BRSR Value Chain Scope 3: Guide for Indian Suppliers

When the Securities and Exchange Board of India (SEBI) introduced the Business Responsibility and Sustainability Report (BRSR), initial compliance focused solely on the corporate boundary of listed companies. However, over 70% of a typical manufacturer's total greenhouse gas footprint lies outside its gates: in the goods, raw materials, and logistics services procured from thousands of value chain partners across Scope 3 supplier networks.

Through Circular `SEBI/HO/CFD/CFD-SEC-2/P/CIR/2023/122` and subsequent amendments in Circular `SEBI/HO/CFD/CFD-PoD-1/P/CIR/2025/42`, SEBI established formal guidelines for Value Chain ESG Disclosures. While the regulatory timeline has granted flexibility, the commercial reality is clear: large corporations are actively pushing Scope 3 data collection requirements down to their Indian MSME suppliers.

The Regulatory Rules: The 2% Threshold and Scope

Under SEBI's updated framework, a listed company is not expected to chase every small vendor. The value chain boundary is governed by specific materiality rules:

• The 2% Materiality Filter: Under the March 2025 circular, a value chain partner is defined as any upstream supplier or downstream customer accounting for 2% or more of the listed entity's total purchases or sales by value.
• Target Cohort: Value chain disclosure applies to the top 250 listed entities by market capitalization.
• The Glide Path: Disclosure is voluntary from FY 2025-26, and third-party assessment or assurance is voluntary from FY 2026-27.

The MSME Crisis: Spreadsheet Questionnaire Fatigue

For a Tier-1 auto component supplier, forging unit, or chemical dye maker in hubs like Peenya, Ludhiana, or Coimbatore, compliance has turned into an administrative nightmare. Each enterprise buyer sends a custom 30-tab Excel workbook asking for:

1. Total factory electricity consumption for the past three financial years.
2. Water extraction volumes, borehole permits, and effluent discharge monitoring logs.
3. Scope 1 fuel consumption allocated arbitrarily across dozens of customer product lines.
4. Confidential commercial data: annual production throughput and machine utilization percentages.

Suppliers face a painful dilemma: either invest hundreds of engineering hours answering repetitive, unstandardized questionnaires, or hand over commercially sensitive pricing and capacity data to buyers who might use it to squeeze supplier margins.

The Solution: Standardized Product Carbon Footprints (PCFs)

The modern architectural solution to value chain disclosure is decoupling the supplier's corporate financials from the product's emissions data. Instead of sharing total company utility bills, suppliers calculate a verified Product Carbon Footprint (PCF) for each item shipped.

By adopting standardized data protocols such as the Partnership for Carbon Transparency (PACT) Pathfinder Framework v3.0, a supplier calculates the specific emissions per kilogram or unit of product. The supplier shares a cryptographically verifiable emissions figure (e.g., *1.84 kg CO2e per kg of machined flange*) without ever revealing how much they paid for electricity, what their profit margin is, or who their other customers are.

Action Plan for Indian Suppliers

1. Consolidate Metering: Install sub-meters on high-consumption manufacturing lines to isolate energy consumption per product line.
2. Standardize Factor Sources: Use CEA Baseline Database v20.0 for electricity and standard IPCC fuel factors, ensuring calculations align with what enterprise buyers' auditors expect.
3. Stop Answering Ad-Hoc Excels: Publish an audited annual Carbon Footprint Summary Sheet for major product SKUs, directing buyer questionnaires to a single verified source document.

How ZeroCarbon Enables Frictionless Supplier Sharing

ZeroCarbon helps Indian enterprises request and collect Scope 3 supplier data through standardized, secure portals. Suppliers upload their statutory bills once, our engine calculates their product carbon footprints deterministically, and suppliers can grant selective view access to multiple listed buyers, protecting commercial privacy while fulfilling BRSR Core assurance requirements under our PACT v3.0 PCF data exchange.