Carbon Footprint Assessment for Factories and Manufacturing Plants: Process, Benefits, and Compliance

India is now the world's third-largest emitter of greenhouse gases, generating approximately 4 billion metric tonnes of CO2 equivalent (GtCO2e) per year. The industrial and manufacturing sector accounts for roughly 25% of India's total energy-related carbon emissions, second only to the power sector. For factories and manufacturing plants, this is no longer an abstract environmental concern. It is a compliance obligation, a supply chain requirement, and an increasingly direct line into capital costs, insurance premiums, and buyer relationships.

India's regulatory landscape has shifted decisively. The Carbon Credit Trading Scheme (CCTS), notified by the Government of India in July 2024 through the Bureau of Energy Efficiency (BEE), transitions industrial units from energy efficiency targets under the legacy PAT (Perform, Achieve and Trade) scheme to hard GHG emission intensity targets expressed in tCO2e per unit of output. The first compliance year runs from September 2025 to March 2026, and the full carbon market is expected to be operational by mid-2026. Nine industrial sectors are initially covered:

• Aluminium
• Cement
• Chlor-alkali
• Fertiliser
• Iron and steel
• Pulp and paper
• Petrochemicals
• Petroleum refining
• Textiles

More sectors will follow.

For manufacturing plants not yet covered by the CCTS, the pressure arrives from a different direction: export customers, institutional buyers, ESG-driven investors, and lenders who are increasingly embedding carbon disclosure requirements into procurement contracts and loan covenants. The question for Indian factory owners has moved from "should we do a carbon footprint assessment?" to "how do we do a carbon footprint assessment correctly, and how do we do it in time?"

What Is a Carbon Footprint Assessment for a Factory?

A carbon footprint assessment (CFA) is a structured, data-driven process that quantifies all greenhouse gas (GHG) emissions generated directly and indirectly by a manufacturing facility. The output is a verified emissions inventory expressed in tonnes of CO2 equivalent (tCO2e) across three defined scopes:

Scope 1 (Direct emissions): Combustion of fuel in boilers, furnaces, kilns, generators, and process equipment. Fugitive emissions from refrigerants and chemical processes. Fleet emissions from owned vehicles. For a typical medium-scale manufacturing plant, Scope 1 emissions from thermal energy consumption often account for 45 to 65% of total facility emissions.

Scope 2 (Indirect energy emissions): GHG emissions associated with purchased electricity and steam. India's grid emission factor, as published by the Central Electricity Authority (CEA), currently stands at 0.82 kg CO2e per kWh for the national grid, though state-specific factors vary. A plant consuming 500,000 kWh per month carries a Scope 2 burden of approximately 410 tCO2e per month from grid electricity alone.

Scope 3 (Value chain emissions): Upstream and downstream emissions including raw material extraction and transportation, supplier manufacturing, outbound logistics, product use, and end-of-life disposal. While not always mandatory for initial compliance, Scope 3 is increasingly required by export customers and ESG-rated investors, and typically represents 70 to 90% of a manufacturer's total carbon footprint once the full value chain is included.

Key Factors Considered in a Carbon Footprint Assessment

A rigorous CFA is not a checkbox exercise. The following factors are assessed for every manufacturing facility:

• Energy consumption data: Monthly utility bills, sub-meter readings, fuel purchase records, diesel consumption logs, and boiler fuel usage. Typically, 12 months of historical data forms the baseline.

• Production output and intensity metrics: Emissions are benchmarked against production volume to calculate GHG intensity (tCO2e per tonne of product, or tCO2e per INR crore of revenue). The CCTS specifically uses emission intensity as its compliance metric.

• Fuel type and calorific value: Coal, furnace oil, natural gas, LPG, biomass, and diesel each carry different emission factors per GJ of energy content. Facilities burning multiple fuel types require weighted emission factor calculations.

• Process emissions: Chemical reactions that release CO2 or other GHGs independently of energy consumption — calcination in cement kilns, fermentation in food processing, chemical reduction in metal production — must be quantified separately from combustion emissions.

• Refrigerant type and leakage rate: HFCs used in industrial refrigeration and HVAC systems carry Global Warming Potentials (GWP) of 1,000 to 14,800 times that of CO2. Even small refrigerant leakage volumes can represent significant GHG quantities. The GWP of R-410A, widely used in industrial cooling, is 2,088 CO2e per kg.

• Waste generation and treatment: Landfill waste generates methane as it decomposes, with a GWP of 28 times that of CO2 over a 100-year period. Wastewater treatment under anaerobic conditions also generates measurable GHG emissions.

• Supply chain and logistics emissions (Scope 3): Transport distance, vehicle type, fuel efficiency, and freight mode (road, rail, sea, air) are all quantified for inbound raw materials and outbound finished goods.

• Renewable energy contribution: On-site solar, wind, or biomass installations offset grid electricity consumption and reduce Scope 2 emissions. Renewable Energy Certificates (RECs) are factored into net emissions calculations.

The Carbon Footprint Assessment Process

A structured CFA follows a defined methodology based on the ISO 14064-1 standard (GHG quantification and reporting for organisations) and the GHG Protocol Corporate Accounting and Reporting Standard, both of which are referenced by India's CCTS MRV (Measurement, Reporting and Verification) framework published by BEE in July 2024.

The process covers six stages, from boundary definition through to third-party verification and reduction planning:

• Stage 1: Define boundary and scope. The assessment begins by establishing the organisational boundary (which legal entities and facilities are included) and the operational boundary (which emission sources are covered). The base year is selected, typically the most recent 12-month period with complete data. Scope 1, 2, and Scope 3 categories are elected based on materiality, regulatory requirements, and buyer disclosure obligations.

• Stage 2: Collect activity data. All energy and process data is gathered for the base year — monthly electricity bills, fuel purchase invoices, diesel consumption logs, boiler fuel records, refrigerant top-up quantities, production output volumes, waste manifests, and inbound and outbound logistics records. Data quality is reviewed at this stage; gaps or inconsistencies are resolved before calculations begin.

• Stage 3: Calculate GHG emissions. Activity data is multiplied by the appropriate emission factors to convert physical quantities into tCO2e. For grid electricity, India's CEA national emission factor of 0.82 kg CO2e per kWh is applied, or state-specific factors where applicable. Fuel combustion uses IPCC emission factors adjusted for net calorific value. Refrigerant emissions use GWP values from the IPCC Fifth Assessment Report. All three scopes are calculated separately and then consolidated into a single verified tCO2e inventory.

• Stage 4: Analyse and benchmark. The total emissions inventory is expressed as a GHG intensity metric — tCO2e per tonne of product, or tCO2e per unit of revenue — and benchmarked against the CCTS sector trajectory targets published by BEE. Hotspot analysis identifies which processes, fuels, or supply chain segments contribute the greatest share of emissions, directly informing where reduction investments will deliver the highest impact.

• Stage 5: Prepare the GHG report. The emissions inventory, methodology, data sources, emission factors, and assumptions are documented in a structured report aligned with ISO 14064-1 requirements. The report is formatted to satisfy CCTS MRV submission requirements, BRSR disclosure obligations for listed company supply chains, and ESG investor due diligence requests. A reduction roadmap with prioritised interventions and quantified savings is included.

• Stage 6: Third-party verification. Under the CCTS framework, the GHG report must be verified annually by a BEE-accredited Carbon Verification Agency (CVA). The verifier independently reviews data, checks calculation methodology, and issues a verification statement confirming the reported emissions are free from material misstatement. Verified reports are the basis for CCC issuance to outperforming entities and CCC surrender obligations for those falling short of their assigned targets.

Government Schemes and Regulatory Frameworks Driving Compliance

Understanding the regulatory landscape is critical for Indian manufacturers assessing their carbon obligations.

Perform, Achieve and Trade (PAT) Scheme: India's flagship energy efficiency market mechanism, launched in 2012 under BEE, has covered over 1,073 designated consumers (DCs) from 13 industrial sectors across six cycles. Since 2015, the PAT scheme has enabled Indian industries to avoid more than 106 million tonnes of CO2 emissions (BEE, June 2024). Facilities currently covered by PAT are the first to transition into the CCTS.

Carbon Credit Trading Scheme (CCTS): Notified in July 2024, the CCTS establishes India's compliance carbon market. The BEE serves as administrator; Carbon Credit Certificates (CCCs) will be traded on India's power exchanges under CERC oversight. Entities that reduce GHG emission intensity below their assigned target earn CCCs they can sell. Entities that fall short must purchase CCCs to cover the shortfall. The Greenhouse Gas Emission Intensity Target Rules, 2025 (G.S.R. 739(E), notified October 8, 2025) set the first sector-specific intensity targets running to 2030.

India's Nationally Determined Contributions (NDC): India has committed under the Paris Agreement to reduce the emission intensity of its GDP by 45% by 2030 compared to 2005 levels, and to achieve 50% of its cumulative electric power capacity from non-fossil sources by 2030. These national commitments translate directly into industrial sector targets under the CCTS trajectory.

Net Zero by 2070: India's long-term Low-Carbon Development Strategy sets a net zero target for 2070, establishing a multi-decade decarbonisation pathway that makes carbon management capability a permanent operational requirement, not a temporary compliance exercise.

National Action Plan on Climate Change (NAPCC): India's eight-mission climate framework includes the National Mission for Enhanced Energy Efficiency (NMEEE), under which the PAT scheme operates, and the National Mission on Sustainable Habitat, both of which affect industrial facility compliance requirements.

For facilities targeting export markets, the EU Carbon Border Adjustment Mechanism (CBAM) imposes carbon price obligations on imports of cement, steel, aluminium, fertiliser, electricity, and hydrogen entering the EU from 2026 onwards. Indian manufacturers in these sectors exporting to Europe face a direct financial liability proportional to the carbon intensity of their production that has no equivalent in non-CBAM markets.

ROI of Carbon Footprint Assessment: The Financial Case

For factory owners approaching carbon assessment as a cost, the financial case for early investment is clear:

• Energy cost savings from emission reduction: Carbon footprint assessments consistently identify energy efficiency opportunities that deliver 10 to 25% reductions in energy costs within 18 to 24 months of implementation. For a manufacturing plant spending INR 2 crore per month on energy, a 15% efficiency improvement generates INR 3.6 crore in annual savings that recur every year thereafter.

• Carbon credit revenue: Under the CCTS, facilities that outperform their emission intensity targets earn CCCs. As India's carbon market matures toward 2026 and beyond, carbon credit prices are expected to establish a tradeable value. Early movers who invest in emissions reduction now will be positioned to generate credit revenue as the market develops.

• Export market access: The EU CBAM creates a direct financial penalty for carbon-intensive production in sectors it covers. Indian manufacturers who have documented their carbon footprint and invested in reduction measures will face lower CBAM obligations than competitors who have not. For steel manufacturers, cement producers, and aluminium smelters targeting European buyers, carbon performance is already embedded in procurement criteria.

• Insurance and lending terms: ESG-linked lending products from Indian and international banks now routinely include sustainability-linked covenants. Facilities with verified carbon data and documented reduction roadmaps access better loan terms. Conversely, facilities with no carbon data are increasingly viewed as higher-risk by lenders concerned about stranded asset exposure from future carbon regulation.

• Investor and buyer requirements: India's BRSR (Business Responsibility and Sustainability Reporting) framework, mandatory for the top 1,000 listed companies from FY 2022-23, requires GHG emission disclosure. Facilities in the supply chains of listed companies face cascading disclosure requirements. 80% of beauty and consumer brands are now mandating sustainability and ethical sourcing from their suppliers, a figure that extends across manufacturing sectors as ESG procurement becomes standard.

How IMARC Engineering Helps with Carbon Footprint Assessment Under Environmental Impact and Sustainability Studies

IMARC Engineering provides carbon footprint assessment services specifically designed for manufacturing plants and industrial facilities across India, combining technical rigour with regulatory expertise to deliver carbon assessments that are credible, compliant, and commercially actionable. Whether you are planning ESG reporting, environmental approvals, export compliance, or sustainability optimization, our experts help you identify emission hotspots, reduce operational risks, and build a practical roadmap toward lower-carbon industrial operations.

Their engagement scope covers the complete carbon footprint assessment lifecycle:

• Facility-level GHG inventory development across Scope 1, 2, and 3 emissions
• Emission factor selection aligned with CEA grid factors, IPCC values, and BEE MRV guidelines
• ISO 14064-1 and GHG Protocol-compliant reporting
• Carbon intensity benchmarking against CCTS sector trajectories
• Energy audit integration to identify and quantify reduction opportunities
• Life cycle assessment (LCA) for product-level carbon disclosure
• ESG framework advisory for BRSR compliance and investor reporting
• Reduction roadmap development covering energy efficiency, fuel switching, renewable integration, and process optimisation
• Support for third-party verification by BEE-accredited Carbon Verification Agencies

For manufacturers preparing for CCTS compliance, targeting export market sustainability requirements, responding to investor ESG due diligence, or simply looking to reduce energy costs through systematic emissions management, IMARC Engineering provides the technical partnership that converts a compliance obligation into a competitive advantage.

Connect with the IMARC Engineering team to discuss how a professional carbon footprint assessment can protect your regulatory position, reduce your energy costs, and strengthen your access to export markets, capital, and long-term buyer relationships.