REG Bio-Residual Oil

A new sustainable solution for generating heat or power, or for use in other industrial applications.

As the nation’s largest producer of biodiesel, REG offers a consistent supply of high-performing bioresidual oil for use as a clean-burning alternative to traditional fuel oils.

High Performance to Meet Your Specifications

REG BioResidual Oil — a co-product of the biodiesel refining process — offers exceptional BTU performance when burned for heat or power generation. Whether used as a straight replacement for fuel oil, sprayed onto a traditional fuel source or blended with conventional heating oils, REG BioResidual Oil provides up to 128,000 BTUs per gallon while reducing emissions.

REG BioResidual Oil is an exceptional and renewable alternative to fuel oil, coal, natural gas and even other biomass fuel sources, providing many valuable benefits:

Better BTU performance

  • REG BioResidual Oil provides up to 128,000 BTUs per gallon.
  • Advanced production technology means REG BioResidual Oil contains minimal amounts of water or methanol.
  • REG BioResidual Oil offers a higher BTU value than coal or wood-fiber material, with approximately 100–125% more energy per pound than wood chips or pellets.

Cleaner burning

  • As a co-product of biodiesel production, REG BioResidual Oil has minimal carbon intensity.
  • REG BioResidual Oil burns cleanly and produces less particulate matter than other fuel sources. For example, ash content is reduced to 0.01-0.05% compared to 0.20% for No. 6 fuel oil.


  • REG BioResidual Oil is produced from recycled fats and oils such as used cooking oil, inedible corn oil, animal fat and other vegetable oils — renewable and plentiful resources. It is an affordable way to meet your company’s sustainability goals.
  • Fuel quality is guaranteed, regardless of feedstock.
  • In certain areas of the country, REG BioResidual Oil may qualify for Renewable Energy Certificates (RECs) and RINs, depending on the usage. 

Volume and Logistics to Meet Your Demands

REG BioResidual Oil is flexible and readily available. This high-viscosity product is liquid at room temperature. If your operation is equipped to burn a heavy fuel oil, it requires no infrastructure changes or special storage needs. If you burn solid fuel, take advantage of enhanced BTU performance by applying REG BioResidual Oil to your fuel source. 

Fuel TypeEnergy Content - Typical (BTU/lb)Ash Content - Typical        (% wt)Sulfur - Typical (% wt)
REG BioResidual Oil16,000 - 17,5000.01 - 0.05<0.02
No. 2 Fuel Oil19,200<0.010.0015 - 0.50
No. 4 Fuel Oil18,900<0.10<1.50
No. 6 Fuel Oil18,600<0.200.20 - 5.00
Bituminous Coal11,000 - 15,0005.00 - 20.000.70 - 4.00
Wood6,800 - 8,0000.20 - 1.00<0.20
Wood Pelets (Premium)8,200<1.00<0.20

More than 100 million pounds of annual production capacity

REG BioResidual Oil can be used in a wide variety of markets, including power generation, district heating and industrial applications.

Domestic and international transportation is available

Yellow Arrow

REG delivers insightful content like this to your inbox in our e-newsletters. Sign up today.