International Journal of Computer Applications
Cloud computing is very common today due to its various characteristics and benefits. It is cost efficient and thus very popular, but has great impact on environment such as increase in pollution, climatic changes and shortage of energy resources. Green cloud computing is important issue at present time. In this paper, the author have made critical observations of energy efficiency in all fields of cloud computing and briefly describe about various research that have been done for green cloud computing. The power and energy consumption of cloud services is also discussed.