About 40% of final energy consumption in Germany will take place in and around buildings. Heating, cooling, hot water and the operation of electric devices are doing the most important areas - in the future probably also increasingly electric vehicles. The Open Gateway Energy Management Alliance (OGEMA) is an open software platform for energy management in this area. This connects energy consumers and producers to the customer with control centers of energy supply and binds a display for user interaction to. Thus, end-users should be able to automatically observe the future variable price of electricity and energy consumption to times. All participating developers to turn their ideas for automated energy can be used more efficiently to implement in appropriate software.