There are changes underway in the world energy and power systems because of climate change, which will result in smart and intelligent infrastructure for the new energy management and power system. Smart grid software will play an important part in making this new infrastructure intelligent. This chapter investigates software applications that have a potential to be developed for a new low carbon economy. In addition, this paper explains what the standard bodies and user groups driving the development of these new smart software applications. The chapter will also discuss the control points where software can be added to smart grid infrastructure for a low carbon economy.