International Journal of Computer Trends and Technology (IJCTT) – volume 11 number 4 – May 2014 ISSN: 2231-2803 http://www.ijcttjournal.org Page174 Energy Efficiency in Cloud Data Centers Using Load Balancing Ankita Sharma *, Upinder Pal Singh ** * Research Scholar, CGC, Landran, Chandigarh ** Assistant Professor, CGC, Landran, Chandigarh ABSTRACT Cloud computing is an expanding area in research and industry today, which involves virtualization, distributed computing, internet, and software and web services. This paper presents an approach for scheduling algorithms that can maintain the load balancing. In this research work we have developed power optimization algorithm which over comes the limitations of the previous algorithms[Round Robin, Equally Spread Current Execution Algorithm, Throttled Load Balancing which are used for the over load management of the data leading to positive consequences in terms of overall power consumption of the data centre thus helping in green computing. As due to undue overload of traffic and then overhead due to mitigation and migration of the virtual machines to balance out the operations there is always an impact on the power consumption, if there is more overload, there is bound to be more power consumption, and if balancing works well, there is bound to be an optimized trade-off for energy consumption. Results have shown that overall impact of power consumption is reduced by using the proposed algorithm. Keywords- Cloud computing, Green computing, Load balancing, Round robin, equally spread current execution, Throttled, Virtual machine. I. INTRODUCTION Cloud Computing : Cloud computing can be defined as “a type of parallel and distributed system consisting of a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers”.[4] Fig 1: Cloud Computing Green computing in clouds: Green Computing, or Green IT, is the practice of implementing policies and procedures that improve the efficiency of computing resources in such a way as to reduce the energy consumption and environmental impact of their utilization. As High Performance Computing (HPC) is becoming popular in commercial and consumer IT applications, it needs the ability to gain rapid and scalable access to high end computing capabilities. This computing infrastructure is provided by cloud computing by making use of datacenters. It helps the HPC users in an on-demand and payable access to their applications and data, anywhere from a cloud. [6]