Calculate the energy released when 1000 hl of wort of density 1060 kg m-3 are fermented to 1000 kg m-3. What is the maximum rate of energy release if the maximum attenuation is 5 kg m-3 density units h-1. Note a solution of 1060 kg m-3 (60 kg greater than the density of water due to the dissolved sugars) is approximately equivalent to a 15% w/w sugar solution and 1m3 = 10 .