What happens to the oil left over after frying in restaurants, hotels and food factories? Not long ago, much of it was discarded down drains or sent to landfill, causing blockages and environmental damage. Today, used cooking oil has become a valuable commodity. It is collected, cleaned and converted into biodiesel, renewable diesel, sustainable aviation fuel and other products, turning a waste stream into a key resource for the low-carbon economy.

Used Cooking Oil Market Size and Forecast

According to Polaris Market Research, the global used cooking oil (UCO) market was valued at USD 8.56 billion in 2025 and is projected to reach USD 15.75 billion by 2034, growing at a CAGR of 7.1% from 2026 to 2034. Rising demand for renewable fuels, supportive regulations and the growth of the food service industry are driving this expansion.

How Used Cooking Oil Is Collected and Processed

The value chain begins with collection. Specialized companies collect used oil from restaurants, fast-food chains, hotels, catering services and food processing plants, often providing storage containers and scheduled pickups. The oil is then filtered to remove food particles and water before being sold to biofuel producers or other processors. Effective used cooking oil recycling programs help prevent sewer blockages, reduce pollution and create a reliable feedstock for renewable energy production.

Key Growth Drivers

Rising Use as a Biofuel Feedstock

Used cooking oil is one of the most sought-after feedstocks for biodiesel and renewable diesel. Because it is a waste product, fuels made from UCO typically have a much lower carbon footprint than fuels made from virgin vegetable oils. This makes UCO particularly attractive under policies that reward fuels based on their greenhouse gas savings. Demand is also rising from sustainable aviation fuel producers as the aviation industry seeks to decarbonize.

Environmental Concerns and Supportive Regulations

Governments are introducing policies to promote renewable energy, reduce emissions and encourage the circular use of waste materials. Europe in particular has strong regulations that support waste-based biofuels, creating high demand for UCO. At the same time, rules against improper disposal of cooking oil in many cities are encouraging food businesses to work with licensed collectors.

Expansion of the Food Industry

The global food service industry continues to grow, with more restaurants, quick-service chains and food delivery services. This increases the volume of cooking oil used and, in turn, the amount of waste oil available for collection and recycling.

Segment Insights

Polaris Market Research segments the used cooking oil market by source, application and region. By source, restaurants and other food outlets accounted for the largest share at 53.58% in 2025. These businesses use large volumes of frying oil and generate consistent quantities of waste oil, making them the backbone of collection networks. Households and food processing industries represent additional sources, although household collection remains less organized in many regions.

By application, biodiesel accounted for the largest share at 48.65% in 2025. Other applications include oleochemicals, animal feed and other industrial uses. In oleochemicals, UCO can be processed into fatty acids, glycerin and other ingredients for soaps, lubricants and industrial products.

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Regional Analysis

Europe led the global used cooking oil market with a 44.92% share in 2025. The region's strong renewable energy targets, incentives for waste-based biofuels and well-established collection infrastructure make it the largest consumer of UCO. Europe also imports significant volumes from other regions to meet demand. North America is another important market supported by renewable fuel programs, while Asia Pacific is a major source of collected oil and is expanding its own biofuel production capacity.

Challenges in the Market

As demand for used cooking oil has grown, so have concerns about traceability and fraud. Because UCO-based fuels receive favorable treatment under some policies, there is a risk of virgin oil being mislabeled as waste oil. Certification schemes, digital traceability systems and stricter auditing are being introduced to protect the integrity of supply chains. Collection logistics and price volatility are additional challenges.

Competitive Landscape

Key players covered in the Polaris Market Research report include Argent Energy, Baker Commodities Inc., Biomotive Fuel Ltd., Brocklesby Ltd, Darling Ingredients and Devon Biofuels. These companies operate across collection, processing and biofuel production, and many are expanding capacity and collection networks to secure more feedstock.

Some of the major players operating in the global market include:

• Argent Energy
• Baker Commodities Inc.
• Biomotive Fuel Ltd.
• Brocklesby Ltd
• Darling Ingredients
• Devon Biofuels
• Greenergy International Ltd.
• Lywood Consulting
• Proper Oils
• Uptown Biodiesel Limited

Future Outlook

Used cooking oil represents a powerful example of the circular economy in action. What was once a waste problem is now a valuable feedstock for renewable fuels and chemicals. With biofuel demand rising, aviation decarbonization gaining momentum and regulations supporting waste-based energy, the market is expected to nearly double to USD 15.75 billion by 2034. Companies that build reliable, transparent and efficient collection systems will be best positioned to benefit.

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