Carbon Accounting for Chemical Companies in India

India's chemical sector is a global powerhouse, generating over USD 180 billion in annual revenue and employing millions of workers across manufacturing and exports. Companies like Reliance Industries, UPL, Pidilite, and Tata Chemicals dominate the SEBI top 1000 list, but their scale brings regulatory responsibility. With BRSR (Business Responsibility and Sustainability Reporting) mandatory for large listed companies, CCTS (Carbon Credit Trading Scheme) opportunities emerging, and CBAM (Carbon Border Adjustment Mechanism) looming for EU exporters, Indian chemical manufacturers face complex carbon accounting requirements in 2026.

Understanding Emissions in the Indian Chemicals Sector

Major Emission Sources Across Scopes

Indian chemical companies generate emissions across all three scopes of the GHG Protocol. Process emissions from chemical reactions - such as ammonia synthesis, chlor-alkali processes, and organic synthesis - represent significant Scope 1 sources. High-temperature process heat for distillation, polymerization, and drying operations also falls under Scope 1 and is often a company's largest emission stream.

Scope 2 emissions arise from purchased electricity, particularly for electrochemical processes like chlor-alkali production, electroplating, and metal refinement. As India's grid intensity remains elevated (though improving), Scope 2 can represent 15-30% of total emissions in electricity-intensive chemical plants.

Scope 3 emissions are equally critical but frequently overlooked. Raw material supply chains - including mining, refining, and transportation of crude oil, natural gas, phosphate rock, and mineral ores - often exceed direct emissions. Downstream emissions from customer use of chemical products (such as refrigerants, propellants, and solvents) must also be quantified for accurate carbon footprinting.

Sector-Specific Challenges

Chemical companies struggle with process emissions because they are inherent to chemical reactions, not merely energy consumption. Unlike a power plant that can switch fuel sources, a chlor-alkali plant cannot eliminate chlorine from saltwater. This makes abatement harder and tracking more complex.

BRSR Compliance for Chemical Manufacturers

Mandatory Reporting Requirements

BRSR Part C requires Indian chemical companies in the top 1000 by market capitalization to report greenhouse gas emissions (Scope 1, 2, and 3) alongside traditional air quality metrics. This dual approach reflects India's air pollution crisis - chemical plants must disclose emissions of NOx, SOx, and particulate matter (PM) in addition to CO2e.

Key BRSR requirements for chemical sector include:

• Absolute Scope 1 and Scope 2 emissions in tonnes CO2e
• Intensity metrics (emissions per unit of production or revenue)
• Scope 3 emissions categories that are material to your business
• Third-party assurance (limited assurance minimum; reasonable assurance recommended)
• Year-on-year comparison and targets for emission reductions

Integration with Air Quality Reporting

BRSR also mandates disclosure of air pollutants. Chemical companies must measure and report:

• Nitrogen oxides (NOx) from combustion processes
• Sulfur dioxide (SOx) from sulfur-containing feedstocks
• Particulate matter (PM) from crushing, grinding, and material handling
• Volatile organic compounds (VOCs) where material

This integrated air quality and GHG reporting reflects a holistic sustainability view - reducing process emissions often reduces air pollutants simultaneously.

CCTS Eligibility and Opportunities

Which Chemical Processes Qualify?

The How CCTS Works in India framework opens pathways for chemical companies to generate carbon credits. Certain chemical sector activities qualify, including:

• Energy efficiency projects in existing plants (equipment upgrades, process optimization)
• Renewable energy adoption (solar, wind, biomass)
• Waste heat recovery and co-generation systems
• Process improvements reducing fugitive emissions
• Methane capture from fermentation or organic waste

Chemical companies cannot currently generate credits for process emission reductions (the inherent emissions from ammonia synthesis or chlor-alkali). However, any efficiency project reducing Scope 1 energy consumption or Scope 2 electricity purchases generates tradable credits.

Calculating Baseline and Additionality

Baseline establishment is critical. A chlor-alkali plant switching from older to newer electrodes (reducing electricity per tonne of chlorine) must establish the counterfactual - what would have happened without the project. Additionality is harder for chemical manufacturers than renewable energy developers, requiring robust documentation of why the project would not proceed without carbon credit revenue.

CBAM: The Export Challenge

Embedded Carbon and Compliance

Indian chemical exporters to the EU face mounting pressure from CBAM, which applies to fertilizers, organic chemicals, and plastics from 2026 onwards. CBAM requires proof of embedded carbon (GHG intensity per unit of product). Companies unable to demonstrate lower emissions than EU default values face carbon charges.

For Indian ammonia exporters, embedded carbon typically ranges 1.5-2.5 tonnes CO2e per tonne of product, depending on energy source and process efficiency. EU default values may be higher, creating a compliance advantage. However, failure to report accurately invites penalties.

Preparation Steps Now

Chemical exporters must:

• Map Scope 1, 2, and 3 emissions across production and transport to port
• Calculate product-level carbon intensity using allocation methodologies (mass, energy, or market value)
• Establish audit trails for raw material sourcing and electricity provenance
• Prepare declarations for EU customs authorities

Carbon Accounting for Manufacturing Companies in India provides broader context, but chemical exporters need sector-specific guidance on how to allocate emissions across joint products and by-products.

FAQ

Which chemical companies must file BRSR in India?

All Indian chemical companies listed on NSE or BSE with market capitalization in the top 1000 must file BRSR annually. Unlisted chemical manufacturers are not currently mandated, but large private producers should prepare for potential future inclusion as BRSR scope expands.

How do I calculate process emissions for chemical manufacturing?

Process emissions require facility-specific data: production volumes, feedstock compositions, and reaction stoichiometry. Use IPCC methodologies or USEPA Tier 2/3 approaches. Unlike energy-based calculations, process emissions cannot be estimated from utility bills; they demand engagement with technical teams and, often, third-party testing to establish emission factors.

Does the chemical sector qualify for CCTS credits?

Yes, but only for efficiency and renewable energy projects, not for inherent process emission reductions. A plant installing solar power or recovering waste heat generates credits; one optimizing ammonia synthesis does not, because the emission reduction is not additional to normal business improvement.

How does CBAM affect Indian chemical exporters?

CBAM applies escalating carbon charges to chemical exports to the EU from 2026. Exporters must calculate and declare product-level embedded carbon intensity. Those with below-average emissions avoid charges; those above face levies. Preparation now - mapping emissions and securing low-carbon feedstock - is critical.

When are BRSR and CCTS reports due in 2026?

BRSR filings are due by 30 June 2026 for FY 2025-26. CCTS credit generation and trading are ongoing throughout the year; projects must be registered before issuance. CBAM declarations to EU customs are required at point of import.