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 come from fruits, vegetables and grains, and are broken down into simpler sugars, fructose, galactose and glucose in your digestive tract. They are then absorbed in your small intestine and travel to your liver, where fructose and galactose are converted to glucose.f there is space for more glucose in your muscle cells, it's stored there in the form of glycogen, to be drawn on for future energy demands. But if your muscle stores are full, the excess glucose is converted to fat and stored as adipose tissue, or body fat.