As a result, the mills in the State, who draw about 80 to 85 per cent of the revenue from sugar sale, find it difficult to pay FRP to farmers. Rest of the revenue is drawn from co-generation and other sources. The increase in area under sugarcane, planting of new sugarcane varieties, which have higher sugar content, and advanced technology have resulted in higher sugar output in the State but the mills are incurring losses, he said.