Understanding a battery's environmental impact requires information from across its lifecycle, including raw material extraction, component production, manufacturing, transport, use and end-of-life treatment. Much of this information is assessed through Life Cycle Assessment (LCA), which helps organisations calculate and evaluate environmental impacts.
A Digital Battery Passport (DBP) provides a structured way to make relevant battery information accessible to users with appropriate access rights. Connecting LCA systems with the Battery Passport can help manufacturers communicate environmental information while maintaining a clear link to the data and methods behind it.
In our previous article, How MES Data Can Feed A Digital Battery Passport, we explored how manufacturing execution data can support battery traceability. This article focuses on another important source of product information: environmental data generated through LCA and carbon footprint assessments.
What Is LCA, And How Does It Relate to the Battery Passport?
Life Cycle Assessment is a method for evaluating the potential environmental impacts of a product throughout its lifecycle. It considers resource consumption, emissions and other environmental pressures associated with activities from raw material extraction to end-of-life treatment.
Carbon footprint assessment focuses on greenhouse gas emissions, commonly expressed as carbon dioxide equivalent (CO₂e). LCA can cover a broader range of impacts, including water use, resource depletion and effects on ecosystems.
The European Commission's Product Environmental Footprint (PEF) method builds on LCA and provides a framework for assessing and communicating the environmental performance of products.
For batteries, these assessments can help explain the environmental impacts associated with the materials, energy and processes involved in production and other lifecycle stages.
The Battery Passport provides a way to communicate specified environmental information alongside other technical and lifecycle data. Under Regulation (EU) 2023/1542, carbon footprint information is included among the publicly accessible information relating to the battery model, subject to the applicable requirements.
What Environmental Data Can Feed a Digital Battery Passport?
The information that can be transferred depends on the battery category, applicable regulatory requirements and the scope of the underlying environmental assessment.
Relevant information may include:
Environmental Data | Potential Relevance to the Battery Passport |
Carbon footprint | Communicates the battery's assessed greenhouse gas emissions |
Assessment scope | Clarifies which lifecycle stages and processes are covered |
Functional unit or reference basis | Explains the basis on which results are calculated |
Energy consumption | Supports analysis of manufacturing-related environmental impacts |
Material and supply chain data | Provides inputs for assessing upstream impacts |
Recycled material content | Supports relevant circularity and material information |
Assessment methodology | Explains the rules and assumptions used to calculate results |
Verification status | Helps users understand whether the assessment has undergone the required checks |
These are examples of information that may support environmental reporting and data governance. They should not be treated as a list of mandatory Battery Passport fields. The applicable legal requirements determine which information must be included and how it must be calculated or reported.
Understand the Regulatory Requirements Before Integrating Data
Article 7 of the EU Batteries Regulation establishes carbon footprint requirements for specified battery categories, including requirements for carbon footprint declarations and, where applicable, performance classes and maximum lifecycle carbon footprint thresholds. The precise requirements and application dates differ by battery category and depend on the relevant regulatory provisions and delegated acts.
Article 77 and Annex XIII connect the Battery Passport with specified battery information, including carbon footprint information required under Article 7.
For sustainability and compliance teams, the practical task is to map these requirements against existing LCA outputs. Teams need to establish which result is required, what methodology applies, what evidence must be retained and whether the assessment meets the relevant reporting conditions.
A general corporate carbon inventory or an LCA prepared for a different purpose may not automatically satisfy a specific battery requirement. The scope, calculation rules, reporting format and verification requirements need to be checked before results are transferred.
Connect LCA Results with the Correct Battery Model
Environmental assessments often cover a product model, production process or defined product system rather than every individual battery.
This distinction matters when connecting LCA data with a Battery Passport. The environmental result must be associated with the correct battery model and the relevant production configuration.
For example, two battery models may use different chemistries, suppliers or manufacturing processes. Even if they are produced at the same facility, their environmental results may differ.
A reliable integration process should therefore establish a clear relationship between the LCA study, its product scope and the corresponding Battery Passport information.
A simplified data flow could look like this:
LCA Study → Assessment Result → Product Model → Validation and Approval → Battery Passport
Where an assessment relies on several data sources, teams should also preserve the connection between the final result and the underlying inventory data, emission factors, assumptions and calculation methods.
Preserve Methodology, Scope and Evidence
A carbon footprint figure has limited value if users cannot understand what it represents.
For example, a result may cover selected lifecycle stages rather than the entire lifecycle. It may also rely on specific assumptions about electricity, material sourcing, transport or recycling. Comparing results without understanding these differences can lead to misleading conclusions.
When transferring environmental information into a Battery Passport, organisations should preserve relevant supporting context, including:
- the assessment's scope and reference basis;
- the methodology and applicable calculation rules;
- the source and quality of important input data;
- the assessment date and relevant version;
- the verification or approval status, where applicable.
This does not mean that every supporting calculation must be published in the Passport. Sensitive or detailed records can remain in their source systems, provided the organisation can maintain appropriate evidence and access controls.
A clear record of where data originated and how it was processed also supports Battery Passport Data Provenance.
Integrate LCA Systems with Existing Business Data
LCA tools often depend on information held across multiple systems. ERP platforms may provide purchasing and supplier records, MES platforms may hold manufacturing data, and energy management systems may record electricity consumption. Sustainability teams may combine these inputs with external datasets and emission factors to calculate environmental impacts.
Connecting these systems to the Battery Passport requires a coordinated data architecture.
Rather than transferring information manually each time a report is produced, organisations can map required Passport fields to their source systems and define how results are updated, reviewed and approved.
The integration process should also distinguish between measured data, supplier-provided information, secondary datasets and calculated results. This helps teams understand data quality and identify where additional evidence is needed.
Our guide on How To Map Existing Business Data To Battery Passport Requirements explains how to connect existing records with relevant Passport requirements.
Keep Environmental Information Accurate and Up to Date
LCA results can change when manufacturers update their processes, switch suppliers, use different energy sources or revise assessment methods. New data may also improve the accuracy of earlier calculations.
Organisations therefore need a controlled process for reviewing environmental information and determining when an updated result should be reflected in the Battery Passport.
Where an assessment is revised, the organisation should preserve the relevant history and record why the result changed. This helps maintain consistency between the published Passport information and the supporting environmental assessment.
How BASE Supports Connected Environmental Data
The BASE project is developing a trusted and interoperable Digital Battery Passport framework to support transparency, traceability, data authenticity and circularity across the battery value chain. Connecting LCA results with other product and manufacturing records fits this approach by helping link environmental information to its source, maintain its integrity and make relevant data available through an interoperable Passport architecture. This supports a more reliable foundation for communicating battery environmental performance and informing lifecycle decisions.
Turn LCA Results into Trustworthy Battery Passport Information
Connecting LCA systems with a Digital Battery Passport requires sustainability, LCA, IT and compliance teams to work together. The process begins by identifying the applicable requirements, mapping environmental results to the correct battery model and preserving the methodology and evidence behind each reported value.
When these elements are managed consistently, the Battery Passport can communicate relevant environmental information while retaining the context needed to interpret and verify it.
For manufacturers preparing for EU Battery Passport requirements, integrating LCA data into the wider product information architecture can help establish a more transparent and reliable approach to battery environmental reporting.
The BASE project has received funding from the Horizon Europe Framework Programme (HORIZON) Research and Innovation Actions under grant agreement No. 101157200.
References & Resources
European Union - Regulation (EU) 2023/1542 Concerning Batteries and Waste Batteries: https://eur-lex.europa.eu/eli/reg/2023/1542/oj
European Commission - Life Cycle Assessment and the Environmental Footprint Methods: https://green-forum.ec.europa.eu/green-business/environmental-footprint-methods/lca-ef-methods_en
European Commission - Product Environmental Footprint Method: https://green-forum.ec.europa.eu/green-business/environmental-footprint-methods/pef-method_en
European Commission - Recommendation on the Use Of Environmental Footprint Methods: https://environment.ec.europa.eu/publications/recommendation-use-environmental-footprint-methods_en
BASE Project - Battery Passport Data Lineage: From Source System to Published Passport: https://www.base-batterypassport.com/blog/traceability-9/battery-passport-data-lineage-138
BASE Project - How to Validate Battery Passport Data Before Publication: A Practical Data Quality Guide: https://base-batterypassport.com/blog/blog-3/how-to-validate-battery-passport-data-before-135