Screening and shredding for biomass

[Charleton Chips]

I was wondering how many screen wood chip or shredded chip for biomass. At the we screen all of our shredded green waste and all the chip we receive for mulch and the wilton power station. the shredder we have is a doppstadt ak530 and the screener is a power screen 1400.  we do about 75tonne per week for wilton of 10-50mm chip and 50-150 tonne per week of -10mm chip for penrith