Wind energy is recognised worldwide as cost-effective and environmentally friendly and is among the fastest-growing sources of electrical energy. This seminar will provide an overview of wind energy systems, discuss some of the challenges in the design and operation of wind turbines, and highlight how the performance of these systems has been improved in recent years. Continuing challenges and on-going and future research that can further facilitate the growth of wind energy as part of the world’s clean energy future, will also be discussed.