Smart photovoltaic textiles are emerging as a promising solution for sustainable power of wearable electronics. These textiles, which integrate solar cells (SCs) with on-body electronics, are lightweight, flexible, and eco-friendly, leveraging natural sunlight. This review explores the working mechanisms, types, and advanced fabrication strategies of photovoltaic textiles, emphasizing their electrochemical performance and potential for wearable applications. It addresses current limitations in textile-based photovoltaics and offers insights for industrial commercialization. Wearable electronic textiles (e-textiles) are used in sportswear, military uniforms, and healthcare for monitoring vital health parameters. They are lightweight, flexible, and can integrate sensors, actuators, and energy harvesters. However, traditional power sources like batteries are incompatible with smart textiles due to their size, rigidity, and toxicity. Energy-harvesting textiles are a safer, more flexible alternative. Renewable energy harvesting includes technologies like nanogenerators, photovoltaic systems, and thermoelectric generators. These technologies are increasingly used to harvest ambient energy from human movements, vibrations, and thermal sources. Photovoltaic systems, in particular, are crucial for renewable energy due to their high energy density and abundance. Silicon-based SCs are the first generation, but they are not suitable for flexible electronics. Second-generation SCs, such as thin-film technologies, are more cost-effective and lightweight. Third-generation SCs, including dye-sensitized, perovskite, organic, and quantum dot solar cells, offer higher efficiency and flexibility. These technologies are critical for wearable applications, as they can be integrated into textiles and provide sustainable power. The structure and performance metrics of SCs are essential for evaluating their efficiency. Key metrics include power conversion efficiency (PCE), fill factor, maximum power, and open circuit voltage. Third-generation SCs, such as perovskite and organic solar cells, have shown significant improvements in efficiency and stability. However, challenges remain, including the use of toxic materials and the need for better durability. Textile-based SCs can be categorized into 1D fiber-shaped and 2D planar-shaped structures. Each type has unique advantages and challenges in terms of flexibility, transparency, and performance. The development of these SCs is crucial for the future of wearable electronics, as they offer a sustainable and efficient power source for smart textiles.Smart photovoltaic textiles are emerging as a promising solution for sustainable power of wearable electronics. These textiles, which integrate solar cells (SCs) with on-body electronics, are lightweight, flexible, and eco-friendly, leveraging natural sunlight. This review explores the working mechanisms, types, and advanced fabrication strategies of photovoltaic textiles, emphasizing their electrochemical performance and potential for wearable applications. It addresses current limitations in textile-based photovoltaics and offers insights for industrial commercialization. Wearable electronic textiles (e-textiles) are used in sportswear, military uniforms, and healthcare for monitoring vital health parameters. They are lightweight, flexible, and can integrate sensors, actuators, and energy harvesters. However, traditional power sources like batteries are incompatible with smart textiles due to their size, rigidity, and toxicity. Energy-harvesting textiles are a safer, more flexible alternative. Renewable energy harvesting includes technologies like nanogenerators, photovoltaic systems, and thermoelectric generators. These technologies are increasingly used to harvest ambient energy from human movements, vibrations, and thermal sources. Photovoltaic systems, in particular, are crucial for renewable energy due to their high energy density and abundance. Silicon-based SCs are the first generation, but they are not suitable for flexible electronics. Second-generation SCs, such as thin-film technologies, are more cost-effective and lightweight. Third-generation SCs, including dye-sensitized, perovskite, organic, and quantum dot solar cells, offer higher efficiency and flexibility. These technologies are critical for wearable applications, as they can be integrated into textiles and provide sustainable power. The structure and performance metrics of SCs are essential for evaluating their efficiency. Key metrics include power conversion efficiency (PCE), fill factor, maximum power, and open circuit voltage. Third-generation SCs, such as perovskite and organic solar cells, have shown significant improvements in efficiency and stability. However, challenges remain, including the use of toxic materials and the need for better durability. Textile-based SCs can be categorized into 1D fiber-shaped and 2D planar-shaped structures. Each type has unique advantages and challenges in terms of flexibility, transparency, and performance. The development of these SCs is crucial for the future of wearable electronics, as they offer a sustainable and efficient power source for smart textiles.