The main component of a balanced diet that provides energy is carbohydrates. Carbohydrates are the body's primary energy source and are crucial for fueling everyday activities and exercise. They are broken down into glucose, which is utilized by cells for energy. In a balanced diet, carbohydrates should come from whole, unprocessed sources such as fruits, vegetables, whole grains, and legumes. This ensures that the body receives not only energy but also essential nutrients and fiber, contributing to overall health and well-being.