Bottom-up inventories often contain poor source category mapping, inconsistent and outdated methodologies, and brittle assumptions that create problems when GHG emissions are scrutinized.
Highwood’s Bottom-Up Inventory (BUI) Development service strengthens and standardizes your BUI by improving data structure, emission factors, and calculation approaches, so it is consistent, credible, and ready to integrate into measurement-informed workflows.
Benefits
Improve the credibility and auditability of your inventory, comply with reporting frameworks and identify mitigation opportunities.
Use cases
Your current BUI is based on outdated assumptions related to activity and emissions data
Your current BUI lacks coherent mapping to individual sites and assets
Your BUI needs to be standardized for participation in measurement-informed reporting frameworks
You need a quality assurance program to ensure your inventory is updated on a consistent basis
Inputs
Current source-level quantification methods and data sources
Existing tools/templates/systems used to manage the BUI
Asset/site structure and categories relevant to inventory development
Any internal standards/governance expectations for reporting
Outputs
Review of existing BUI methods and data, with recommended improvements
Recommendations for data structure, emission factors, and calculation approaches
Support integrating existing tools/templates/systems into an improved BUI design
Technical guidance to align with industry reporting frameworks
Clarified approach for integration into measurement-informed workflows
Optional ongoing primary support in reporting
Estimated timeline
4–8+ weeks, depending on asset complexity, existing inventory maturity, and data quality.
Next step
Speak to a Methane Advisor to review your current BUI development process and define the improvement scope.