How much energy is stored in a vegetable?

The energy stored in a vegetable primarily comes from carbohydrates, fats, and proteins, measured in calories. On average, a medium-sized vegetable like a potato contains about 150 calories, while leafy greens have significantly fewer, around 20-30 calories per serving. The specific energy content varies widely among different vegetables based on their type and composition. Overall, vegetables are generally low in calories compared to other food groups, making them a vital part of a balanced diet.