Focusing on the textile sector, this chapter presents the single case study of a medium-sized Italian textile and clothing company. This study highlights how environmental sustainability, proactively implemented by the company primarily through the adoption of renewable energy, can generate what we originally define as a “positive domino effect”. The company’s sustainability push, being absolutely crucial for counteracting the negative and harmful impacts of the textile industry, initially affects the environmental sustainability domain, which, in turn, creates a positive cascading effect on social and economic sustainability, thus holistically encompassing all sustainable marketing activities. The chapter reveals that the “positive domino effect” is achievable due to the textile company’s efforts in environmental sustainability and renewable energy, which have enabled it to strengthen its market reputation while concurrently gaining the trust of numerous involved stakeholders. The company serves as a case in point in this chapter, demonstrating its emergence as a major contributor to sustainability initiatives within the Italian textile landscape, alongside its significant contributions to the local community and the industrial textile district in which it is located. The study offers significant theoretical implications, relevant practical indications for managers and policymakers, and avenues for future research.