At the top of every wind turbine tower sits the nacelle. The nacelle houses all of the key components that work together to convert wind energy into electrical energy. Though typically cylindrical in shape, the nacelle can vary in size depending on the size and capacity of the turbine. Inside this compartment is where the magic happens. https://dailynewsmotion.weebly.com/future-tech-forum/the-ever-evolving-design-of-wind-turbine-nacelle