 The study found that the cost of producing ethanol from tall fescue using different pretreatment methods varied significantly. The dilute acid method had the lowest cost at Binsha 83 per litre, while the steam explosion method had the highest cost at 0.05 per litre. Additionally, the amount of water used in the dilute acid method was the least at 5.96 kilograms per litre of ethanol produced, while the steam explosion method used the most water at 6.07 kilograms per litre of ethanol produced.