markSX
Active Member
Unless he gets his ingredients for nothing and the 20 pence is the running costs per litre of his plant can't see how he does that. Cheaper no doubt but that seems a bit on the low side. Unless he has his electric plugged into a street lamp.
Meths = 45ppl
Oil = mostly free
NAoH = £18 for 25kg
On average I use 1200g of NAoH = £1.66,
30L of meths (I don't de-meth) = £13.50
so £15.16 for a 180L batch, of which I get around 160L of bio = 9.4ppl for chemicals.
allowing 10ppl for oil (remember I get most for free but pay up to 20ppl for the rest).
My setup is at a mates workshop, no rent, not charged for leccy, I put a fare bit of work his way.
20ppl of bio is probably a little higher than it actually is but I do have to take into account fuel used during collections and to and from the workshop.