Reconciliation of Methane Emissions
Accurate methane reporting requires more than measurements alone. Reconciliation is the process that connects bottom-up inventories with real-world measurements, enabling operators to identify gaps, improve accuracy, and meet the highest standards of emissions reporting.
Within the OGMP framework, reconciliation is a critical step toward Level 4 and Level 5 reporting, ensuring that emissions data reflects actual site performance.
What is Emissions Reconciliation?
Emissions reconciliation is the systematic comparison and alignment of different data sources, including:
- Bottom-up inventories (component-level and engineering estimates)
- LDAR measurements (source-level detection and quantification)
- Site-level measurements (top-down emissions data)
By combining these datasets, reconciliation helps to:
- Identify discrepancies between reported and measured emissions
- Detect underestimated or missing sources
- Improve the completeness and accuracy of emissions inventories
Why Reconciliation Matters
As regulatory and voluntary frameworks evolve, companies face increasing pressure to demonstrate accuracy and transparency.
Reconciliation enables you to:
- Move beyond generic emission factors
- Build confidence in reported emissions
- Support compliance with OGMP requirements
- Prioritize mitigation based on real emissions data
- Prepare for independent verification and audits
Without reconciliation, even high-quality measurements remain isolated data points rather than a coherent emissions picture.
Our Approach to Reconciliation
We apply a structured, data-driven methodology to ensure robust and defensible results:
1. Data Integration
We combine multiple data streams, including:
- Component-level inventories
- LDAR measurement results
- Site-level measurement campaigns
2. Data Quality Assessment
We evaluate:
- Measurement uncertainty
- Data completeness
- Representativeness of datasets
3. Gap Analysis
We identify:
- Missing sources
- Underestimated emission factors
- Systematic deviations between datasets
4. Alignment & Adjustment
We support:
- Updating inventories based on measurement data
- Aligning bottom-up and top-down results
Documenting assumptions and methodologies
Why Work With Us
We turn complex emissions data into clear, actionable insights. By combining measurement and advisory expertise, we deliver reliable, audit-ready results that help you meet OGMP requirements and confidently move toward Level 5 reporting.
How Measurements Feed Reconciliation
Reconciliation relies on high-quality measurement inputs:
- LDAR programs provide detailed, source-level insights and emission factors
- Site-level measurements deliver independent, top-down validation of total emissions
Together, these approaches create a complete and balanced emissions dataset, forming the foundation for reliable reconciliation.
How else we can help you
From Reconciliation to OGMP Level 5
Reconciliation is a key enabler for achieving OGMP Level 5, where emissions are based on measured and verified data.
A robust reconciliation process allows you to:
- Demonstrate alignment between measured and reported emissions
- Reduce uncertainty in your inventory
- Build a transparent, auditable emissions framework
Looking for Advanced Support?
For complex assets and portfolios, reconciliation requires advanced methodologies, statistical analysis, and deep domain expertise.
Our Advisory team supports:
- Advanced reconciliation strategies
- Uncertainty quantification
- Development of Level 5 inventories
- Audit-ready documentation
Let’s Build a Defensible Emissions Inventory
Whether you are starting your OGMP journey or aiming for Level 5, reconciliation is essential to ensure your data stands up to scrutiny.