Looks like the biodiesel processing is getting more affordable. These guys have a system that will fit in your garage and make 40 gallons in 5 hours. Here's their site and a bit about the product. I'm no "greenie" but it is interesting.
http://www.extremebiodiesel.com/bio-diesel-products.aspx
1.) Extreme Green Machine **COMING SOON**
Introducing our new economical 40 gallon portable processor, the Extreme Green Machine! We are very proud to have received the "Best New Product Global Award" from the SEMA Show last year in Las Vegas. This little dynamo will process 40 gallons in approximately 5 hours! This system comes with a drywash filter, which means no waterwashing! It has a separate totally enclosed methoxide mixing chamber. This system also comes with an inline heater that will pre-heat the oil in about 90 minutes. This processor is fully mobile with its easy moving castors. The Extreme Green Machine comes with mold-in graphic volume levels on the tanks that will never wear off.
5-Hour system $1,995
http://www.extremebiodiesel.com/bio-diesel-products.aspx
1.) Extreme Green Machine **COMING SOON**
Introducing our new economical 40 gallon portable processor, the Extreme Green Machine! We are very proud to have received the "Best New Product Global Award" from the SEMA Show last year in Las Vegas. This little dynamo will process 40 gallons in approximately 5 hours! This system comes with a drywash filter, which means no waterwashing! It has a separate totally enclosed methoxide mixing chamber. This system also comes with an inline heater that will pre-heat the oil in about 90 minutes. This processor is fully mobile with its easy moving castors. The Extreme Green Machine comes with mold-in graphic volume levels on the tanks that will never wear off.
5-Hour system $1,995
IMO it would be too much hassle, constantly having to search for the fry or bacon grease. Then on top of that process it.