Americans consume approximately 12.25 million metric tons of soybean oil each year, with total vegetable oil consumption reaching roughly 10 gallons per person. Yet only about one-quarter of used cooking oil (UCO) produced globally is collected for recycling.
The remaining billions of gallons often end up down drains, creating costly infrastructure problems, or in landfills. Whether you’re frying a Thanksgiving turkey or sautéing vegetables for dinner, understanding how to properly recycle cooking oil protects your plumbing, supports renewable energy production, and keeps harmful waste out of sewers.
Hotels and restaurants in the United States generate approximately 3 billion gallons of waste cooking oil per year. In 2022, the U.S. collected less than a third of that volume, only 850 million gallons. Despite being one of the most developed used cooking oil collection systems globally, substantial volumes if still go uncollected.
When cooking oil enters drains, it solidifies and combines with other waste to form massive blockages, known as “fatbergs”that clog sewers and wastewater sysems. According to the U.S. Environmental Protection Agency, fats, oils, and grease account for 47% of reported sewer system blockages. The EPA estimates that grease contributes to 10,350 to 36,000 sanitary sewer overflows that occur annually in the U.S.
How to Prepare Cooking Oil for Recycling
You may remember your grandmother keeping a grease can by the stove to collect bacon and other grease for reuse. Cooking oil collection follows the same basic principles, and need not be a big hassle with these simple steps.
- Designate a container. Metal coffee cans, plastic butter containers, or original oil bottles work well. Label it clearly so no one accidentally mistakes it for food. You don’t need to refrigerate the oil unless you plan to reuse it for cooking.
- Strain and store. Allow oil to cool completely before handling. Strain out large food particles through a fine mesh or cheesecloth. You can combine different types of cooking oil in the same container.
- Fill gradually. Add used oil each time you cook until your container is full. Most recycling programs prefer at least one gallon of oil for collection.
- Find a recycling location. Use the Earth911 Recycling Search to locate drop-off sites in your area. Many communities have expanded collection options beyond holiday seasons.
Where to Recycle Cooking Oil
Municipal Drop-Off Programs
Many municipalities now offer year-round cooking oil collection. For example, Hillsborough County, Florida’s CORE program maintains collection stations at libraries, parks, and utility facilities throughout the county. Similarly, St. Cloud, Minnesota launched a residential program in 2024 with four city drop-off locations. The East Bay Municipal Utility District in California accepts up to 15 gallons per person at multiple locations.
Curbside Collection
A growing number of communities accept cooking oil at the curb. Residents of Federal Way, Washington, can set out up to 3 gallons on recycling day for free pickup, but must stay within a 10-gallon annual limit. Contact your local waste management provider to check if curbside pickup is available in your area.
Household Hazardous Waste Facilities
Your local household hazardous waste facility often accepts cooking oil. Many communities also partner with fire departments for collection, particularly during the holiday season when deep-frying increases. California’s Used Oil Recycling Program provides grants to local governments to establish collection opportunities statewide.
Commercial Collection Services
Companies like Mahoney Environmental serve over 90,000 food establishments nationwide. While these services primarily target restaurants, some offer residential pickup or community collection events. Regional providers like Core Biofuels in New Mexico and Texas, and NW Biofuel in the Pacific Northwest, also collect used cooking oil for conversion to renewable fuels.
Why Recycling Cooking Oil Matters
Protecting Infrastructure
Fats, oils, and grease combine with wet wipes and other materials to form ‘fatbergs’ that block sewer lines, cause backups into homes and streets, and require expensive removal. These blockages can lead to raw sewage overflows that contaminate waterways and threaten public health.
Powering Renewable Fuels
Used cooking oil has become a critical feedstock for biodiesel, renewable diesel, and sustainable aviation fuel (SAF). According to the U.S. Energy Information Administration, SAF production capacity grew from 2,000 barrels per day to nearly 30,000 barrels per day in late 2024. The International Air Transport Association reports that SAF production reached 1 million tons globally in 2024, twice the previous year’s output.
Used cooking oil accounted for 81% of all SAF produced in the European Union in 2024. Pure biodiesel (B100) made from cooking oil can reduce carbon emissions by up to 74% compared to petroleum diesel. The conversion process yields approximately one gallon of biodiesel from 8.5 pounds of recycled cooking oil.
Other Uses for Recycled Cooking Oil
Beyond biofuels, recycled cooking oil is used as an animal feed additive, an industrial lubricant, and in soaps and cosmetics. The glycerin byproduct from biodiesel production is used in pharmaceuticals, personal care products, and paints.
Frequently Asked Questions
Can I recycle all types of cooking oil?
Yes. Vegetable oils, including canola oil, olive oil, and peanut oil, can be recycled together. Butter and animal fats, like bacon grease and lard, are also accepted at most collection sites.
Can I compost cooking oil?
Very small amounts of vegetable oil can be composted in a hot pile maintain temperatures between 120-150°F, which typically requires commercial composting. However, adding too much oil can slow decomposition, create odors, and attract pests. Oil-soaked paper towels used to wipe pans are generally fine to add to a hot pile. Never compost large quantities like the contents of a deep fryer—always take those to a recycling facility. Some curbside composting programs accept small amounts of vegetable shortening and rendered fats, but check with your provider first.
Can I reuse cooking oil?
Yes, cooking oil can be reused one to three times, depending on what you cooked. Strain out food particles, store in a sealed container, refrigerate, and check that the oil doesn’t look cloudy or smell off before reusing. Oil used to fry fish or heavily battered foods degrades faster than oil used for vegetables.
What if no recycling option exists in my area?
If recycling isn’t available, seal your cooled cooking oil in its container and dispose of it with regular trash. While not ideal, this prevents the infrastructure damage caused by pouring oil down drains. Never pour cooking oil down the sink, toilet, or storm drain.
Can I get paid for recycling cooking oil?
Commercial kitchens can often receive payment from licensed collectors. The value of used cooking oil has increased significantly due to demand for renewable fuels, with prices reaching above 50 cents per pound by late 2024. Residential quantities are typically too small to qualify for payment, but some community programs offer rebates or incentives.
Additional Reading
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Fatbergs: A Sewer Menace You Might Be Helping Create: Here’s why you should never pour oil or grease down the drain.
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Biofueling the Future: Learn about advances in fuels made from biological sources.
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What Fuels You? Choosing an Alternative Car Fuel: Compare the alternative car fuel options in this handy guide.
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Find Cooking Oil Recycling Near You: Use the Earth911 Recycling Search to locate drop-off sites in your area.