Fuel is the fourth answer, not the first
A circular economy keeps materials in use for as long as possible. The order of preference is to reduce waste, reuse products, recycle materials, and only then recover energy from what is left. Landfill comes last.
Waste to fuel is for material that cannot be recycled at reasonable quality, such as mixed plastic films, contaminated packaging, worn-out tyres and food waste. A project that pulls good recyclables out of the recycling stream is a step backwards.
Four routes from waste to fuel
- Refuse derived fuel: shredding and drying high-calorific, non-recyclable waste.
- Pyrolysis: heating sorted plastic or tyres without oxygen to produce oil, gas and char.
- Compressed biogas: anaerobic digestion of organic waste into a natural-gas grade fuel.
- Used cooking oil to biodiesel: processing collected oil into a diesel blend.
What the rules now ask of industry
- Solid Waste Management Rules, 2026: source segregation, audits, RDF use and tighter landfill limits.
- Extended Producer Responsibility: registered recyclers and CPCB portal evidence for recovery targets.
- Pollution control consents: processing plants need consent to establish and operate from the State Pollution Control Board.
Sound project or weak one?
A few questions separate a sound project from a weak one:
- Is the feedstock truly non-recyclable, or is good material being diverted?
- Are the energy and mass balance measured, not assumed?
- Are stack emissions and residues controlled, tested and permitted?
- Is the fuel tested for quality, and is there a buyer who will use it?
- Does the carbon accounting count the fossil carbon that is burned?
Where Net Zero Sustainable Solutions comes in
- Life cycle assessment comparing the route with landfill, recycling and replaced fossil fuel.
- GHG inventory and carbon footprint covering fossil and biogenic carbon, process energy and residues.
- Waste and circularity reporting for BRSR and customer requirements.
- Carbon market screening for projects under India's offset mechanism.
Important: Status as of 20 September 2026, based on published summaries of the Solid Waste Management Rules 2026 and the EPR framework. Rules and targets change often, so confirm with CPCB and MoEFCC before acting.