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 sugars that break down inside the body to create glucose. Glucose is moved around the body in the blood and is the primary source of energy for the brain, muscles, and other essential cells.The healthy body attempts to regulate glucose levels by using a series of hormones â insulin and glucagon, which are produced by the pancreas gland.n Summary. Carbohydrates contain the glucose that the body needs for energy. There are two main types of carbohydrates, simple and complex. The more refined the carbohydrate the more quickly it is converted to glucose and released into the bloodstream.