Blockchain is considered to be a foundational technology that will create a new decentralized Internet layer. Most of today's Blockchain development has been focused on Bitcoin and Cryptocurrency. However, the vertical markets, particularly the Energy sector, will benefit from the adoption of Blockchain as a potential disruptive technology that complements the insertion of Internet of Things (ioT) that improves grid device-system management, cybersecurity, and also enabling a new layer of energy trading. This webinar introduces a unique perspective of Blockchain applied to Smart Grid. It describes the basic principles of Blockchain, how it works, the key underlying technologies, the challenges and applications. It focuses on the enterprise energy segment, and the key elements and protocols. It will introduce the Blockchain Energy Reference Framework that is being created for the IEEE standards, addressing the Blockchain application, process, data and network layers. Finally, it will present some specific Smart Grid Blockchain use cases, including IoT Energy Trading and Transactive Energy.