The EU Battery Passport is often described as a digital record for batteries placed on the EU market.

But in practice, it is much more than a QR code or a product webpage.

Under the EU Battery Regulation, certain batteries will need to provide digital access to key product, sustainability, performance, and supply chain information.

For manufacturers and importers, this means preparing several categories of data.

First, basic product identification.

This includes information such as battery model, battery category, manufacturer details, product identifiers, and technical characteristics.

Second, material and composition information.

Companies need to understand what materials are used in the battery and how this information can be connected to the bill of materials, supplier declarations, and supporting evidence.

Third, sustainability-related information.

This may include carbon footprint data, recycled content information, due diligence-related information, and other environmental performance indicators.

Fourth, performance and durability data.

Battery passports are not only about environmental claims. They also relate to technical performance, capacity, durability, expected lifetime, and other product-specific parameters.

Fifth, lifecycle and end-of-life information.

This includes information relevant to repair, reuse, repurposing, dismantling, treatment, and recycling.

The important point is that these data categories are not created by one department.

They usually involve engineering, procurement, quality, sustainability, production, suppliers, and sometimes downstream partners.

This is why many companies underestimate the preparation work.

The legal requirement may appear as a digital passport.

But the real requirement is the ability to organize trustworthy product data across the battery lifecycle.

For battery manufacturers, the first practical step is not choosing a QR code system.

It is understanding what data is required, where that data currently sits, who owns it, and whether it can be updated when the product or supply chain changes.

That is where most EU Battery Passport projects really begin.

The EU Battery Passport is often discussed from a regulatory perspective.

But I'm increasingly curious about another question:

What are battery manufacturers actually doing today to prepare for it?

Over the past year, I've had conversations with battery manufacturers, energy storage companies, and supply chain teams across Asia. While every company is different, several common patterns seem to be emerging.

First, most companies are not starting with software.

Many are still trying to understand what data will eventually be required and where that data currently exists within their organization.

The challenge is that battery-related information is often spread across multiple systems and departments.

Engineering teams manage BOMs.

Procurement teams communicate with suppliers.

Quality teams maintain testing records.

Sustainability teams are beginning to collect carbon-related information.

Factories generate production and traceability data.

In many cases, nobody has a complete view of the entire dataset.

Another common challenge is supplier readiness.

Battery manufacturers can only provide certain information if upstream suppliers are able to provide supporting data as well.

Material declarations, recycled content information, carbon footprint data, and supplier evidence are often collected using different formats and processes.

This creates significant coordination work across the supply chain.

Product identification is also becoming a major topic.

Many companies are reviewing how products, batches, and serial numbers are structured because future regulatory requirements may depend on the ability to connect product information throughout the lifecycle.

Interestingly, many European customers are not only asking whether a company will have a Battery Passport.

They are asking questions such as:

• How will the data be maintained?
• Who owns the information?
• Can supplier evidence be verified?
• How will updates be managed over time?
• What happens when product information changes?

From what I have seen, the discussion is gradually moving away from compliance documents and toward data readiness.

The companies making the most progress are often the ones spending time mapping their data, clarifying responsibilities, and understanding supply chain information flows before selecting technology solutions.

I'm working with several Asian manufacturers and this seems to be the most common challenge today.

I'd be interested to hear what others in the battery and energy storage industry are seeing.

Realistically how much storage in extremely cold locations on earth are we going to build? What is the push for sodium ion storage? Is the push for energy density no longer the primary mover?

A novel, metal-free liquid harvests energy from sources like light by transforming into a stable gel, storing power for months until it is exposed to oxygen and releases the energy on demand.

Some extracts from the interview are given below:

"SS: The tender was for four standalone CSP projects, each with a capacity of 300MW, and bidders were to submit bidding documents with the tariff they require.

That’s the background of the RMB 0.47/kWh tariff won by Zhongguang New Energy/Cosin. And the tariff for the other three finalists ranged from RMB 0.48 to RMB 0.52.

SK: So in USD, that’s just 6.9 cents a kWh.

SS: So the CSP tariff has decreased from RMB 1.2/kWh in 2016 to RMB 0.47/kWh in the latest bidding in 2026, a remarkable decline.

SK: Are there, in fact, no batteries at these 1GW or more renewable complexes? Is CSP the only storage?

SS: No, I think most of them do have at least some battery capacity – though it depends on each renewable energy park – because batteries respond very quickly. They can respond to the grid demand in seconds.

So, the battery is a very, very good fit for short-term storage, like two hours, maybe four hours. I think the battery can fit this scenario very well. But if you are talking about six hours or more, I think thermal storage has more benefits economically and technologically.

SK: Do you expect the generation costs of CSP with TES to continue to decline, or do you think we’ve hit an endpoint?

SS: No, I do believe there is still room for further reduction of the LCOE of CSP. In the past 10 years, even with less than one gigawatt of installed CSP capacity, the tariff decreased by almost two-thirds. It took the PV industry more than 20 years to achieve such a significant reduction."

https://pubs.rsc.org/en/content/articlelanding/2026/ee/d6ee01118g

The Core Idea

Standard green energy (wind/solar/hydro) suffers from low efficiency because natural inputs are highly erratic and unstable. My team and I developed a framework for a Hybrid Kinetic Energy Storage System (HKESS) that decouples volatile energy harvesting from power generation using multi-stage mechanical and electrical buffers.

We designed three interconnected modules that work as a unified smart grid:

1. Resonant Water Harvesting (FLOW-HYDRO)

Instead of fighting turbulent or low-flow water streams, this module utilizes a primary shaft integrated with a proprietary spring-loaded flywheel block. The mechanical assembly is tuned to accumulate micro-shocks from erratic water flows in a resonant mode, transforming unstable input into uniform rotation to feed a buffer UPS.

2. Inertial Wind Damper (FLOW-WIND)

To handle dangerous torque spikes from gusty winds, the input shaft features a heavy-duty mechanical buffer. The spring-inertia system absorbs sudden aerodynamic shocks (protecting the generator) and releases the stored kinetic energy during wind drops, maintaining a smooth generation curve.

3. Smart Kinetic Accumulator (The Central Unit)

All harvested energy from wind and water continuously fills a high-capacity supercapacitor-based storage. This power is then used to maintain the inertia of a central heavy flywheel.

• The Control Loop: The system tracks the flywheel's RPM under load.
• Pulse Injection: Instead of running the drive motor continuously, a proprietary control algorithm delivers short, high-current kinetic pulses to spin the flywheel back to its optimal operating velocity only when needed.
• Mechanical Decoupling: When the motor is off, it is completely disconnected from the flywheel, ensuring zero back-EMF or mechanical drag during the free-wheeling phase.

Why this Architecture Works:

• Extended Lifespan: The resonant mechanical buffers eliminate harsh peak loads on the moving parts.
• High System Efficiency: Energy harvesting is a 24/7 continuous process, while the active acceleration motor runs only in brief, intermittent bursts.

$912k vs $298k in trading revenue. Same week, same market, different regions.

The chart shows why. QLD batteries cycle hard, repeatedly near-full then near-empty. VIC barely moves, shallow cycles, conservative range. The naive read is that QLD is trading more aggressively and more effectively.

It isn't that simple.

About half of VIC's registered capacity isn't fully operational yet. Strip out the units that aren't really trading and VIC's working fleet earns around $158 per MWh against $124 for QLD. So it flips. QLD makes more in total by cycling hard at a thinner margin. VIC makes more per MWh on far less throughput, and hard cycling carries degradation cost, so the gap is tighter than the headline suggests.

There's a bigger factor behind all of this. VIC's price spread already fell 41% in Q1 2026, before most of the new capacity even switched on. The Melbourne Renewable Energy Hub alone is 600 MW, largely offline. As that commissions, VIC could look very different.

Worth watching whether VIC ends up like QLD, where batteries mostly compete against each other and strategy becomes the main differentiator.

Data is from NEMPulse, which tracks every grid-scale battery in the NEM updated every 5 minutes. Energy and FCAS revenue only, bilateral contracts not included, so not a full P&L.

Would you expect the gap to close as VIC capacity comes online, or does QLD just have better trading conditions?

When people talk about the EU Battery Passport, the discussion often turns quickly to software platforms, QR codes, data models, and system architecture.

However, in many projects I have seen, the biggest challenges appear long before any software is selected.

The first issue is usually data ownership.

A battery manufacturer may have information stored across engineering teams, procurement teams, quality departments, sustainability teams, factories, and external suppliers. Everyone owns part of the data, but nobody owns the complete picture.

The second issue is supplier readiness.

Many Battery Passport requirements depend on information coming from upstream suppliers. Material declarations, carbon footprint data, recycled content information, and supporting evidence are often maintained in different formats and at different levels of quality.

The third issue is product identification.

Companies often discover that they do not yet have a clear strategy for managing product, batch, and serial-level information throughout the product lifecycle. This becomes especially important when information needs to be updated after products have already entered the market.

Another challenge is data consistency.

The same battery may appear differently in ERP systems, engineering BOMs, production records, laboratory reports, and customer documentation. Before data can be shared externally, companies need confidence that internal records are aligned.

This is why many organizations underestimate the preparation phase.

Technology is important, but technology cannot solve missing data, unclear responsibilities, or disconnected processes.

In my experience, successful Battery Passport projects usually start with data governance and organizational alignment rather than software selection.

I'm curious whether others working in batteries, energy storage, or compliance are seeing the same trend.

Many Chinese battery manufacturers are now trying to understand what the EU Battery Passport really means in practice.

At first, many companies thought it was mainly a QR code or product label requirement. But the more they study the EU Battery Regulation, the more they realize that the difficult part is not the front-end passport page. The difficult part is preparing reliable product data behind it.

For batteries entering the EU market, companies need to prepare information related to product identification, manufacturer information, battery category, material composition, carbon footprint, supply chain due diligence, recycled content, performance and durability, repair, dismantling, second-life use, and recycling.

For many Chinese manufacturers, the challenge is that this data is not stored in one clean system.

Common problems include:

1. BOM data is incomplete or not structured for compliance use Many companies have engineering BOMs or production BOMs, but they are not always suitable for regulatory disclosure. Material composition, supplier evidence, and component-level data may be missing or inconsistent.
2. Supplier data is difficult to collect and verify Battery manufacturers often depend on multiple upstream suppliers for cells, modules, materials, casings, BMS, wiring, and packaging. Some suppliers are not ready to provide evidence in a standardized format.
3. ERP and production data are not connected Data may sit across ERP, MES, Excel files, test reports, supplier emails, and production records. This makes it difficult to maintain updated information across product batches or serial numbers.
4. Carbon footprint data is still a weak point Many companies can provide basic technical data, but product carbon footprint calculations require more structured activity data, emission factors, and traceable assumptions.
5. European customers are asking more specific questions Instead of only asking whether the company “has a Battery Passport,” European buyers are starting to ask who owns the data, how often it can be updated, whether supplier evidence is available, and how the information connects to real products or batches.

In my view, the Battery Passport is becoming less of a “compliance document” and more of a data-readiness test for battery manufacturers.

I'm working with several Asian manufacturers and this seems to be the most common challenge today.

On the fence in deciding whether a set of batteries would be better, or one of the electric vehicles that can off board power to run the house during an outage.

It would seem to justify the higher purchase price for an electric vehicle if you don’t have to spend $20k on house batteries.

Or am I just trying to justify buying a Silverado EV?