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 Carbohydrates are the main source of energy in the diet (55-75%) for most people. Most dietary carbohydrates come from plant origins and include sugars, oligosaccharides, starch and dietary fiber. Carbohydrates represent 56% to 73% of total per capita energy available in the EMR countries (Table 4).This is within the range of WHO (2003) recommendation. Sugars usually increase the acceptability and energy density of the diet and total sugar intake is often inversely related to total fat intake.arbohydrates represent 56% to 73% of total per capita energy available in the EMR countries (Table 4). This is within the range of WHO (2003) recommendation. Sugars usually increase the acceptability and energy density of the diet and total sugar intake is often inversely related to total fat intake.