Corporate Carbon in India: Why Scope 3 Is the Blind Spot That Could Cost You

Published: March 10, 2026 | Reading time: 12 minutes

India’s corporate carbon accounting landscape has a significant problem, and it is not the one most compliance teams think about. While Scope 1 and Scope 2 emissions reporting has become increasingly routine for the top listed companies — driven by SEBI’s BRSR mandate and CDP disclosures — Scope 3 emissions remain a vast, largely unmeasured territory for the overwhelming majority of Indian businesses.

This matters because Scope 3 is not a marginal addition to a company’s carbon footprint. For most Indian companies, it represents 70 to 90 percent of their total greenhouse gas emissions. Ignoring it is not a reporting gap — it is a strategic blind spot that exposes companies to regulatory risk, supply chain disruption, and loss of competitiveness in decarbonising global markets.

This article presents the data on where Indian companies stand on Scope 3, explains why the gap exists, and outlines a practical path forward.

How Do Scope 1, 2, and 3 Emissions Work in the Indian Context?

The GHG Protocol classifies corporate emissions into three scopes. Understanding what each means operationally — particularly in the Indian context with its specific energy mix and supply chain structures — is essential before addressing the Scope 3 challenge.

Scope 1: Direct emissions from owned or controlled sources. For Indian companies, this includes combustion of fossil fuels in boilers, furnaces, and vehicles; process emissions from cement kilns or steel furnaces; and fugitive emissions from refrigerants and gas leaks. Most large Indian companies measure Scope 1 with reasonable accuracy, though methodology gaps persist in fugitive emission calculations.

Scope 2: Indirect emissions from purchased energy. In India, this is dominated by electricity consumption. The Central Electricity Authority (CEA) publishes annual grid emission factors — the most recent being 0.716 tCO2/MWh for FY 2023-24. India’s grid remains among the most carbon-intensive in the world due to its 55% coal dependence, making Scope 2 a larger proportion of total emissions for Indian companies compared to European peers operating on cleaner grids.

Scope 3: All other indirect emissions across the value chain. The GHG Protocol defines 15 categories spanning upstream activities (purchased goods, capital goods, fuel and energy-related activities, transportation, waste, business travel, employee commuting, leased assets) and downstream activities (transportation, processing, use of sold products, end-of-life treatment, leased assets, franchises, investments). This is where the blind spot lies.

Why Does Scope 3 Represent 70-90% of Most Companies’ Carbon Footprint?

The scale of Scope 3 relative to Scope 1 and 2 is counterintuitive for many executives accustomed to thinking about their company’s environmental impact in terms of factory emissions and electricity bills. But the data is consistent across sectors and geographies: the value chain dwarfs direct operations.

Consider a typical Indian automobile manufacturer. Its Scope 1 emissions come from painting, welding, and assembly operations. Scope 2 comes from electricity consumed in its plants. But the steel, aluminium, plastics, rubber, glass, and electronics that constitute the vehicle — all manufactured by suppliers — carry embedded emissions that vastly exceed the assembly footprint. Add the lifetime fuel combustion of vehicles sold (Category 11: Use of Sold Products), and Scope 3 typically reaches 85-92% of total emissions.

This pattern holds across sectors, though the proportions shift:

Two sectors deserve special attention. BFSI (Banking, Financial Services, Insurance) has perhaps the most profound Scope 3 challenge: financed emissions (Category 15) typically represent over 90% of a bank’s total footprint, yet fewer than 5 Indian banks currently measure them. Cement is the exception where Scope 1 dominates (due to process emissions from clinker calcination), making it one of the few sectors where Scope 3 falls below 50%.

What Does BRSR Principle 6 Actually Require vs. Full GHG Protocol?

There is a meaningful gap between what SEBI’s BRSR framework currently requires and what the full GHG Protocol Standard demands. Understanding this gap is important because companies targeting only BRSR compliance will be underprepared for the broader regulatory and market expectations converging on Indian businesses.

Requirement	BRSR (Principle 6)	GHG Protocol Full	Gap for Indian Companies
Scope 1 reporting	Mandatory	Mandatory	Aligned
Scope 2 reporting	Mandatory	Mandatory (location + market-based)	Most Indian companies report only location-based
Scope 3 reporting	Leadership indicator (voluntary)	Mandatory for all material categories	Significant — most companies do not report
Category-level Scope 3	Not required	Required for all 15 categories	Major — no granular value chain data
Base year recalculation	Not specified	Required for structural changes	Most companies lack base year policies
Uncertainty assessment	Not required	Recommended	Virtually no Indian company performs this
Emission factors source	CEA factor referenced	Hierarchical: supplier-specific > country > default	Over-reliance on default factors

The practical implication: a company that is fully BRSR-compliant on Principle 6 may still be woefully underprepared for CDP questionnaires, SBTi target validation, supply chain customer requirements, or EU regulatory expectations. The BRSR bar, while rising, remains below the global standard that an increasing number of Indian companies’ customers and investors expect.

Which Scope 3 Categories Matter Most for Indian Companies?

Not all 15 Scope 3 categories are equally material for every company. A practical approach begins with identifying the 3-5 categories that represent the majority of value chain emissions, then building measurement capability outward. For Indian companies, the following categories consistently emerge as most material by sector:

Sector	Category 1: Purchased Goods	Category 4: Transport	Category 11: Use of Products	Category 15: Investments	Other Material
Auto / Mfg	45-55%	8-12%	20-30%	N/A	Cat 6, 7
IT / BPO	25-35%	5-8%	10-15%	N/A	Cat 6 (15-25%), Cat 7 (10-15%)
BFSI	2-5%	1-2%	N/A	85-95%	Cat 6, 7
FMCG	50-65%	10-15%	5-10%	N/A	Cat 12 (5-10%)
Metals	30-40%	10-15%	15-25%	N/A	Cat 3 (8-12%)
Pharma	40-55%	8-12%	3-5%	N/A	Cat 5, 6

Category 1 (Purchased Goods and Services) is the dominant Scope 3 category for most non-financial companies. For Indian manufacturers, this means the embedded carbon in raw materials — steel, chemicals, plastics, packaging — purchased from domestic and international suppliers. Calculating this requires either supplier-specific emission data (rare in Indian supply chains) or spend-based estimates using environmentally extended input-output (EEIO) models.

Category 6 (Business Travel) and Category 7 (Employee Commuting) are often the first categories Indian companies measure, because the data is relatively accessible through travel management systems and employee surveys. While they represent a small share of total Scope 3, they are low-hanging fruit that demonstrates measurement capability.

Why Are Indian Companies Lagging on Scope 3?

The 12% Scope 3 reporting rate among India’s top 1000 companies is not primarily a knowledge gap — it is a structural one. Four factors drive the lag:

1. Supply chain data opacity. India’s supply chains, particularly in manufacturing, are characterised by fragmented, multi-tier supplier networks with limited digital infrastructure. Unlike European supply chains where electronic data interchange is standard, many Indian tier-2 and tier-3 suppliers lack the systems to provide emission data. A typical Indian auto OEM may have 300-500 tier-1 suppliers and 3,000-5,000 tier-2 suppliers, many of which are SMEs without any environmental data collection capability.

2. Emission factor gaps. While CEA provides reliable grid emission factors, India lacks comprehensive national emission factor databases for materials, fuels, and processes. Companies either use generic global factors (which may not reflect Indian production processes) or invest in developing India-specific factors — a resource-intensive exercise that most companies avoid.

3. Methodological complexity. The GHG Protocol Scope 3 standard offers multiple calculation approaches (supplier-specific, hybrid, average-data, spend-based), each with different data requirements and accuracy levels. Without clear guidance from SEBI on acceptable methodologies, companies face decision paralysis or default to the least rigorous approach.

4. Regulatory ambiguity. Since BRSR treats Scope 3 as a leadership (voluntary) indicator, there is no regulatory forcing function. Companies that are compliance-driven rather than strategy-driven see no immediate penalty for not measuring Scope 3. This calculus is changing — but not fast enough.

What Are the SBTi Pathway Requirements for Indian Companies?

The Science Based Targets initiative (SBTi) represents the most rigorous external validation of corporate climate commitments, and it directly addresses the Scope 3 blind spot. As of early 2026, approximately 85 Indian companies have committed to or had targets validated by SBTi.

SBTi’s requirements are unambiguous: if Scope 3 emissions represent more than 40% of a company’s total footprint, the company must set a Scope 3 target. Given that Scope 3 exceeds 40% for virtually every sector except cement, this means most Indian SBTi participants must measure, disclose, and commit to reducing their Scope 3 emissions.

The pathway requirements under SBTi’s updated framework (effective 2025) include near-term targets aligned with 1.5 degrees C for Scope 1 and 2, and well-below 2 degrees C for Scope 3, with a validation timeline of 24 months from commitment. Companies that committed in 2024 must have validated targets by 2026 — creating an urgent need for robust Scope 3 measurement.

What Is the Real-World Cost of Ignoring Scope 3?

The consequences of Scope 3 blindness are not theoretical. They are manifesting now across three dimensions:

Market access risk. European buyers in automotive, textiles, and electronics are increasingly requiring supplier carbon data that includes Scope 3. Indian auto component manufacturers supplying to Volkswagen, BMW, and Stellantis are receiving supplier code of conduct updates that mandate Scope 1+2+3 disclosure by 2027. Non-compliant suppliers face tender exclusion. Similar requirements are emerging from US and Japanese OEMs.

Financial market consequences. Climate Action 100+, the investor engagement initiative with over USD 68 trillion in AUM, has explicitly named Indian companies (Reliance, NTPC, Grasim, Oil India) for enhanced climate disclosure expectations. MSCI, Sustainalytics, and other ESG rating agencies are systematically downgrading companies that lack Scope 3 data. For BFSI companies, PCAF-aligned financed emission disclosure is becoming a prerequisite for green bond issuance.

Regulatory trajectory. While SEBI currently treats Scope 3 as voluntary, the direction is clear. The ISSB’s IFRS S2 standard — which India has signalled intent to align with — requires Scope 3 disclosure for all material categories. Companies that wait for mandatory requirements will face a compressed timeline with no room for the iterative learning that early movers benefit from.

A Practical Scope 3 Roadmap for Indian Companies

Building Scope 3 measurement capability is a 12-18 month process for most companies. The following phased approach has proven effective across our client engagements:

Phase 1 (Months 1-3): Screening and materiality. Conduct a high-level screening across all 15 Scope 3 categories using spend data and industry benchmarks to identify the 3-5 categories that represent 80%+ of your value chain emissions. RSustain’s ScopeTracer tool automates this screening process, providing category-level estimates within minutes.

Phase 2 (Months 3-6): Data collection architecture. For material categories, design data collection processes that integrate with existing procurement, travel, and logistics systems. Engage key suppliers (typically the top 20 by spend represent 60-80% of purchased goods emissions) to understand their emission data availability. Establish emission factor hierarchies: supplier-specific where available, then India-specific, then global defaults.

Phase 3 (Months 6-12): First calculation and baselining. Execute the first complete Scope 3 calculation for material categories. This will inevitably use a mix of calculation methods — spend-based for most suppliers, supplier-specific for a few, average-data for transportation. The goal is a directionally accurate baseline, not precision. Document all methodologies and assumptions rigorously for future assurance.

Phase 4 (Months 12-18): Refinement and target-setting. Improve data quality by replacing spend-based estimates with activity-based calculations where possible. Conduct sensitivity analysis to understand which assumptions most affect total Scope 3. Use the refined inventory as the basis for SBTi target-setting or internal reduction commitments.

Building the Business Case: Scope 3 as Competitive Advantage

The framing of Scope 3 as a compliance burden misses the strategic opportunity. Companies that build Scope 3 measurement capability early gain three distinct advantages:

Supplier engagement leverage. Companies that understand their supply chain carbon hotspots can engage suppliers on decarbonisation in ways that reduce both emissions and costs. Energy efficiency improvements at supplier sites, material substitution, and logistics optimisation often deliver financial returns alongside emission reductions.

Product carbon footprint differentiation. As product-level carbon labelling gains traction — driven by the EU’s Digital Product Passport initiative and consumer demand — companies with robust Scope 3 data can calculate and communicate product carbon footprints. This is a competitive differentiator in export markets and increasingly in domestic B2B procurement.

Investor and lender preference. Green bonds, sustainability-linked loans, and ESG-screened equity funds all favour companies with comprehensive carbon inventories. The cost of capital differential between ESG leaders and laggards in Indian markets has widened to approximately 50-80 basis points for BBB-rated issuers — a material financial incentive.

The Path Forward: From Blind Spot to Strategic Asset

Scope 3 is not going to remain optional. The convergence of SEBI’s evolving BRSR framework, ISSB alignment, SBTi requirements, EU supply chain regulations, and investor expectations creates an inescapable trajectory toward mandatory, assured value chain carbon disclosure.

The question for Indian companies is not whether to measure Scope 3, but whether to do it on their own terms and timeline — capturing the strategic advantages of early action — or to be forced into it by regulatory deadlines and customer mandates, with no runway for learning or optimisation.

The companies that treat Scope 3 as a strategic investment rather than a compliance burden will find themselves with stronger supplier relationships, lower cost of capital, preferred market access, and a genuine understanding of where their business intersects with the physical reality of climate change.

For companies ready to begin, RSustain’s GHG Assurance Readiness tool provides a comprehensive assessment of your current carbon accounting capability and a prioritised roadmap for achieving assurance-ready quality across Scope 1, 2, and 3.

Frequently Asked Questions About Scope 3 and Carbon Accounting

What is Scope 3 emissions and why is it important for Indian companies?

Scope 3 emissions are indirect greenhouse gas emissions that occur across a company’s value chain, both upstream (purchased goods and services, business travel, employee commuting) and downstream (use of sold products, end-of-life treatment). For most Indian companies, Scope 3 represents 70-90% of their total carbon footprint. It is critical because SEBI’s BRSR framework increasingly requires Scope 3 disclosure, global investors use it for portfolio carbon assessments, and SBTi requires Scope 3 target-setting for companies where it exceeds 40% of total emissions. Companies ignoring Scope 3 are effectively ignoring the vast majority of their climate impact and exposure.

How do you calculate Scope 3 emissions for an Indian company?

Scope 3 calculation follows the GHG Protocol Corporate Value Chain (Scope 3) Standard. For Indian companies, this involves: (1) identifying the most material Scope 3 categories using a screening exercise, (2) collecting activity data from suppliers, travel systems, procurement records, and logistics partners, (3) applying emission factors from Indian-specific databases (CEA for electricity, IPCC for fuels, industry databases for materials), and (4) aggregating and reporting by category. Start with 3-5 material categories rather than attempting all 15. RSustain’s ScopeTracer automates the initial screening and provides sector-specific guidance.

What emission factor should Indian companies use for electricity in carbon accounting?

Indian companies should use the Central Electricity Authority (CEA) grid emission factor for Scope 2 electricity calculations. The most recent CEA factor (FY 2023-24) is 0.716 tCO2/MWh for the combined margin. For more accurate calculations, companies can use regional grid factors (Southern grid is cleaner than Northern grid due to higher renewable penetration) or, where applicable, supplier-specific emission factors for renewable energy procurement through bilateral PPAs or green tariffs. The CEA updates this factor annually, and companies should use the factor corresponding to their reporting year.

Is Scope 3 reporting mandatory under SEBI BRSR?

BRSR currently classifies Scope 3 as a leadership indicator (voluntary) in the main BRSR format. However, BRSR Core metrics include value chain disclosures that encompass elements of Scope 3. As BRSR Core assurance extends to all top 1000 companies by FY 2026-27, and as SEBI aligns with ISSB’s IFRS S2 standard (which requires material Scope 3 disclosure), Scope 3 reporting will effectively become mandatory for leading companies. Companies that wait for explicit mandates will face a compressed timeline with insufficient preparation runway.

What are the most common Scope 3 categories for Indian manufacturing companies?

For Indian manufacturing companies, the most material Scope 3 categories are typically: Category 1 (Purchased Goods and Services) representing 40-60% of Scope 3, Category 4 (Upstream Transportation and Distribution) at 10-20%, Category 11 (Use of Sold Products) at 15-30% for companies selling energy-consuming products, Category 6 (Business Travel) at 2-5%, and Category 7 (Employee Commuting) at 1-3%. Categories 6 and 7 are often measured first due to data accessibility, but Category 1 typically requires the most effort and yields the most material results.

What is the SBTi and how many Indian companies have set Science Based Targets?

The Science Based Targets initiative (SBTi) validates corporate emission reduction targets against climate science to limit warming to 1.5 degrees C. As of early 2026, approximately 85 Indian companies have committed to or had targets validated by SBTi. The IT sector leads adoption (Infosys, Wipro, TCS, Tech Mahindra), followed by automotive (Mahindra, Tata Motors) and FMCG (Hindustan Unilever, Godrej Consumer). SBTi requires companies to set Scope 3 targets when Scope 3 exceeds 40% of total emissions — which applies to virtually every Indian company outside the cement sector. RSustain’s SBTi Pathway tool helps companies navigate the commitment-to-validation process.