It must cow flatuance Remember The state of California is trying to regulate and tax the emissions form the cattle industry. Correct me if I am wrong but according to my fact and figures you are going to need at least 2000 to 2500 cows to produce enough fuel to run a unit per shift times 3 shifts. And again multiply times the number of units you are operating. I know I run some cattle and it looks like you really need to get into the cattle industry. It has its ups and downs but I still make some money on it.