Mr. Marco Rahner is Head of Technical Sales and Engineering in the Business Unit Digital Grid in Siemens Ltd based in Midrand, South Africa. He gained his professional experience in projects worldwide. He was a commissioning engineer and Project Manager for Substation Automation Projects. For six years Mr. Rahner was Technical Sales Consultant and Sales manager in headquarters responsible for the Cluster ASEAN and Pacific, as well for countries in the Middle East and South Africa. Mr. Rahner has experience with the whole product portfolio of Siemens Energy Automation. He is specialist for Substation Automation, Power quality and Distribution automation. He drives the topic for Microgrids within Siemens for Southern and Easterb Africa and he is specialized in the Microgrid controller functionality.