Abstract
Technology is not a reactive observer, but it is an active contributor in achieving the goals of Green Computing. Today IT sector covers several things for achieving green computing such as cloud computing, reduction of paper usage, hardware equipment recycling, green manufacturing, low power management, etc. Green computing includes the execution of energy efficiency central processing units (CPUs), hardware, software and servers. In the series of power saving arrangement, power saving software plays an important role to reduce power consumption and achieve better performance. Energy saving is part of green use which is one of the green computing components. The impulse behind this change comes from the ever increasing business computing demand, ever growing cost of energy, rising awareness of global warming issues. This paper presents some green initiatives under way in the IT industry and in brief covers the main research challenges which are still open in the race to meet green computing requirements. Green computing can facilitate us to secure place and healthy environment all over in the world.