Frontiers Journal of Renewable energy

Biogas Power Plants

Abstract

Biogas power plants are a renewable power source, which is not intermittent, if deployed properly in concert with appropriately sized storage tanks. Therefore, biogas power plants have the ability to firm intermittent renewable power sources (wind farms, solar arrays) without the need for fossil fuel backup generation or large-scale battery storage solutions. These renewable power plants can convert organic waste into electricity, heat, and high-quality organic fertilizer.  This organic waste can be of a wide variety, such as food scraps, food preparation waste, discarded produce, cooking oil, grease, restaurant waste, and even animal excrements. Alternatively, the feedstock for biogas power plants can also be dedicated energy crops, most frequently maize/corn, but also other cereals, sweet sorghum, grasses, and any other energy crop with a high yield.  The efficiency of harvesting solar radiation energy through growing energy crops and converting them into energy for transportation is up to a factor of 3.8 higher than converting the same energy crops to transportation fuel via the bioethanol distillation process.

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