The computational power is growing rapidly today hence the need for ‘Cloud computing’ concept is very vital. But, in Cloud computing high performance cloud servers are used for advance computational needs. A large amount of power is consumed to execute these computational units. At the same time, harmful gases are released in the environment. Green Computing is the concept which is trying to curb these ill effects by introducing new methods that would work efficiently while consuming less energy which is environment friendly. This paper focuses on Green computing techniques, in order to achieve low power consumptions in cloud environment.