The multiplication of the virtual and actual worlds of the Metaverse provides possibilities and challenges never seen before at its higher levels. Since these emerged online environments become more realistic, the energy requirements tend to increase as well. This chapter addresses the idea of eco-friendly computing in the Metaverse and it tries to underline the fact that it’s necessary to consider technologies that would allow for the development of the Metaverse without harming the environment. There is a large number of resources created, calculated, and transacted in driven and constantly interacting environments throughout the course of a single interaction, popular applications of AR, VR, and MR are revolutionizing how consumers and developers coalesce. Moving forward, the energy efficiency aspect is becoming one of the determining business features for the AR, VR, and MR tool’s developers and its consumers. The chapter discusses green computing processes such as edge, optimization of the Metaverse construction and markets along with low-resolution devices that would help decrease the energy emission of metaverse models. According to the insights gleaned from the case studies presented in this chapter, and taking into account the outlined strategies and their detailed explanations, it seems possible to ensure the sustainability of the Metaverse in the long term. In order to counter the wear caused by this fast-evolving space, it would be wise to develop ways to reduce the amount of energy consumed by computing. In contrast to the customary means of boosting system efficiency, which invariably disregards fuel balance, the overarching emphasis should be on developing software algorithms that possess high energy efficiency.