NOVELTY - An energy production system utilizes separated biological solids from an animal production facility as an energy source for biofuel production.    USE - For the production of biofuel. For the environmentally compatible production of food e.g. food and commercial product such as milk, cheese, ice cream, vegetable canning, vegetable freezing, fruit juice, wine, soft drinks, eggs, and meat or saw mills and paper and energy e.g. ethanol, butanol or biodiesel (all claimed).    ADVANTAGE - The system and the method generate food and energy products economically and treat resulting organic wastes in an environmentally sustainable and benign fashion and minimize the net amount of energy utilized while significantly lowering the amount of energy that is wasted. A facility or system utilizing the process creates a far more energy efficient, and substantially more profitable, business enterprise while meeting rigorous environmental standards. The system is capable of substantially boosting the efficiency and economics of food and energy production while greatly reduces the impact on the environment.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) an integrated food and energy production system (S1) comprising a biofuel production facility producing energy products from fermentable materials through a fermentation process; the animal production facility comprising animals from dairy cows, beef cattle, poultry, and pigs; an environmental management facility comprising a component to process waste from at least one of the animal production facility and the biofuel production facility; and an energy conversion facility. At least one of biological solids from the environmental management facility and biogas containing methane from the environmental management facility are converted into usable forms of heat energy. The heat energy is utilized in the biofuel facility;    (2) a method of producing transportable high energy content biological solids involving collecting organic waste at an animal production; separating the organic wastes to separate cellulosic, hemicellulosic, and lignin materials from other materials; drying the separated organic wastes to create dried organic solids greater than 20% solids; and converting the dried organic wastes into usable forms of heat energy.