What is a Carbon Accounting System? Explained in 5 Minutes for Businesses
In Thailand's draft Climate Change Act (expected to be enforced in 2027), MRV is designated as a crucial component of the national greenhouse gas management system.
What is a Carbon Accounting System?
A carbon accounting system is a standardized system for tracking and reporting greenhouse gas data, based on the principles of MRV (Measurement, Reporting, Verification). This involves the process of measuring, reporting, and verifying to obtain accurate and verifiable data, which is used as an important standard at national, project, and organizational levels. In Thailand's draft Climate Change Act, Article 151, it is stipulated that all sectors must have an MRV system that complies with the greenhouse gas emission reporting standards of CFO (Carbon Footprint of Organization) by the Greenhouse Gas Management Organization (TGO), and international standards such as ISO 14064, GHG Protocol.
Currently, many organizations are starting to use greenhouse gas management platforms and CFO (Carbon Footprint of Organization) Platforms to systematically calculate and track sustainability data.
How does the MRV system work?
1) M (Monitoring/Measurement): Measurement or Performance Monitoring
This involves collecting activity data and calculating greenhouse gas emissions over a period, such as:
- Electricity
- Fuel consumed by the organization
- Production processes
- Transportation
- Raw materials
- Waste
- Energy consumption in buildings
All data is converted into tCO₂e (tons of carbon dioxide equivalent) according to standards such as GHG Protocol and ISO 14064-1.
2) R (Reporting): Reporting
This involves compiling the measured data into a "Greenhouse Gas Report" (GHG Report) according to specified formats (e.g., CFO or T-VER forms).
For example:
- CFO (Carbon Footprint of Organization)
- Scope 1–2–3 reports
- Reports for IFRS S2 / ESG / Sustainability Report
- Reports submitted to customers or banks for green loans
Reporting with MRV ensures that the figures are truly traceable and comprehensive.
3) V (Verification): Verification
Verification Bodies (VVBs) will check whether:
- The data is accurate and complete
- The calculation formulas are correct
- The Emission Factors come from reliable sources
- There is supporting evidence for all figures
The result is a report that meets international standards and can be used for carbon reduction, finance, and trade.
MRV with Excel vs. Software: Which is more cost-effective?
| Issue | Excel | Software |
|---|---|---|
| 1. Ease of Use | Employees are often familiar with Excel sheets, but in practice, there are limitations such as consolidating files from multiple departments, maintaining sheet integrity, and manually linking calculation formulas. | Requires 1 day of training and supports automatic data connection (electricity, water, accounting). Has a workflow for task distribution and a notification system for departments that haven't submitted data. |
| 2. Cost-effectiveness | No investment budget required, but there are hidden costs such as training new employees, consulting fees, time loss, which are fixed costs every year. | Requires investment, but is more cost-effective in the long run, reducing personnel costs. |
| 3. Data Accuracy | High risk of errors because EF, calculation formulas, and new announcements must be updated manually. If data is not updated according to the latest standards, reports may be inaccurate and fail verification. | The system is always up-to-date, reducing the risk of errors and ready for verification. |
| 4. Continuity | High chance of data loss when employees leave, files are lost, data disappears, new employees cannot continue work, and traceability is lost. | Clear workflow, no data loss, historical data can be traced. New users can continue work immediately without starting from scratch. |
| 5. Utility | Suitable for annual reporting. Difficult to analyze data further. | Access real-time data, analyze hotspot emissions, identify carbon reduction opportunities, and immediately leverage data for further use. |
Carbonwize is designed to cover all 3 parts of the MRV system from start to finish in one place.
✔ Measurement
- Pull data from ERP, electricity, water, Fleet, IoT, or upload files
- Automated carbon calculation with a database of over 50,000 Emission Factors
- Real-time carbon data display for analysis via Dashboard
- Consolidate carbon data for branches, subsidiaries, and supply chains in a consistent format
✔ Reporting
- Generate reports instantly according to TGO CFO, ISO 14064-1, GHG Protocol standards
- Audit trail system available for historical data review and version control
✔ Verification
- Verifiers can log in to verify through the system
- Functions to support verification, system recommends if data is incomplete before submission for verification
- Upon completion of verification, certificates can be downloaded from the system
Ready to build your organization's MRV system?
If your organization wants to start calculating its carbon footprint or use a carbon footprint management system that is MRV-ready, contact Carbonwize to begin your journey towards sustainability immediately.
Let Carbonwize's team of experts help you start with confidence, from data collection to verified reporting.
📧 Interested in using the Carbonwize platform: Contact Us
About Carbonwize
Carbonwize is a comprehensive carbon management platform that helps businesses track, measure, and plan greenhouse gas emission reductions systematically, from calculating Scope 1–3 to creating carbon reduction plans aligned with Net Zero goals in your industry.
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