Cost Accounting: Sustainability - Carbon Accounting, Direct vs Indirect Emissions, Carbon Footprint

? What this actually is

Carbon accounting is the process of measuring and reporting the greenhouse gas (GHG) emissions produced by an organization. It involves categorizing emissions into direct and indirect types and calculating the overall carbon footprint. This matters because it helps organizations understand their environmental impact, comply with regulations, and make informed decisions about sustainability initiatives. The core idea is to quantify emissions using standardized protocols like the Greenhouse Gas Protocol.

? The core logic (or formula)

1. Direct Emissions (Scope 1): Emissions from sources owned or controlled by the organization (e.g., company vehicles, boilers).
2. Indirect Emissions (Scope 2): Emissions from the generation of purchased electricity, heat, or steam consumed by the organization.
3. Other Indirect Emissions (Scope 3): All other indirect emissions (e.g., business travel, waste disposal, supply chain).
4. Carbon Footprint Calculation:
5. Total Emissions = Scope 1 Emissions + Scope 2 Emissions + Scope 3 Emissions
6. Emission Factors: Standard values used to convert activity data into emissions (e.g., kg CO2 per kWh of electricity).

? Hidden rule nobody explains

In practice, Scope 3 emissions are often the most challenging to quantify due to the complexity of supply chains and the lack of direct control over these sources. Many organizations start by focusing on Scope 1 and Scope 2 emissions, which are more straightforward to measure and manage.

? Practical example / breakdown

Let's calculate the carbon footprint for a small manufacturing company:

1. Scope 1 Emissions:
2. Company vehicles: 50,000 miles driven * 0.4 kg CO2/mile = 20,000 kg CO2
3. Boilers: 10,000 kWh * 0.2 kg CO2/kWh = 2,000 kg CO2

4. Total Scope 1: 22,000 kg CO2

5. Scope 2 Emissions:

6. Purchased electricity: 50,000 kWh * 0.5 kg CO2/kWh = 25,000 kg CO2

7. Total Scope 2: 25,000 kg CO2

8. Scope 3 Emissions:

9. Business travel: 100,000 miles flown * 0.1 kg CO2/mile = 10,000 kg CO2
10. Waste disposal: 50 tons * 2 kg CO2/ton = 100 kg CO2

11. Total Scope 3: 10,100 kg CO2

12. Total Carbon Footprint:

13. Total Emissions = 22,000 kg CO2 (Scope 1) + 25,000 kg CO2 (Scope 2) + 10,100 kg CO2 (Scope 3) = 57,100 kg CO2

? Your move today

Goal: Calculate the carbon footprint for a hypothetical small business.

Step-by-step:
1. Identify the sources of Scope 1 emissions (e.g., company vehicles, boilers).
2. Calculate Scope 1 emissions using appropriate emission factors.
3. Identify the sources of Scope 2 emissions (e.g., purchased electricity).
4. Calculate Scope 2 emissions using appropriate emission factors.
5. Identify the sources of Scope 3 emissions (e.g., business travel, waste disposal).
6. Calculate Scope 3 emissions using appropriate emission factors.
7. Sum up all emissions to get the total carbon footprint.

What to save: A completed carbon footprint calculation for a hypothetical small business.

? Quick reference asset

Carbon Footprint Calculation Template

Common mistakes & recovery

• Common Error 1: Overlooking Scope 3 emissions due to their complexity.
• Recovery: Start with the most significant Scope 3 sources and use available data to estimate emissions.
• Common Error 2: Using outdated or incorrect emission factors.
• Recovery: Ensure emission factors are up-to-date and from reliable sources.
• Quick Check: Verify that all major emission sources are included and that the emission factors are current.
• Exam Tip: Focus on understanding the distinctions between Scope 1, 2, and 3 emissions and how to calculate each.

? Completion check

I can calculate the carbon footprint for a small business by categorizing emissions into Scope 1, Scope 2, and Scope 3, and applying appropriate emission factors.