natural gas & oil. Duke Energy operates a system of generating plants fueled by oil or natural gas, including combustion turbines, combined-cycle units and oil-fired units. Combustion turbines. Many of our combustion turbine units are used to supplement power supply during peak demand periods when electricity use is highest.
Carbohydrates are a type of macronutrient found in many foods and beverages. Most carbohydrates are naturally occurring in plant-based foods, such as grains. Food manufacturers also add carbohydrates to processed foods in the form of starch or added sugar.Common sources of naturally occurring carbohydrates include: 1  Fruits. 2  Vegetables.3  Milk. 4  Nuts. 5  Grains. 6  Seeds. 7  Legumes.ood manufacturers also add carbohydrates to processed foods in the form of starch or added sugar. Common sources of naturally occurring carbohydrates include: 1  Fruits. 2  Vegetables. 3  Milk. 4  Nuts. 5  Grains. 6  Seeds. 7  Legumes.
Carbohydrates are converted into glucose in your body and carried through your bloodstream to your tissues and organs for energy. Glucose is stored as glycogen in the liver and muscles for later use. There are three types of carbohydrates. Simple sugar is the most basic carbohydrate found in fruits, vegetables and dairy products. Starch is made up of more than one sugar unit bound together and is found in whole grains, vegetables and beans. Dietary fiber is the carbohydrate found in plants that passes through the intestines undigested.