 This combined efficiency makes miscanthus fields energy dense.Since miscanthus has an energy content of 18 GJ per dry tonne, the typical UK dry yield (winter harvest) of 11–14 tonnes per hectare produce 200–250 gigajoules of energy per hectare per year in that particular region.This compares favorably to maize (98 GJ), oil seed rape (25 GJ), and wheat/sugar beet (7–15 GJ),
underlining the differences between first and second generation bioenergy crops.