Scope 3 Emissions From Waste: The Carbon Disclosure Most Indian Companies Are Hiding

Updated: September 05, 2026 · 16 min read

Fewer than 12% of BRSR-filing companies in India disclosed a quantified Scope 3 Category 5 figure in their FY 2023-24 annual reports — a finding consistent with SEBI’s own observations flagged to listed entities in early 2025. With SEBI’s BRSR Core circular dated 12 July 2023 now pulling the top 150 listed companies into mandatory, assured Scope 3 reporting from FY 2024-25, the cost of that omission is shifting from reputational to regulatory. The question is not whether scope 3 emissions waste data will be scrutinised — it is whether your organisation has the underlying records to survive that scrutiny.

The Disclosure Gap That SEBI Is About to Make Expensive

SEBI’s circular dated 12 July 2023 introduced the BRSR Core as a subset of the Business Responsibility and Sustainability Report, applicable initially to the top 150 listed entities by market capitalisation for FY 2023-24 and extending to the top 250 from FY 2024-25. Unlike the broader BRSR — which allows narrative responses — BRSR Core demands quantitative, third-party assured Key Performance Indicators (KPIs). Scope 3 greenhouse gas emissions appear explicitly in Principle 6 of the BRSR Core KPI set, and Category 5 (Waste Generated in Operations) is a named sub-category, not an optional disclosure.

The consequence of under-reporting is not merely a lower ESG rating. SEBI has the power to issue show-cause notices and levy penalties under the Securities and Exchange Board of India Act, 1992 for material misrepresentation in mandatory disclosures. More immediately, institutional investors — particularly sovereign wealth funds operating ESG mandates — have begun flagging Scope 3 incompleteness as a basis for engagement letters and, in several documented 2024 cases across the Nifty 100, for abstentions on remuneration resolutions. In short, the financial channel is activating faster than the regulatory one.

A parallel pressure point comes from the Ministry of Environment, Forest and Climate Change (MoEFCC), which is consulting on a domestic Carbon Credit Trading Scheme (CCTS) notification. If waste-related abatement activities enter the CCTS baseline methodology — as current drafts suggest — companies with no verified waste emission baseline will be structurally disadvantaged when claiming credits. Getting Category 5 right now is not gold-plating; it is baseline hygiene.

What the GHG Protocol Actually Requires for Scope 3 Waste Emissions

The NITI Aayog‘s India GHG Programme adopts the GHG Protocol Corporate Value Chain (Scope 3) Standard as the reference methodology, and that standard is unambiguous: Category 5 covers emissions from the third-party disposal and treatment of solid and liquid waste generated in a company’s own operations. The calculation boundary begins at the point waste leaves your facility gate and ends at final treatment — landfill, incineration, composting, anaerobic digestion, or recycling.

The Four Calculation Methods — and Why Indian Companies Choose the Wrong One

The GHG Protocol offers four methods for Category 5: the waste-type-specific method, the average-data method, the disposal-method-specific method, and the site-specific method. The waste-type-specific method — which uses published emission factors per tonne of waste type — is the most granular and most defensible. The average-data method, which applies a single blended factor across all waste, is the easiest to calculate and the one overwhelmingly used in Indian disclosures. The problem: average-data can understate emissions from hazardous or organic waste streams by 60-70% relative to waste-type-specific calculations, because it averages in near-zero-emission recyclable metal streams against high-emission organic and chemical streams.

Correctly, the disposal-method-specific approach requires you to know not just how many tonnes of waste you generated, but which treatment route each tonne took — landfill with no gas capture, controlled landfill with partial gas capture, municipal incineration, specialised hazardous waste incineration, or recycling (which the GHG Protocol treats as near-zero for Category 5, with the avoided emissions credited in Category 11 or 12 for the downstream processor). This is precisely why authorised recycler documentation is not a compliance nicety — it is the data input that lets you apply the correct, lower emission factor to your recycled waste streams rather than blending everything into an inflated average.

Why Indian Companies Systematically Under-Report Category 5

Three structural problems explain the disclosure gap. First, waste data ownership is fragmented. In a typical Indian manufacturing organisation, the Environment, Health & Safety (EHS) team tracks hazardous waste under the Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016, the facility management team handles general solid waste, and the procurement or IT department manages e-waste under the E-Waste (Management) Rules, 2022. The sustainability team preparing the BRSR often sees none of these data streams in a consolidated form until Q3 of the reporting year — by which point the underlying records are incomplete.

Second, the regulatory architecture for waste in India organises disclosure by waste type rather than by emission pathway. The Hazardous and Other Wastes Rules require Form 3 and Form 4 manifest records for hazardous waste movement, and Rule 5(1)(d) mandates that generators maintain records of waste sent to authorised recyclers. But those records are designed for regulatory traceability, not for carbon accounting. Converting a Form 4 manifest into a tonne-CO₂e figure requires an additional step — applying an emission factor — that most EHS teams have never been asked to perform.

Third, the E-Waste (Management) Rules, 2022 impose Extended Producer Responsibility (EPR) targets on producers, importers and brand owners, but the EPR accounting is volume-based (units or kilograms collected), not emissions-based. A company that dutifully files its EPR returns on the CPCB E-Waste portal has the data it needs for Category 5 — but typically does not realise it. The linkage between EPR compliance records and Scope 3 disclosure has not been institutionalised in most Indian sustainability teams, and this disconnect is a primary driver of the under-reporting problem.

How BRSR Core and CDP Scoring Connect to Your Waste Data Quality

BRSR Core’s Principle 6 KPIs require a company to disclose total Scope 3 emissions in metric tonnes of CO₂ equivalent, broken down by category where material. SEBI has not published a materiality threshold for Category 5, which in practice means that a company cannot simply declare it immaterial without a written materiality assessment — a document most BRSR filers do not prepare. Assurance providers (KPMG, EY, Deloitte, PWC and their equivalents conducting limited or reasonable assurance under ISAE 3000 or ICAI’s equivalent standards) are now routinely questioning Category 5 omissions during the FY 2024-25 assurance cycle.

CDP’s climate questionnaire — which feeds into the annual A-to-D score that global procurement teams use as a supplier filter — docks points explicitly for incomplete Scope 3 reporting. Under the CDP 2024 scoring methodology, a company that discloses fewer than eight of the fifteen Scope 3 categories without a documented relevance assessment cannot score above a B. For companies in the Nifty 50 or those supplying to European multinationals subject to the Corporate Sustainability Reporting Directive (CSRD), a B rating is no longer adequate — procurement teams are starting to require A or A-minus. Category 5, being operationally generated and therefore directly within a company’s data-collection reach, is one of the categories CDP flags most readily for under-disclosure.

Authorised Recyclers: Why Their Paperwork Is Your Cleanest Carbon Input

The GHG Protocol’s hierarchy of data quality places site-specific, primary data at the top and industry-average estimates at the bottom. For Category 5, site-specific primary data means: actual tonnage of each waste type transferred to a named, authorised disposal or recycling facility, with a verified record of the treatment method applied. An authorised recycler — one holding a valid CPCB or State Pollution Control Board (SPCB) authorisation under the Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016 — issues precisely these records in the form of weight-bridge certificates, Form 4 manifests, and certificates of recycling or destruction.

For non-hazardous scrap — ferrous metals, copper, aluminium, plastics — the equivalent documents are the GST-compliant tax invoice (which carries material description, HSN code, and weight) and the recycler’s own processing acknowledgement. At The National Recycling Corporation, every consignment processed through our pan-India waste dealer operations generates a GST invoice and a destruction or recycling certificate that your sustainability team can attach directly to the Category 5 working file. This is not a marketing claim — it is what your Big Four assurance provider will ask for in Q1 of the next reporting cycle.

Contrast this with the alternative: using a spend-based or average-data estimate derived from your facilities management budget. A typical Indian manufacturing plant spending ₹18-₹24 lakh per year on waste collection contracts will produce a Category 5 estimate with an uncertainty band of ±40% to ±60% under spend-based calculation, because waste collection rates vary significantly across Maharashtra, Gujarat, Tamil Nadu and other states, and because the treatment route is entirely unknown. That uncertainty band will appear in your assurance report — and it will trigger questions from SEBI-appointed reviewers and CDP assessors alike.

Emission Factors, Disposal Routes and the Numbers That Matter

Selecting the right emission factor is where Category 5 calculations most often go wrong. The table below summarises representative emission factors by disposal route, drawn from IPCC Tier 1 defaults and the India GHG Programme’s sector guidance, alongside the common Indian waste types that flow through each route.

Disposal / Treatment Route	Indicative Emission Factor (kg CO₂e / tonne waste)	Common Indian Waste Streams	Primary Data Source for Indian Filers
Unmanaged / open landfill (no gas capture)	500 – 600	Mixed municipal solid waste, food waste, packaging	Municipality transfer records (often unavailable — use estimate)
Controlled landfill (partial methane capture)	200 – 350	Industrial solid waste, inert waste	SPCB-authorised landfill receipts
Incineration (without energy recovery)	1,000 – 1,500	Hazardous waste, biomedical waste, contaminated PPE	Form 4 manifest + incinerator run logs
Incineration (with energy recovery / co-processing)	100 – 300	High-calorific industrial waste, certain plastics	Co-processing facility certificate + fuel-substitution data
Composting / anaerobic digestion	10 – 60	Organic food waste, canteen waste, expired food	Compost facility weigh slips
Recycling — metals (ferrous & non-ferrous)	~0 (processing emissions credited to recycler, not generator)	MS scrap, copper, aluminium, stainless steel	GST invoice + recycler’s destruction / recycling certificate
Recycling — e-waste (CPCB-authorised dismantler)	~0 for generator (avoided emissions in downstream scope)	IT assets, PCBs, batteries, CRT monitors	CPCB E-Waste portal certificate + weight-bridge record

The practical implication of this table is significant: a company that sends 200 tonnes of MS scrap to an authorised metal recycler records approximately zero Category 5 emission for that stream — but only if it has the GST invoice and recycling certificate to prove the treatment route. Without those documents, an auditor applying the average-data method may assign a blended factor of 300-400 kg CO₂e per tonne, inflating the company’s reported waste carbon footprint by 60 to 80 tonnes of CO₂e for that single waste stream alone. Across a large manufacturer with multiple scrap streams, the aggregate distortion easily crosses 500 tonnes CO₂e — material by any standard.

It is equally worth noting that the Battery Waste Management Rules, 2022 — which impose EPR obligations on battery producers and importers — require recyclers to issue certificates of collection and recycling. These certificates, when routed back to the corporate sustainability team, serve double duty: EPR compliance evidence and Scope 3 primary data. Very few Indian companies have yet joined these two functions, but the regulatory architecture already supports it.

The 7-Step Compliance Checklist for Category 5 Disclosure This Quarter

Based on common assurance findings and BRSR Core requirements, the following actions represent the minimum standard a sustainability or carbon accounting team should execute before closing their Category 5 disclosure for FY 2024-25.

1. Map every waste stream by type and quantity. Pull records from EHS, facility management, IT asset disposal and procurement for the full financial year. Reconcile against Form 4 manifests filed under the Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016 and e-waste transfer records on the CPCB portal.
2. Identify the treatment route for each waste stream. Do not assume — collect disposal receipts, landfill gate passes, municipality acknowledgements and recycler certificates. If a route cannot be confirmed, flag it as estimated and document the reason.
3. Obtain original weight-bridge certificates and destruction or recycling certificates from every authorised recycler used during the year. For metal scrap — ferrous and non-ferrous — this means the GST invoice plus any additional certificate issued. For e-waste, the CPCB-registered dismantler’s certificate is mandatory.
4. Apply waste-type-specific emission factors (not the average-data method) wherever you have confirmed treatment-route data. Use IPCC Tier 1 defaults or India GHG Programme sector factors as your reference, and document the factor source in your calculation file.
5. Conduct a materiality assessment for Category 5 if you intend to exclude it from your disclosure. This assessment must be written, retained for at least two years (consistent with CPCB record-retention norms), and available for review by your assurance provider.
6. Review your EPR compliance records for data reuse. EPR returns filed for plastic waste under the Plastic Waste Management Rules, 2016 (as amended) and for e-waste under the E-Waste (Management) Rules, 2022 already contain tonnage figures that feed directly into Category 5. Cross-reference rather than re-collect.
7. Engage your assurance provider ahead of year-end — not after. Category 5 is one of the areas where limited assurance providers are now requesting third-party confirmation from recyclers directly. If your recycler cannot issue a confirmatory letter or certificate, that waste stream will likely be qualified in the assurance report.

Frequently Asked Questions

Which Indian companies must disclose Scope 3 emissions under BRSR Core?

SEBI’s circular dated 12 July 2023 introduced BRSR Core as a mandatory, assured disclosure for the top 150 listed entities by market capitalisation from FY 2023-24, expanding to the top 250 from FY 2024-25. Scope 3 emissions — including Category 5 (Waste Generated in Operations) — are explicit KPIs within BRSR Core’s Principle 6. Companies outside this threshold may still face Scope 3 questions through CDP participation, customer ESG audits or lender sustainability-linked loan covenants.

What is GHG Protocol Category 5 and how is it different from Scope 1 and 2 emissions?

GHG Protocol Scope 3 Category 5 covers emissions from the treatment and disposal of solid and liquid waste generated in a company’s own operations, where the actual treatment occurs at a third-party facility. Unlike Scope 1 (direct emissions from owned assets) and Scope 2 (purchased electricity), Category 5 emissions are indirect and occur outside the company’s operational boundary. The GHG Protocol Corporate Value Chain Standard, adopted by the India GHG Programme as the reference methodology, requires companies to account for this category separately using waste-type-specific or disposal-method-specific emission factors.

Can a company exclude Category 5 from its BRSR Core disclosure if it considers it immaterial?

Yes, but not without documentation. SEBI’s BRSR Core framework does not prescribe a numerical materiality threshold for individual Scope 3 categories. However, excluding a category requires a written materiality assessment explaining why the category is not relevant to the company’s activities. Assurance providers conducting reviews under ISAE 3000 or equivalent standards are now routinely requesting these assessments. An exclusion without a documented assessment is treated as a disclosure gap, not a legitimate omission.

What records do I need from a recycler to support a Category 5 disclosure?

At minimum: a weight-bridge certificate or GST-compliant invoice showing the quantity and type of waste transferred, and a certificate of recycling or destruction identifying the treatment method applied. For hazardous waste, the Form 4 manifest under the Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016 is also required. For e-waste, the CPCB-registered dismantler must issue a certificate referencing the E-Waste (Management) Rules, 2022. These documents should be retained for at least two financial years, consistent with standard regulatory record-keeping practice.

How does poor Category 5 data affect a company’s CDP score?

CDP’s scoring methodology (2024 version) awards points for completeness and quality of Scope 3 disclosure. A company that discloses fewer than eight of the fifteen Scope 3 categories without a documented relevance assessment cannot achieve a score above B. Category 5 is flagged specifically because it is operationally generated and directly accessible to the reporting company — meaning there is no reasonable basis for a primary data gap. An incomplete or entirely estimated Category 5 response typically results in a one-band score reduction, with downstream consequences for supplier qualification in European and US procurement programmes.

Work With The National Recycling Corporation

The National Recycling Corporation operates pan-India waste dealer and recycling services from its Mumbai headquarters, with active collection and processing across Maharashtra, Gujarat, Delhi-NCR, Karnataka, Tamil Nadu and Telangana. Our operations are structured specifically to serve the documentation requirements of BRSR-filing entities, CDP respondents and companies subject to ESG lender covenants — not simply to move material.

Every engagement with us produces a GST-compliant tax invoice, a weight-verified recycling or destruction certificate, and — for applicable waste streams — documentation referencing the relevant regulatory authorisation under the Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016 or the E-Waste (Management) Rules, 2022. For metal scrap, our pricing is indexed to LME benchmarks for copper and aluminium, and to prevailing Mumbai market rates for ferrous scrap (MS scrap rates in Q1 2026 ranged ₹32–₹38/kg across Mumbai yards), ensuring you receive fair-market value alongside the compliance record. Our CPCB-authorised e-waste recycling service and our ferrous and non-ferrous metals recycling operations generate the precise primary data records your carbon accounting team needs to replace Category 5 estimates with actuals.

If your sustainability team is preparing for BRSR Core assurance, responding to a CDP questionnaire, or simply trying to move from spend-based estimates to primary data in your waste carbon footprint, we can help — and we can do so in a single scheduled pickup with same-week documentation turnaround. Contact us to discuss your waste streams and documentation requirements.

• Pan-India scheduled pickups — same week for volumes above 500 kg
• GST-compliant invoicing with correct HSN codes for all scrap categories
• Certificates of recycling and destruction, formatted for BRSR Core assurance review
• CPCB-authorised disposal partners for hazardous and e-waste streams
• Fair-market pricing indexed to LME for copper, aluminium and other non-ferrous metals
• Two-year record retention and reissuance of certificates on request

Related Articles

• ESG Audit Failures in 2025: The Top 5 Recycling-Related Findings That Wrecked Ratings
• ISO 14001 vs R2 vs NAID AAA: Which Recycler Certification Should You Actually Demand?
• Budget 2026 and Recycling: Tax Incentives, Customs Tweaks and What It Means for Indian Recyclers

Sources and References

• CPCB — Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016: Regulatory Text and Forms
• CPCB — E-Waste (Management) Rules, 2022: EPR Registration and Compliance Portal
• Ministry of Environment, Forest and Climate Change (MoEFCC) — Carbon Credit Trading Scheme and Climate Policy
• SEBI — BRSR Core Circular dated 12 July 2023: Business Responsibility and Sustainability Reporting by Listed Entities
• NITI Aayog — India GHG Programme and Circular Economy Policy Framework
• CPCB — Extended Producer Responsibility Portal for Plastic Waste (Plastic Waste Management Rules, 2016)
• London Metal Exchange (LME) — Copper, Aluminium and Non-Ferrous Metal Benchmarks
• GHG Protocol — Technical Guidance for Calculating Scope 3 Emissions (Category 5: Waste Generated in Operations)