Short answer
The battery carbon-footprint declaration is not a 2027 problem — it is live now. Under Article 7 of Regulation (EU) 2023/1542 it applies to EV batteries since 18 February 2025 and to rechargeable industrial batteries over 2 kWh since 18 February 2026. If you place those on the EU market without the declaration, you are already non-compliant.
The figure is a lifecycle carbon footprint, calculated site-specific and batch-level, with offsets not allowed. You cannot derive it from a datasheet — it comes from your manufacturer's lifecycle data.
Almost every conversation about the EU battery rules fixes on the 18 February 2027 passport date. That framing hides a live problem: an obligation that has already started for two of the biggest battery categories. If your business places EV batteries, or industrial batteries above 2 kWh, on the EU market, the carbon-footprint declaration was due before you read this — and part of the audience is out of compliance today without knowing it.
The dates that already passed
| Battery category | Declaration required from | Status as of 9 July 2026 |
|---|---|---|
| EV batteries | 18 February 2025 | In force — over a year ago |
| Industrial batteries > 2 kWh | 18 February 2026 | In force |
| LMT batteries | Later phase (after EV / industrial) | Not yet — watch item |
| Portable / SLI | Not in this obligation | — |
So an operator placing 5 kWh storage racks or EV traction packs on the EU market has owed the declaration for months. That is the "you're already late" reality this page exists to flag — not to alarm, but because the honest first move is to check whether the gap applies to you before the passport turns it into a bigger one.
What the declaration actually is
Article 7 requires a carbon-footprint declaration: the total greenhouse-gas emissions generated across the battery's life cycle, expressed per functional unit (per kWh of the total energy delivered over the battery's service life), with a breakdown by lifecycle stage. Three features matter in practice:
- Site-specific. It reflects the actual manufacturing sites and processes used, not a generic industry average.
- Batch-level. It is tied to the production batch, not a one-off marketing number.
- No offsets. You cannot buy carbon credits to lower the declared figure. It states the real footprint of making the battery.
The declaration is the first rung of a ladder: after declaration come carbon-footprint performance classes, and later maximum thresholds that phase in from 2028 onward. Getting the declaration right now is what makes the later steps manageable.
Why you probably cannot produce it yourself
If you import or integrate batteries, the carbon-footprint figure depends on lifecycle data about how and where the cells were made — data you do not hold. This is the single most common gap, and it is a long-lead-time one, because a compliant declaration needs real LCA input from the manufacturer, not a number they invent to satisfy you. That is why the practical action is to send a structured data request to your cell or pack supplier now, asking specifically for a carbon-footprint declaration per kWh with the lifecycle-stage breakdown, calculated to the EU methodology.
How it connects to the 2027 passport
The carbon-footprint declaration is a standalone obligation under Article 7, earlier than the passport. But it also becomes part of the passport's sustainability category from 18 February 2027 (Article 77). So a missing declaration is not just a current compliance gap — it is a hole that carries straight into the passport. Fixing it now solves two problems at once.
This guide is general information about Regulation (EU) 2023/1542, not legal advice, and we do not calculate carbon footprints or verify supplier data. Whether the declaration applies to your specific products, and exactly how to prepare it, should be confirmed with qualified counsel and your LCA provider.
Frequently asked questions
Is the carbon-footprint rule already in force?
Yes. Under Article 7, the declaration applies to EV batteries from 18 February 2025 and to industrial batteries over 2 kWh from 18 February 2026. Placing those without the declaration means you are already non-compliant.
Can I use offsets to meet it?
No. The declaration is a lifecycle carbon-footprint figure calculated site-specific and batch-level. Offsets are not allowed to reduce the declared figure.
Do I calculate the carbon footprint myself?
It is based on lifecycle data for how the battery was made, so if you import you need it from your manufacturer — you cannot derive it from a spec sheet.
How does this relate to the 2027 passport?
The declaration is a separate, earlier obligation under Article 7, and it also feeds the sustainability category of the passport that applies from 18 February 2027. A missing declaration now carries into the passport.
Check whether you already owe a declaration
Screen your batteries against Regulation (EU) 2023/1542. The report flags obligations already in force — including the carbon-footprint declaration — and gives you the supplier data-request letters to close the gap.
Check my batteries → get my battery passport reportSources
- Regulation (EU) 2023/1542, Article 7 — carbon-footprint declaration; EV batteries from 18 February 2025, rechargeable industrial batteries > 2 kWh from 18 February 2026; lifecycle basis, site-specific, offsets not allowed. eur-lex.europa.eu/eli/reg/2023/1542/oj
- Regulation (EU) 2023/1542, Article 77 — the battery passport (from 18 February 2027) into which the carbon-footprint declaration feeds. eur-lex.europa.eu/eli/reg/2023/1542/oj
Honesty note, as of 9 July 2026: the carbon-footprint declaration dates above are in force under Article 7. The performance-class and threshold steps that follow (from 2028) and the passport's data model (delegated act due 18 August 2026) are still landing.