[PeteB570]

Biodiesel is only cheap because few people use, need or collect it right now.

Now, I think, a number of places would be happy for someone to come take it away for free.

It would not take many more users to drive up the "price". Then it would become "Use this item at this price or the other at a similar price." The free market is so wonderful.

[B Knotts]

Part of the price is the hassle of brewing it.

If you buy pure biodiesel at the pump, it's usually slightly more expensive than petroleum-based diesel fuel, despite the fact that biodiesel has slightly less energy per gallon.

It does, however, have excellent lubricity, which will become more important as ultra low sulfur diesel is rolled out. It seems to me that a 5% blend would be ideal for the time being.

[winodog]

You are correct. The waste company that currently hauls it away for a fee will soon start doing it for free, make the bio, and sell it for a profit.

[Hardastarboard]

Biodiesel is only cheap because few people use, need or collect it right now.

Bingo. The law of supply and demand is so simple and inescapable that you could teach a parrot to be an economist ("Aaawwwkk! Supply and demand. Supply and demand."). Unfortunately, the Green Weenies, and even some of our exalted FRiends are seemingly incapable of grasping that concept.