Sustainability
3 min read
By Pedro Carreira
Updated 25 June 2026
Waste sent to landfill generates methane — a greenhouse gas 28x more potent than CO2.
Each tonne of general waste landfilled produces approximately 1.1-1.3 tonnes of CO2-equivalent emissions. Recycling 1 tonne of cardboard saves 1.4 tonnes CO2e; composting 1 tonne of food waste avoids 0.5 tonnes CO2e vs landfill.
For a business generating 5 tonnes/month of waste, improving diversion from 20% to 60% can reduce carbon emissions by 2-3 tonnes CO2e per month.
Key Numbers
- Methane warming potential vs CO₂ (100yr): 28×
- CO₂e per tonne of general waste landfilled: 1.1–1.3 tonnes
- CO₂e saved recycling 1 tonne of cardboard: 1.4 tonnes
- Monthly CO₂e cut, lifting diversion 20% → 60%: 2–3 tonnes
What You Need to Know
Landfill is the carbon-heaviest place your waste can end up. Organic material breaking down without oxygen releases methane, which traps roughly 28× the heat of CO₂ over a century — which is why diversion, not disposal, moves your footprint.
- General waste: ~1.1–1.3 tonnes CO₂e per tonne landfilled.
- Cardboard: recycling one tonne saves 1.4 tonnes CO₂e.
- Food waste: composting one tonne avoids 0.5 tonnes CO₂e versus landfill.
- Net effect: a 5 tonne/month generator moving diversion from 20% to 60% cuts 2–3 tonnes CO₂e every month.
Diverting these streams is exactly the resource-recovery shift driven by Recycling Victoria — A New Economy. As an independent broker, Bundle Waste audits your invoice for free, compares a network of providers to right-size your streams, and is paid only from the savings — so your emissions and your bill fall together.
Related Resources
Related Questions
How do I measure my business's waste diversion rate?+
Waste diversion rate = (total waste recycled or composted / total waste generated) x 100. To measure: track the weight or volume of each waste stream (general, recycling, organics, cardboard) over 3-6 months using provider reports or weighbridge tickets. Most Melbourne businesses start at 20-30% diversion and can reach 60-80% with proper stream separation. Bundle Waste provides monthly diversion reports for all clients.
What are scope 3 emissions from waste and why do they matter?+
Scope 3 emissions include all indirect emissions in your value chain — waste disposal falls under Scope 3 Category 5 (waste generated in operations). For most businesses, waste accounts for 2-8% of total scope 3 emissions. Under Australia's new climate reporting requirements, large businesses must disclose scope 3 emissions from 2027-28. Even if you are an SME, your corporate clients may ask for your waste data to calculate their own scope 3. Having audited data ready is a competitive advantage.
Can my business get carbon credits for recycling waste?+
Not directly through the Australian Carbon Credit Unit (ACCU) scheme for most SMEs — the Emissions Reduction Fund projects require scale (typically 10,000+ tonnes/year). However, you can: (1) purchase ACCUs to offset your waste emissions ($30-50/tonne CO2e), (2) use certified waste diversion data in your sustainability reporting, (3) leverage waste reduction in B-Corp or Climate Active certification. Some large waste processors offer 'carbon-neutral waste' services at a 10-20% premium.
What are Victoria's recycling targets for businesses?+
Victoria's Recycling Victoria policy targets: 80% waste diversion from landfill by 2030, 100% of organics recovered from all sources by 2030, and all packaging to be recyclable, compostable, or reusable by 2025. While these are government targets (not mandatory per-business), many large clients, councils, and procurement processes now require suppliers to demonstrate 50-70% diversion rates. Having audited waste data gives you a competitive advantage.
What is the circular economy and how does it apply to waste?+
The circular economy is a model where materials are kept in use as long as possible through reuse, repair, remanufacturing, and recycling — instead of the linear 'take-make-dispose' model. For businesses, this means: choosing suppliers with take-back schemes, selecting recyclable packaging, composting food waste, donating usable items, and buying recycled-content products. Circular practices can reduce waste costs by up to 40% and improve ESG reporting scores.
See exactly what you are overpaying
Bundle Waste reviews your current waste invoices and benchmarks them against a network of Melbourne providers — free, with a written report in 5 business days. You will see what you pay now, where the hidden charges are, and the rate we can negotiate. You only pay from the savings we find: no savings, no fee.
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Updated 25 June 2026
