This paper explores the growing issue of greenwashing in the energy sector, especially in light of consumers’ increasing interest in sustainable practices. With the rise of environmental awareness, many energy companies are promoting their eco-friendly initiatives to appeal to a conscious consumer base. However, some of these claims are misleading, intentionally exaggerating or fabricating sustainability efforts. This deceptive marketing practice, known as greenwashing, undermines consumers' trust and hinders the genuine progress towards environmental sustainability. In today’s digital age, electronic word of mouth (eWOM) has become a powerful tool for consumers to share opinions, experiences, and knowledge. Social media platforms, online forums, and review websites enable users to voice concerns, expose misleading information, and educate others. This paper investigates how eWOM serves as a critical mechanism for identifying and raising awareness of greenwashing. Through the spread of both positive and negative consumer experiences, eWOM can help distinguish between genuine sustainability efforts and deceptive marketing tactics. The study incorporates a review of relevant literature, case studies, and an analysis of current trends in both the energy sector and online communication. By examining examples of greenwashing in the industry, the paper highlights the role of eWOM in uncovering deceptive claims and empowering consumers to make more informed decisions. Furthermore, it explores how eWOM can serve as an educational tool, helping to clarify the nuances of sustainability and its impact on both the environment and society. Ultimately, the paper emphasizes the significant potential of eWOM to influence public perceptions and hold companies accountable. It demonstrates how collective consumer action and informed discussions can counteract the effects of greenwashing and contribute to a more transparent and responsible energy sector. Through this research, it becomes clear that eWOM can be an essential force in fostering greater environmental responsibility and consumer empowerment.