BRSR Core Value Chain Guidance: Complete Supplier Compliance Manual

The Securities and Exchange Board of India (SEBI) has established mandatory value chain disclosures under the Business Responsibility & Sustainability Reporting (BRSR) Core framework. For comprehensive corporate rules, refer to our SEBI BRSR Compliance Guide. Top 1000 listed entities are required to disclose verified ESG performance indicators covering their upstream and downstream value chain partners accounting for at least 75% of total procurement.

Supplier Risk Warning

Major listed companies in steel, automotive, pharmaceuticals, and FMCG are actively phasing out non-compliant vendors who fail to provide auditable primary ESG data. Complying with BRSR Core parameters is now a prerequisite for vendor qualification.

1. The 9 BRSR Core Key Performance Indicators (KPIs)

SEBI requires reasonable assurance across nine specific environmental and social performance metrics:

BRSR Core Attribute	Metric & Unit	Vendor Data Required	Auditing Standard
Greenhouse Gas Emissions	tCO₂e per ₹ Lakh Turnover	Scope 1 (Direct Fuel) & Scope 2 (Grid Electricity)	GHG Protocol Corporate Standard / ISO 14064-1
Energy Consumption	GJ per ₹ Lakh Turnover	Total electricity, renewable energy %, and fuel consumption	Utility bills & fuel logbook assertions
Water Intensity	Kiloliters per ₹ Lakh Turnover	Freshwater withdrawal, rainwater harvesting %, & ZLD status	Water flow meter logs
Waste Generation & Circularity	Metric Tonnes per ₹ Lakh Turnover	Hazardous/non-hazardous waste fractions & recycling %	State Pollution Control Board (SPCB) manifests
Employee Health & Safety	Percentage & LTIFR	Lost Time Injury Frequency Rate & safety training coverage	OSHA / ISO 45001 incident registers

2. Step-by-Step Value Chain Data Compilation Methodology

To build a robust audit trail that passes enterprise client inspection, suppliers should execute the following 4-stage data pipeline:

Stage 1 - Boundary & Attribution Setup: Allocate plant-level emissions to specific client product lines using weight (kg), volume, or revenue allocation formulas.
Stage 2 - Primary Data Harvesting: Extract monthly kilowatt-hour (kWh) data from DISCOM utility bills, diesel generator (DG) logbooks, and fuel invoices.
Stage 3 - Emission Factor Standardization: Apply official CEA (Central Electricity Authority) grid emission factors (currently 0.716 kg CO₂e/kWh) and IPCC default fuel factors.
Stage 4 - Pre-Audit Verification: Store raw source documents in a secure digital data room for third-party reasonable assurance sampling.

3. Commercial Benefits of Early BRSR Core Adoption

Suppliers that voluntarily implement BRSR Core data pipelines gain significant competitive advantages in enterprise RFPs:

Preferred Vendor Status: Listed buyers prioritize ESG-ready suppliers to minimize their own Scope 3 data collection overhead.
Access to Sustainable Supply Chain Finance: Major Indian banks offer discounted working capital loans (50-100 bps interest rate cuts) to vendors with verified sustainability credentials.
Global Export Readiness: BRSR Core metrics map directly into international standards like EU CSRD and GRI.

Frequently Asked Questions (FAQ)

Are MSMEs directly mandated by SEBI to file BRSR reports?

No. MSMEs are not mandated to file reports directly to SEBI. However, if an MSME supplies goods or services to top 1000 listed entities, the listed buyer will require ESG disclosures from the MSME to satisfy their mandatory value chain disclosures.

What is the difference between Limited Assurance and Reasonable Assurance in BRSR Core?

Limited assurance involves high-level desk reviews and analytical inquiry, while Reasonable assurance requires rigorous testing of primary records, site visits, and physical verification of utility meters.

Which emission factor should be used for Indian electricity grid consumption?

Suppliers must use the official Central Electricity Authority (CEA) Carbon Baseline Database for the Indian Power Sector, which publishes annual updated weighted average grid emission factors.