They appear to have less potential capacity than our tank system, as their brochure talks of capacities in excess of 5000m3, (which suggests that this is somewhere near to their limit) whereas we regularly exceed this figure. (Worcester S.A. is 9200m3 gross, the Digestate tanks at Baldock (53 x 8) are 12800m3 gross, and we can go bigger than these figure if required