IN SUMMARY
The EU Battery Regulation, in force since February 2024, is a major step toward regulating the environmental impact of battery production and supply chains, and it designates life cycle assessment as the primary method for calculating a battery's carbon footprint. For anyone producing, importing or distributing batteries, this brings new obligations: mandatory carbon footprint declarations, calculated via LCA and recorded in a digital battery passport. This guide explains how the LCA methodology works under the regulation, what data is required, and how to prepare, while noting that the Delegated Act governing the detail is still evolving.
Carbon footprint declarations are now mandatory. They apply to batteries for electromobility (EVs and light means of transport like e-bikes) and industrial energy storage over 2 kWh, covering lithium-ion and emerging chemistries like sodium-ion and solid-state.
LCA is the designated method. Footprints must follow the EU's Product Environmental Footprint method (based on ISO 14040/44 and 14067), using Environmental Footprint 3.1, and be recorded in a battery passport.
The regulation enables thresholds and penalties. By making batteries comparable, it allows carbon footprint performance classes and thresholds, which could eventually restrict or penalise high-footprint batteries in the EU market.
What the regulation requires, and who it affects
If you produce, import or distribute batteries, the EU Battery Regulation directly affects your operations. It mandates carbon footprint declarations for batteries used in electromobility (electric vehicles and light means of transport such as e-bikes and e-scooters) and for industrial energy storage over 2 kWh, spanning lithium-ion and emerging chemistries like sodium-ion and solid-state. Each declaration must be calculated using LCA and included in a digital product passport, the battery passport. Europe's approach is becoming a model that other jurisdictions are likely to follow, which is why the guide focuses on universally applicable principles rather than EU-only detail. An important caveat runs throughout: the Delegated Act governing the precise LCA and electricity-modelling rules was still under review, so some specifics remain subject to forthcoming secondary legislation.
How the LCA methodology works under the regulation
Battery footprints must follow the European Commission's Product Environmental Footprint method and the relevant category rules, both built on ISO 14040/44 and 14067, using the Environmental Footprint 3.1 methodology. Four aspects matter for compliance. The system boundary defines what is included; the regulation follows a cradle-to-grave or cradle-to-cradle approach but excludes the use phase, because the way a battery is driven or charged varies so widely it would introduce uncertainty that undermines comparability. Data feeds the model and comes in primary and secondary forms. Results include the absolute footprint, the footprint per life cycle stage, the functional unit (for batteries, 1 kWh of total energy provided over service life), and a critical review under ISO 14071. Interpretation, the most important phase, covers hotspot analysis, sensitivity and uncertainty analysis, eco-design support and decarbonisation strategies.