Organizations committed to sustainability and reducing their environmental footprint depend largely on the pro-environmental performance of their employees. This study investigates how environmentally specific transformational leadership (ESTL) shapes employee pro-environmental performance, as well as the mediating role of employee environmental awareness and the boundary condition of emotional exhaustion at work. Data were collected from 264 participants across three waves. The findings reveal that ESTL exerts a positive influence on employee environmental awareness, which in turn enhances pro-environmental performance. Additionally, the positive indirect effect of ESTL on pro-environmental performance through environmental awareness is moderated by emotional exhaustion, being stronger when the emotional exhaustion level is low. These findings highlight the critical role of leadership in fostering environmental sustainability within organizations and the importance of considering employee psychological well-being in the process. Our research contributes to the understanding of how specific leadership behaviors can drive pro-environmental actions in the workplace, offering practical implications for organizational leaders aiming to enhance environmental performance.