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Understanding Scope 1, 2, and 3 emissions: A complete guide for ESG Managers

August 23, 2024

Table of Contents

As the urgency to address climate change intensifies, understanding the various aspects of greenhouse gas (GHG) emissions has become essential for businesses. For ESG managers and sustainability consultants, grasping the nuances of Scope 1, 2, and 3 carbon emissions is critical for developing effective sustainability strategies. This comprehensive guide delves into the definitions, relevance, measurement, and challenges associated with Scope 1, 2, and 3 emissions, providing practical insights and solutions to enhance your organization’s environmental performance.

Let’s have a look into the different scopes

Scope 1 emissions

Scope 1 emissions are direct GHG emissions from sources owned or controlled by a company. It is reported under three categories:

· Stationary combustion: These are emission produced from fuels which are burnt to produce electricity, heat, steam or power in stationary equipment

· Mobile combustion: This refers to the emission produced from company owned or controlled equipment or vehicles

· Fugitive emissions: These are emission from equipment or facilities due to the release of gases. For example leaks from air conditioning units.

Emissions from a powerplant

Scope 2 emissions

Scope 2 emissions are indirect GHG emissions from the consumption of purchased electricity, steam, heat, or cooling. Although these emissions occur at the facility where they are generated, they are attributed to the company that uses the energy. For instance, if an office building uses electricity produced by a coal-fired power plant, the emissions from generating that electricity are classified as Scope 2.

Scope 3 Emissions

Scope 3 emissions encompass all other indirect emissions that occur in a company’s value chain. This includes both upstream and downstream emissions, such as those from the production and transportation of purchased goods and services, waste disposal, business travel, employee commuting, and the use of sold products. On average, Scope 3 emissions can constitute up to 70% of a company’s total emissions, making them a significant component of its carbon footprint.

Why are Scope 1, 2, and 3 emissions relevant for us?

Understanding and measuring Scope 1, 2, and 3 emissions is essential for both businesses and global climate health. These categories, defined by the Greenhouse Gas Protocol, provide a comprehensive framework for assessing and managing a company's total carbon footprint.

1. Comprehensive Carbon Footprint Assessment

Scope 1, 2, and 3 emissions collectively offer a detailed view of a company's carbon impact. Scope 1 refers to direct emissions from owned or controlled sources, such as emissions from fuel combustion in company vehicles or facilities. Scope 2 encompasses indirect emissions from the generation of purchased electricity, steam, heating, and cooling consumed by the reporting company. Scope 3 includes all other indirect emissions that occur in the company’s value chain, both upstream and downstream. This broad scope of measurement is crucial because it encompasses the entire lifecycle of a product or service, from raw material extraction to end-of-life disposal.

2. Climate-Related Risk Mitigation and Operational Efficiency

By analyzing Scope 1, 2, and 3 emissions, businesses can better understand their exposure to climate-related risks. These include physical risks from climate change, such as extreme weather events affecting supply chains, and transitional risks associated with regulatory changes and market shifts toward sustainability. For example, the introduction of stricter emission regulations or carbon pricing mechanisms can impact operational costs and profitability.

Additionally, measuring and managing these emissions can lead to improved operational efficiency. Reducing Scope 1 emissions might involve optimizing energy use in production processes, while addressing Scope 2 emissions could mean investing in renewable energy sources. Efficient management of Scope 3 emissions might involve collaboration with suppliers to improve sustainability practices. These improvements not only reduce carbon footprints but can also lead to cost savings and operational benefits.

3. Enhanced Reputation and Compliance

Companies that proactively measure and reduce their Scope 1, 2, and 3 emissions often see enhanced reputations among stakeholders, including customers, investors, and regulatory bodies. Transparency in emissions reporting demonstrates a commitment to sustainability and can strengthen stakeholder trust. According to a recent Deloitte report, companies that are transparent about their emissions and actively work to reduce them are better positioned to attract investment and maintain a competitive edge in the market.

Moreover, understanding and reporting these emissions are vital for regulatory compliance and sustainability reporting standards. Many jurisdictions are increasingly implementing mandatory emissions reporting and reduction targets. For instance, the European Union’s Corporate Sustainability Reporting Directive (CSRD) and the U.S. Securities and Exchange Commission’s (SEC) climate disclosure rules require detailed reporting on carbon emissions, including Scope 1, 2, and 3.

4. Addressing the Major Contributor to Climate Change

Carbon dioxide (CO2) is the most significant greenhouse gas emitted by human activities, accounting for approximately 76% of total greenhouse gas emissions, according to the Environmental Protection Agency (EPA). Managing CO2 emissions across all scopes is critical for mitigating global warming. Each scope provides insight into different aspects of emissions, making it possible to target specific sources of CO2 more effectively.

Practical examples for successful Scope 1, 2, and 3 emissions management at a company level 

Scope 1 Emissions: 

· Adopt Electric Vehicles (EVs): Transitioning from gasoline or diesel-powered vehicles to electric vehicles in a company’s fleet can significantly reduce Scope 1 emissions. This not only cuts down on carbon dioxide emissions but also other pollutants like nitrogen oxides and particulate matter.

· Implement On-Site Renewable Energy: Installing solar panels or wind turbines on company premises to generate electricity can help reduce dependence on fossil fuels. 

An electric car charging

Scope 2 Emissions:

· Purchasing Renewable Energy Certificates (RECs): RECs represent proof that electricity has been generated from renewable energy sources. By purchasing RECs, companies can offset their Scope 2 emissions. Microsoft, for example, has committed to 100% renewable energy by purchasing RECs globally.

· Energy Efficiency Upgrades: Upgrading to energy-efficient lighting, heating, ventilation, and air conditioning (HVAC) systems can reduce the amount of purchased electricity needed.

Scope 3 Emissions:

· Supplier Engagement: Working closely with suppliers to reduce their emissions is crucial. Collaborate with your suppliers to reduce emissions throughout the supply chain by setting science-based targets and sharing best practices.

· Product Lifecycle Management: Companies can design products with their entire lifecycle in mind, including end-of-life disposal. You could focus on using recycled materials in products and designing for longevity.

Measuring Scope 3 emissions

Scope 3 emissions are often the most challenging to measure due to their complexity and the extensive data required. The GHG Protocol outlines 15 categories of Scope 3 emissions, ranging from purchased goods and services to end-of-life treatment of sold products. These categories provide a structured approach to identifying and calculating Scope 3 emissions. For example, emissions from business travel, waste generated in operations, and downstream transportation and distribution are all included under Scope 3. On average, Scope 3 emissions can make up a significant portion of a company's total emissions. This highlights the need for a robust strategy to measure and manage these emissions effectively. Accurate measurement of Scope 3 emissions involves collecting data from various suppliers and partners, often requiring collaboration and data-sharing across the supply chain.

For a deeper understanding of the importance of accurate carbon accounting, which is crucial for effective Scope 3 emissions measurement, read our detailed blog post on carbon accounting vs carbon management.

Swiss Air plane docked at an airport

Potential difficulties in measuring Scope 1, 2, and 3 emissions

Measuring Scope 1, 2, and 3 emissions presents several challenges. Obtaining accurate data is often difficult, especially for Scope 3 emissions, which require data from multiple suppliers and external partners. This data is frequently scattered across different teams and departments within an organization, making it hard to centralize and analyze.

Many companies also struggle with having small teams and a lack of expertise in sustainability reporting. Often, one person is tasked with collecting all the necessary data, which can be overwhelming without the right tools and knowledge.

Additionally, not having the right technology can hinder effective measurement and reporting. Many organizations still rely on spreadsheets and manual processes, which are prone to errors and inefficiencies.

Zuno Carbon offers a comprehensive solution to these challenges. Our advanced end-to-end ESG software centralizes data collection and provides accurate, granular measurement and reporting capabilities for Scope 1, 2, and 3 emissions. By using our services, companies can streamline their data management processes, ensuring accurate and timely reporting while focusing on strategic sustainability initiatives.

Let’s have a look at current regulations in Singapore

In Singapore, reporting Scope 1, 2, and 3 emissions is becoming increasingly important as regulatory frameworks evolve. The Singapore government has introduced various initiatives and regulations to encourage businesses to reduce their carbon footprint. Companies are required to monitor and report their emissions to comply with local environmental regulations and contribute to the country's sustainability goals.

Singapore's regulatory landscape

The Carbon Pricing Act (CPA), introduced in 2019, is a cornerstone of Singapore’s regulatory efforts. This act mandates that facilities producing 25,000 tons or more of GHG emissions annually must report their emissions and pay a carbon tax. This regulation covers Scope 1 emissions directly, and indirectly influences Scope 2 and Scope 3 emissions through heightened scrutiny and corporate responsibility.

Additionally, Singapore has implemented mandatory climate-related reporting for listed and large non-listed companies. The required disclosures should be aligned with the IFRS’ International Sustainability Standards Board (ISSB) and will be implemented in a phased approach. From 2025 all listed companies will need to begin reporting, and from 2027, large non-listed companies will be required to report. Initially, these companies will only be required to report on Scope 1 and 2 emissions, with Scope 3 reporting being introduced at a later date. These new reporting requirements will help increase transparency and accountability, and strengthen the sustainability efforts of companies in Singapore.

Challenges and solutions

Compliance with these regulations is critical not only to avoid penalties but also to protect a company’s reputation. Non-compliance can result in significant financial penalties and damage to a company's brand, especially as stakeholders increasingly prioritize environmental responsibility.

One of the major challenges companies face is the accurate measurement and reporting of emissions, particularly Scope 3 emissions, which involve complex supply chain data. Many organizations struggle with data collection and integration, as the necessary information is often dispersed across various departments and external partners.

Zuno Carbon’s advanced software solution offers a comprehensive approach to managing these challenges. Our platform centralizes data collection, allowing businesses to accurately measure, track, and report their Scope 1, 2, and 3 emissions. By using Zuno Carbon’s end-to-end ESG solution, companies can ensure compliance with Singapore’s stringent regulations and contribute to the country’s sustainability goals effectively.

Conclusion

Understanding and managing Scope 1, 2, and 3 carbon emissions is essential for ESG managers and sustainability consultants. By measuring and reporting these emissions accurately, companies can identify areas for improvement, mitigate risks, and enhance their sustainability performance. Despite the challenges, ESG tracking and reporting platforms, like Zuno Carbon, can simplify the process, enabling businesses to focus on strategic sustainability goals.

Accurate measurement and reporting are critical for achieving sustainability objectives and complying with regulatory requirements. Zuno Carbon offers innovative solutions that streamline data collection, provide comprehensive analysis, and ensure precise reporting of Scope 1, 2, and 3 emissions. Our platform helps businesses not only meet regulatory standards but also drive meaningful environmental impact through informed decision-making.

For more information on how Zuno Carbon can help your organization effectively manage and report its carbon emissions book a call with our experts today. Take the next step towards a sustainable future with Zuno Carbon’s cutting-edge ESG solution.

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Frequently Asked Questions (FAQs)

What are Scope 1, Scope 2, and Scope 3 carbon emissions?

Scope 1 emissions are direct emissions from owned or controlled sources. Scope 2 emissions are indirect emissions from the generation of purchased steam, electricity, heat and cooling. Scope 3 emissions are all other indirect emissions that occur in a company's value chain, including both upstream and downstream activities.

Is it mandatory to report Scope 1, 2, and 3 emissions in Singapore?

From 2025 all listed companies in Singapore are required to undertake climate related disclosures, aligned with the ISSB. Large, non-listed companies will be required to report from fiscal year 2027. To begin with companies will be required to report on Scope 1 and Scope 2 emissions, with Scope 3 emission reporting being phased in at a later date.

How to calculate Scope 1, 2, and 3 emissions?

Calculating Scope 1 emissions involves measuring direct emissions from sources such as company-owned vehicles and facilities. Scope 2 emissions are calculated based on the consumption of purchased electricity, steam, heat, or cooling. Scope 3 emissions require a comprehensive assessment of the entire value chain, including upstream and downstream activities. This involves gathering data from suppliers, partners, and other stakeholders.

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