The document summarizes a seminar on zero energy buildings. It defines a zero energy building as one with zero net energy consumption annually, as the energy used is equal to that generated on-site by renewable sources. It describes how to achieve zero energy status through site selection, reducing energy loads via design, and employing renewable energy sources like solar panels and wind turbines. Examples of zero energy buildings in India are highlighted, including the largest rooftop solar installation on a multi-story building. A zero energy building is considered more sustainable than a general green building as it aims to fully offset energy usage and emissions.