This chapter explores a short summary of some of the key concepts of the standard that have the most significant impact on the substation design. Substations in a Smart Grid will move beyond basic protection and traditional automation schemes to bring complexity around distributed functional and communication architectures, more advanced local analytics, and data management. Advances in processing technology have been a major enabler of smarter substations with the cost-effective digitization of protection, monitoring, and control devices in the substation. Digitization of substation devices has also enabled the increase in control and automation functionality and, with it, the proliferation of real-time operational and nonoperational data available in the substation. The challenge of operations and maintenance in advanced substations with smart devices is usually one of acceptance by personnel. The challenge of commissioning a next generation substation is that traditional test procedures cannot adequately test the virtual circuitry.