The Repurpose Used Cooking Oil (RUCO) initiative by the Food Safety and Standards Authority of India (FSSAI) promotes converting used oil into biofuel.
Tiruchirappalli-based kB Energy Corporation collects used oil from over 2,000 units in seven districts and has stored nearly 30 tonnes ahead of Deepavali.
FSSAI norms allow 20 to 25 percent of used cooking oil to be repurposed, and Tamil Nadu has three biofuel plants among 64 in India.
Collected oil is filtered and stored in Tiruvanaikovil and supplied to authorised biofuel manufacturers.