Fats, Oils and Grease are the biggest untapped opportunity in the renewable fuel market today.

Generating Biofuel from a Waste Stream

The environmental impact of reclaiming Brown Grease as an Advanced Biofuel makes the Greasezilla℠ FOG separation solution incredibly innovative. Currently, the majority of FOG collected in the United States is landfilled or incinerated as a waste product. Greasezilla℠ is changing this dynamic by processing FOG into a Brown Grease conversion-ready feedstock.

By recovering fuel resources from a nuisance waste, Greasezilla℠ transforms the negative value waste stream into a useful, salable product. Additionally, the Greasezilla℠ system reduces the landfilling of FOG-based organic solids and landfill-related methane emissions.

“For us, the integration of Greasezilla℠ into our biodiesel manufacturing process provides a quality feedstock from an otherwise difficult process. We see FOG and Brown Grease – and many in the industry agree – as the biggest untapped opportunity in the renewable fuel market today, and we’re excited about being part of it.”

– Jessica Sweeney, CF Technologies, Inc.

Biodiesel, Renewable Diesel and Sustainable Aviation Fuel Production

While vegetable oils, especially soybean oil, are the primary feedstocks for U.S. biodiesel and other biofuel production, the rapidly-growing demand for transportation biofuels worldwide is pushing up the cost for these feedstocks. Since feedstocks can represent up to 80 percent of operational expenses for biofuel production, the use of waste fats, oils and grease (FOG) offers another renewable yet more cost-effective option.

Previously untapped, Brown Grease Advanced Biofuel (ABF) is rapidly moving from an underutilized feedstock to an important and valuable biofuel resource. Greasezilla℠ adds additional profitability to production facilities by producing a low Carbon Intensity (CI) and lower cost quality feedstock from waste materials. In June 2022, the EPA included a pathway for Brown Grease ABF which extends RINs and low-carbon credits to Greasezilla’s℠ ABF feedstock for the creation of biodiesel, renewable diesel, sustainable aviation fuel and heating oil.

Expanded to a hub-and-spoke operation, with multiple systems placed strategically across a region, Greasezilla℠ can maximize the recovery of renewable energy resources for biodiesel production and other renewable fuels.


  • Transforms a waste stream into a useful product.

  • Does not require polymers, flocculants or other chemicals.

  • Reduces the amount of waste heading to landfills or incinerators.

  • Recovers a high-quality ABF and biodiesel feedstock for global consumption.


  • Low operational costs.

  • The process is fueled by a small fraction of the ABF it produces.

  • SCADA integration for remote monitoring capabilities.

  • Minimal staffing required.


  • Using a waste product as feedstock lowers the cost of inputs for biodiesel production.

  • Brown Grease is a low carbon intensity feedstock eligible for credits under the Renewable Fuel Standard.

  • Revenue is also generated by collecting disposal fees from regional haulers.

  • Average ROI is less than 2 years.

  • EBITA of 85% with low OpEx in relation to revenue.

Marine Biofuels

Greasezilla’s℠ ABF is also finding demand in the maritime industry, the industrial sector and with biodiesel producers. The Brown Grease ABF meets sulfur limits specified by the 2020 IMO regulations, and the less than one percent moisture content and low-cost inputs make Greasezilla’s℠ ABF the most desirable feedstock for the clean fuel sector and biodiesel conversion technologies.

maritime industry fuel

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