FOG and Brown 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.

maritime industry fuel

Greasezilla®, a hydronic thermal FOG separation system, takes the grease trap waste produced by food service and food manufacturing facilities, and generates a Brown Grease Advanced Biofuel.

The ABF is 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.

Biodiesel Production

While vegetable oils, especially soybean oil, are the primary feedstocks for U.S. biodiesel production, the rapidly-growing demand for feedstocks worldwide is pushing up the cost for these feedstocks. Since feedstocks can represent up to 80 percent of operational expenses for biodiesel production, the use of FOG offers another option.

Instead of purchasing materials needed for feedstock, biodiesel plants can now generate their own. Greasezilla® adds additional profitability to biodiesel production facilities by producing a quality feedstock from materials that haulers will pay to unload.

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 industries.

“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.


  • Transform a waste stream into a useful product.

  • Does not require polymers, flocculants or other chemicals.

  • Reduces the amount of waste heading to landfills.

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


  • Low operational costs.

  • Runs on 5% of the ABF it produces.

  • Remote monitoring capabilities require minimal staffing.


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

  • Generate revenue by collecting disposal fees from regional haulers.
  • ROI less than 2 years.

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

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