The role of Information, Communication and Technology (ICT) is important now-a-days and its impact on the nature is huge which emits more heat and CO2. Cloud Computing is playing an impressive role to face the challenges in IT Modern Digital Era to process the growing large volume of data and storing that data in Data Centers (DC) and provides the resources and applications to the customers with more scalability, flexibility, cost-effective, pay-on-demand basis and anything as-a-service in cloud but most of the prevailing cloud datacenter architectures are not aligned to green standards. To minimize the impact on cloud computing environment energy-efficient methods are required. Green Cloud is still under research and at nascent stage in its growth and implementation. Green cloud computing is an eco-friendly methodology helps to make the cloud computing environment with more power efficient, maximum resource utilization not by over-provisioning, less carbon footprints, minimized Green House Gas (GHG) emissions and reduction in E-wastages. In order to save cost, large enterprises come up with cutting edge technologies like Green Cloud Computing (GCC) by bringing them into the cloud environment to reduce the operational expenditures (OPEX) and allow the organizations to make less use of physical components and resources with virtualization techniques that requires only less cooling, less water consumption and minimized power consumption to keep the nature calm. The Cloud Service Providers (CSP) should upgrade their cloud DC infrastructure by eliminating the negative impacts which causes harm to the nature. Green Cloud Computing focuses on bringing the necessary characteristics and approaches in cloud environment like containerization, Designing Green Data center facility infrastructure, VM placement, Server Consolidation, Thin Clients, Green metrics, Green Network and Protocols, Green Data Management, Sustainable software development and safe disposable methods with 3 R's (Reuse, Reduce and Recycle). In this paper the discussions are about various elements and green cloud methodologies which are most needed to bring positive impact in our environment and to reduce metered bill for business profit margin and agility.