Lecture
This lecture covers the global issues related to energy, focusing on energy efficiency, renewable energy sources, and their impact on the environment. It discusses the disadvantages of current energy systems, the role of energy storage, and ways to reduce energy consumption. The lecture also explores different renewable energy sources such as wind, solar, and geothermal energy, along with the importance of thermal energy in buildings. Additionally, it delves into the efficiency policies and measures in various sectors like buildings, appliances, lighting, and transport, emphasizing the need for sustainable energy practices.