As climate change accelerates, businesses around the globe are under increasing pressure to measure and manage their environmental impact. In India, where sustainability has become a key focus in both corporate and regulatory spheres, the accurate calculation of greenhouse gas (GHG) emissions is a critical step for companies looking to align with global climate goals and comply with emerging domestic frameworks.
Why GHG Emission Calculation Matters
GHG emissions contribute directly to global warming, and their reduction is pivotal to meeting the targets of the Paris Agreement, which India ratified in 2016. For Indian companies, quantifying these emissions offers multiple benefits:
- Regulatory Compliance: With the Securities and Exchange Board of India (SEBI) mandating Business Responsibility and Sustainability Reporting (BRSR) for the top 1,000 listed companies, GHG accounting is no longer optional.
- Investor Transparency: ESG-conscious investors increasingly require clear climate disclosures.
- Operational Efficiency: Emissions data often reveal opportunities for energy savings and cost reductions.
- Reputational Gains: Demonstrating commitment to sustainability enhances brand value and stakeholder trust.
Frameworks and Standards
Indian companies generally follow internationally accepted protocols and methodologies for GHG emissions calculation. These include:
- The Greenhouse Gas Protocol (GHG Protocol): A widely adopted international accounting tool, developed by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD).
- ISO 14064: An international standard for quantifying and reporting GHG emissions.
- BRSR Core Framework: Recently introduced by SEBI, this includes GHG emissions among key metrics for sustainability reporting.
Categories of GHG Emissions
Under the GHG Protocol, emissions are classified into three scopes:
- Scope 1 (Direct Emissions): Emissions from sources owned or controlled by the company (e.g., boilers, furnaces, vehicles).
- Scope 2 (Indirect Emissions): Emissions from the generation of purchased electricity, steam, heating, and cooling consumed by the company.
- Scope 3 (Other Indirect Emissions): Emissions that occur in the value chain of the reporting company, including business travel, transportation, waste disposal, and product use.
Step-by-Step Process for GHG Emissions Calculation
1. Define Organizational Boundaries
Companies must choose between:
- Equity Share Approach: Based on the share of equity held.
- Control Approach: Based on operational or financial control.
2. Determine Operational Boundaries
Identify activities that fall under Scope 1, 2, and 3 emissions.
3. Collect Activity Data
Gather data from:
- Fuel and electricity bills
- Meter readings
- Travel logs
- Waste records
- Supplier and product lifecycle data
4. Apply Emission Factors
Emission factors translate activity data into GHG emissions. Common sources include:
- IPCC Guidelines
- India GHG Program
- Central Electricity Authority (CEA) emission factors for grid electricity
5. Calculate Emissions
Use the formula:
GHG Emissions (tCO₂e) = Activity Data × Emission Factor
Where “tCO₂e” denotes tonnes of carbon dioxide equivalent, allowing for aggregation of various greenhouse gases.
6. Verify and Report
Data should be:
- Internally verified
- Optionally audited by a third-party
- Disclosed via sustainability reports, CDP, or the BRSR framework
Tools and Platforms
Indian companies can use various tools to streamline calculations:
- GHG Protocol Calculation Tools
- India GHG Inventory Management Tool
- Custom Excel-based models
- SaaS platforms like Sustainol, Greenly and Plan A
Sector-Specific Considerations
Each industry has its own emissions profile:
- Manufacturing: High Scope 1 from process emissions and fuel use.
- IT and Services: Primarily Scope 2 from electricity consumption.
- Agriculture and FMCG: Significant Scope 3 emissions in supply chains.
Challenges Faced by Indian Companies
- Data Availability: Especially for Scope 3 emissions.
- Lack of Standardization: Variability in emission factors and reporting formats.
- Capacity Gaps: Limited technical expertise in GHG accounting.
- Cost Constraints: Particularly for small and medium enterprises (SMEs).
The Road Ahead
India’s commitment to achieve net zero emissions by 2070 necessitates that its corporate sector plays a pivotal role. As carbon pricing mechanisms, ESG disclosures, and green financing gain traction, companies that proactively calculate and reduce GHG emissions will be better positioned to thrive in a low-carbon economy.
Conclusion
For Indian companies, GHG emission calculation is not merely a regulatory checkbox—it’s a strategic imperative. With growing expectations from regulators, investors, and consumers, those who lead in transparent and accurate emissions accounting will shape the sustainable businesses of tomorrow.
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