lowering costs compared to traditional batch methods. It also promotes the use of low-cost, high-performance materials, reducing raw material costs. The process is scalable, energy-efficient, and environmentally friendly, contributing to a more sustainable production model. R2R coating is particularly suited for flexible substrates, enabling integration into diverse applications beyond traditional rigid panels, such as portable energy solutions and building-integrated photovoltaics. However, transitioning from spin coating to R2R coating in perovskite PV presents challenges, including precise control over coating parameters and managing environmental conditions during drying and annealing. Recent breakthroughs have enabled fully R2R coated perovskite solar cells and modules, using carbon for the top electrode, bypassing expensive metals. This advancement supports scalability and sustainability in continuous solar manufacturing. The work by Weerasinghe et al. demonstrated the first fully R2R perovskite modules, achieving high performance with optimized fabrication parameters. Despite these advancements, environmental concerns remain, particularly regarding toxic solvents used in the process. Future R2R technology must address these issues by integrating non-toxic solvents and exploring lead-free perovskite materials. Additionally, the development of sustainable substrates and recycling protocols is essential for the long-term viability of perovskite solar cells. The future of R2R perovskite devices lies in refining coating parameters, optimizing module design, and integrating quality control mechanisms. These innovations aim to maximize device performance and environmental sustainability. Collaborations between academia and industry, along with the establishment of global standards, are crucial for transitioning perovskite technology to commercial scale. By embracing these strategies, R2R coating can significantly transform the renewable energy landscape, facilitating progress towards a sustainable and energy-efficient future.Roll-to-Roll (R2R) technology holds great promise for advancing perovskite solar cells from lab-scale to industrial applications. This technique offers high throughput, cost reduction, and compatibility with flexible substrates, making it ideal for scalable solar cell production. R2R coating enables continuous, efficient manufacturing, significantly lowering costs compared to traditional batch methods. It also promotes the use of low-cost, high-performance materials, reducing raw material costs. The process is scalable, energy-efficient, and environmentally friendly, contributing to a more sustainable production model. R2R coating is particularly suited for flexible substrates, enabling integration into diverse applications beyond traditional rigid panels, such as portable energy solutions and building-integrated photovoltaics. However, transitioning from spin coating to R2R coating in perovskite PV presents challenges, including precise control over coating parameters and managing environmental conditions during drying and annealing. Recent breakthroughs have enabled fully R2R coated perovskite solar cells and modules, using carbon for the top electrode, bypassing expensive metals. This advancement supports scalability and sustainability in continuous solar manufacturing. The work by Weerasinghe et al. demonstrated the first fully R2R perovskite modules, achieving high performance with optimized fabrication parameters. Despite these advancements, environmental concerns remain, particularly regarding toxic solvents used in the process. Future R2R technology must address these issues by integrating non-toxic solvents and exploring lead-free perovskite materials. Additionally, the development of sustainable substrates and recycling protocols is essential for the long-term viability of perovskite solar cells. The future of R2R perovskite devices lies in refining coating parameters, optimizing module design, and integrating quality control mechanisms. These innovations aim to maximize device performance and environmental sustainability. Collaborations between academia and industry, along with the establishment of global standards, are crucial for transitioning perovskite technology to commercial scale. By embracing these strategies, R2R coating can significantly transform the renewable energy landscape, facilitating progress towards a sustainable and energy-efficient future.