Some time ago I was in Ireland to introduce friends of mine to Biogas. I also tried to reach out to Culan from the White Gypsy brewery, but he didn't have any time at that time. Since then the research has gone on and some articles were realeased that covered the usege of brewery spent grains (BSG). One of them seemed to be very promising as it came from the Bavarian State Brewery Weihenstephan. There system is called Enbaferm.