EPD and Carbon Footprint Implementation Roadmap: From the Four-Layer Framework to a Manufacturer's Action Checklist

TL;DR — Continuing from the previous article (LCA is a compliance system, not a science), this piece addresses the practical side. CBAM entered its definitive phase on January 1, 2026; manufacturers without credible carbon footprint data will be assigned higher default values, effectively penalizing those who have not completed an LCA. Going from zero to a first published EPD takes roughly 8–18 months and NTD 500,000–5,000,000, progressing through the four-layer framework (methodology / rules / data / certification), with PCR selection taking priority over database selection. 2026 is the last reasonable launch window for Taiwan’s manufacturing sector.

The previous article mapped the full landscape of this industry — the four-layer system of methodology, rules, data, and certification stacked on top of one another, and the historical forces that carried it from 1969 to today. But for a company just entering this space, the real questions are not “what does this industry look like?” They are two far more immediate questions:

1. Why is every company being pushed into this right now?
2. Where are we today? What should we do next?

This article answers both. The first half traces the historical evolution of compliance pressure and explains why EPD and carbon footprint certification shifted from “voluntary CSR” to “mandatory trade requirement” in the 2020s. The second half translates the four-layer framework into an actionable roadmap.

Why Waiting Past 2026 May Be a Point of No Return: Fifty Years of Accumulating Compliance Pressure

Three Waves of Transition — from “Voluntary Disclosure” to “Mandatory Verification”

When LCA tools emerged in the 1990s, they were used primarily for internal corporate analysis and marketing communications. Over the past three decades, however, the compliance pressure surrounding LCA has gone through three distinct waves.

First Wave (1990–2010): The Voluntary Framework Era

• Primary drivers: rising consumer awareness, ISO standardization, pioneering EPD programs in the Nordic countries
• Corporate motivation: brand differentiation, self-governance, CSR reporting
• Compliance pressure intensity: low, driven mainly by peer pressure

Second Wave (2010–2020): The Quasi-Mandatory Era

• Primary drivers: Kyoto Protocol-derived policies, EU Integrated Product Policy, the Paris Agreement
• Corporate motivation: public procurement requirements, major-client supply chain demands, green building certification needs
• Compliance pressure intensity: moderate — specific regulations began requiring LCA results, but enforcement was loose

Third Wave (2020–present): The Mandatory Regulatory Era

• Primary drivers: EU Green Deal, CBAM, the Battery Regulation, ESPR, CSRD
• Corporate motivation: market access, avoiding tariffs, avoiding penalties
• Compliance pressure intensity: high, with genuine trade-blocking force

We are currently in the middle of the third wave. The years 2023–2026 represent the critical window during which this system is making the leap from “quasi-mandatory” to “truly mandatory.” Any company that fails to enter during these years may find itself forced into a rushed catch-up later.

The Concrete Pressure of Three Key Regulations

For any manufacturer seeking to export to the EU, the following three regulations directly determine the priority of EPD and carbon footprint certification.

CBAM (Carbon Border Adjustment Mechanism): Already in Effect

The EU launched the CBAM transitional period in October 2023, and January 1, 2026 marked the entry into the definitive phase. Products currently covered include steel, aluminum, cement, fertilizers, electricity, and hydrogen. The EU has since proposed expanding coverage to downstream products — chemicals, plastics, glass, textiles, and others — before 2028.

Practical implications for manufacturers:

• Exports to the EU must declare the product’s “embedded emissions”
• Emissions exceeding the EU benchmark for comparable products require the purchase of CBAM certificates (on sale from February 1, 2027, priced equivalently to EU ETS carbon prices)
• No credible data → default values apply → default values are typically significantly higher than actual figures — effectively penalizing manufacturers that have not completed an LCA

CBAM does not directly require an EPD, but it mandates product-level carbon footprint calculation — and once a company has built that capability, only a PCR and third-party verification stand between it and a full EPD.

The New Battery Regulation (EU Regulation 2023/1542): Progressively Tightening

Entered into force in 2023. From February 2025, EV batteries sold in the EU must carry a carbon footprint declaration; from February 2026, industrial batteries (>2 kWh) follow; from February 2027, all batteries must have a Battery Passport; requirements continue to tighten thereafter.

Practical implications for manufacturers:

• This is not just about battery manufacturers — it affects the entire battery supply chain, from minerals and cathode/anode materials to electrolytes and assembly plants
• Upstream and downstream parties must exchange “company-specific datasets” with a DQR ≤ 2
• Once carbon footprint performance classes are activated, low-rated products will effectively lose market access
• A “maximum carbon footprint threshold” will subsequently be introduced; products exceeding it will be banned from sale

The Battery Regulation is the first EU regulation to tie LCA results directly to market access — other sectors may follow suit.

ESPR (Ecodesign for Sustainable Products Regulation): In Force Since 2024

Entered into force in 2024. The broadest product regulation in EU history, it will require most physical goods to carry a Digital Product Passport (DPP) before 2030.

Practical implications for manufacturers:

• The DPP must include product environmental footprint information
• Textiles, furniture, construction materials, and electronics are expected to be among the first categories regulated
• This is not a one-time carbon footprint — it requires continuously updated lifecycle data

ESPR transforms LCA and EPD from “a compliance tool for specific industries” into “a universal requirement for almost all physical goods.”

Asia’s Response

EU regulations have prompted responses from major Asian economies, creating a multilayered set of pressures that manufacturers must address simultaneously.

For Asian manufacturers, “do it for the EU first, then leverage it for Asian compliance” is a pragmatic dual-track strategy — EU EPDs are generally accepted by Asian regulatory authorities, while the reverse is not always true.

Six Questions to Ask Yourself Before Launching an EPD Project

Before launching any LCA or EPD project, answer these six questions honestly. The answers will drive every decision that follows.

Q1. What is our motivation for doing this?

• Market pressure: customer requirements, tender requirements, supply chain disclosure mandates
• Regulatory requirements: EU exports, CBAM-covered products, mandatory labeling in specific countries
• Brand positioning: green marketing, ESG reporting, sustainability messaging
• Internal decarbonization: identifying emission hotspots, setting reduction targets

Different motivations require different levels of rigor. Market pressure and regulatory requirements call for “formal certification-grade” work; brand and internal purposes can start from a lighter-weight version.

Q2. Does our product have an existing PCR (Product Category Rules)?

• Existing PCR → significantly shortens preparation time; apply it directly
• No exact match but a closely related category exists → can be used as reference, but discuss with the program operator
• No match at all → may need to draft or commission one, adding 6–12 months

Q3. Which markets are we targeting for export?

Choosing the wrong system is equivalent to wasted effort — it locks in the downstream choices of database, PCR, and verifier.

Q4. What is the current state of our internal data?

• ISO 14064 organizational GHG inventory already in place → some data can be carried over
• ISO 50001 energy management system in place → energy consumption data is relatively complete
• ISO 14001 environmental management system in place → environmental aspects have a baseline
• Nothing in place → data collection must start from scratch

Q5. What is our budget and timeline tolerance?

📊 Key Figures

• First EPD, from zero to publication: 8–18 months
• Budget range: NTD 500,000–5,000,000 (database licensing, consulting fees, verification fees, and internal labor combined)
• Marginal cost from the second EPD onward: roughly 6–9 months, budget approximately halved

Q6. Will we maintain this on an ongoing basis?

EPDs are typically valid for five years. Major process changes during that period may require updates; expiry requires re-verification. This determines whether you should build internal capability or treat each cycle as an outsourced project.

A Five-Level Maturity Model: Which Level Is Your Company At?

Breaking a company’s progress in this field into five levels helps clarify where you currently stand.

Most manufacturers entering this space under market pressure find themselves between Level 0 and Level 1. Moving from Level 1 to Level 3 typically requires 12–24 months and one complete project cycle.

Working backward from compliance deadlines: If your products fall under CBAM, the Battery Regulation, or ESPR — and your compliance deadline is 2027–2028 — you should already be at least at Level 1 now (mid-2026) and launching a project toward Level 3, given that the journey from Level 1 to Level 3 takes approximately 12–18 months.

Methodology Layer: The Foundational Work of LCA Method

Why does this layer exist? This layer exists because of the methodological battles of the 1990s — when the same product could yield wildly different results depending on which consultant ran the numbers, forcing ISO TC 207 to be established in 1993 and ISO 14040 to be published in 1997. Even today, despite the ISO standard, method selection leaves substantial “discretionary space,” and you need someone internally who understands the field well enough to judge whether a consultant’s recommendations are sound.

This layer rarely causes a bottleneck, since the standards documents are publicly available and training resources are abundant. Problems tend to arise in the layers that follow — but how solidly this layer is built affects the quality of every subsequent decision.

Typical current state

• A vague awareness of LCA concepts, but no comprehensive training
• Possibly attended an external short course
• No dedicated staff; responsibility typically shared across ESG, quality assurance, or R&D teams

Recommended next steps

1. Designate a dedicated internal point of contact: 1–2 internal liaisons. Even if everything is outsourced, you need someone who understands the field well enough to engage with consultants — otherwise, you cannot evaluate what they deliver or identify errors.

2. Build foundational understanding: Read ISO 14040 and ISO 14044 (CNS 14040 is available in Chinese in Taiwan) and the General Guide chapter of the ILCD Handbook. Together these documents run to over 200 pages, but 80% of the critical concepts are contained within them.

3. Attend practical training: Prioritize case-study-based training over general overview courses. Seeing how someone actually calculates a real case is far more valuable than sitting through 50 slides on methodology theory.

Why PCR Selection Is the Most Critical Early Decision

Why does this layer exist? When Sweden established the world’s first EPD system in 1998, it became clear that “the same product category, calculated differently by different companies, produced EPDs that could not be compared.” This led to the introduction of “Product Category Rules (PCR)” — a mechanism by which the industry jointly establishes the rules of the game for each product category. This design was formally institutionalized by ISO 14025 (2006); today’s EU PEFCR operates on the same logic, pushed further.

The decisions made at this layer shape all subsequent work. Choosing the wrong PCR means the entire LCA must be redone.

Common blind spots at this layer

• Not knowing what a PCR is
• Knowing the concept but unable to find a version applicable to your product
• Finding one, but using an expired version
• Finding multiple versions and not knowing which one to use

Priority Order for PCR Searches

1. EPD International PCR database — broadest coverage, English language, globally applicable
2. Industry-specific program operators — IBU (focus on construction materials), EPD Norge (Nordic construction), PEP ecopassport (electrical and electronic equipment)
3. EU PEFCR list — European Commission website, regulatory orientation
4. Regional EPD programs — Japan’s SuMPO, South Korea’s KEITI, etc.

What to Confirm Once You Have Found a PCR

The Impact of the PEFCR Wave

The EU is systematically consolidating product-category PCRs into PEFCRs (PEF Category Rules). Implications for manufacturers:

• Short term (2024–2028): Existing PCRs and newly published PEFCRs coexist; confirm which applies to your target market
• Medium term (2028–2030): PEFCR coverage expands; EU regulatory references will increasingly point to PEFCR
• Long term (post-2030): PEFCR is expected to become the EU mainstream; existing PCRs may need realignment

If your EPD project is primarily targeting the EU market, it is advisable to first check whether a PEFCR draft or final version exists for your product category — to avoid completing a PCR-based cycle only to find it must be redone shortly afterward.

The Two Battlegrounds of the Data Layer: Foreground Data vs. Background Databases

Why does this layer exist? The construction of the data layer reflects the evolution of LCA from an “internal corporate tool” to a “cross-organizational collaborative effort.” In the early days, companies ran LCA entirely on their own factory data. From the 1990s onward, LCA needed to incorporate upstream data (raw material production) and downstream data (end-of-life disposal) — no single company could do this alone, which gave rise to centralized background databases (the four major players being ecoinvent, GaBi, IDEA, and CLCD). Today’s distributed LCDN architecture is the latest stage of that evolution.

The work of the data layer can be broken into two battlegrounds, each presenting entirely different challenges.

Battleground One: Foreground Data (Your Own Factory Data)

Typical current state

• Energy bills scattered across accounting, facilities management, and production planning departments
• Raw material procurement records not organized by batch, making it difficult to attribute them to individual products
• Waste and emissions not metered by production line
• In multi-product shared-line facilities, energy consumption cannot be precisely allocated

Recommended next steps

1. Build data collection around the “functional unit” Determine whether you are calculating for “1 kg of product,” “1 m² of panel,” “1 packaging unit,” or something else — then organize all data around that unit.

2. Build a Data Inventory Sheet Categorize by inputs and outputs:

• Inputs: electricity, fuel, water, primary raw materials, auxiliary materials, transportation
• Outputs: target product, co-products, waste, air emissions, wastewater

3. Typical data gaps

• Auxiliary materials (packaging, cleaning agents, lubricants)
• Indirect energy consumption (air conditioning, lighting, apportioned facility-wide services)
• Internal transport and distribution
• Employee commuting (not required by some PCRs, but some do require it)

4. Data representativeness period Typically the most recent complete year (12 consecutive months); you cannot cherry-pick unusually good or unusually bad months.

Battleground Two: Background Databases (Upstream Data)

Selection is constrained by budget, target market, and PCR requirements

Recommended next steps

1. For companies starting out, consider: openLCA software (free) + short-term ecoinvent license (single-project licensing is available). This combination minimizes entry-level costs.

2. Primary principles for database selection

• First principle: which databases does the verification body in your target market recognize?
• Second principle: which databases does your PCR permit?
• Third principle: can your budget and timeline accommodate it?

3. Cross-database comparison (advanced approach) For important products, it is worth running the calculation in two databases and comparing the results. A large discrepancy warrants investigation — it may stem from differing model assumptions, geographic representativeness gaps, or outdated data in one database. This preparation is invaluable when responding to a verifier’s questions later.

Battleground Three: Modeling and Calculation

Once data has been collected, you move into model building and calculation. This phase looks like technical work on the surface, but it is in substance a series of “method selection” decisions.

Primary tools

• openLCA: free and open-source; suitable for academic use and SMEs
• SimaPro: European industry standard; paid; full-featured
• GaBi: under the Sphera brand; common in automotive and industrial sectors
• One Click LCA: construction materials-oriented; user-friendly interface; suitable for BIM integration

Key decisions at this stage

1. System boundary: follow PCR requirements strictly, but where the PCR leaves gaps, decide and document your own approach
2. Allocation method: for multi-product shared lines, use mass allocation, economic allocation, or substitution? The choice can shift results by more than 20%
3. Cut-off criteria: should trace materials be included? The ILCD default allows omission of inputs with cumulative contribution below 1%, but this must be stated in the report
4. Reference flow selection: for the same electricity type, choosing ecoinvent’s “Taiwan, market for electricity, low voltage” vs. “TW, electricity production, hard coal” can produce very different results

Why EPD Has Become a “Legal License to Market Green Claims”

Why does this layer exist? After the Volkswagen Dieselgate scandal broke in 2015, EU regulators recognized that voluntary environmental disclosure could no longer command market trust — if a multinational automaker could falsify emissions certifications, voluntary declarations had lost all credibility. After Dieselgate, the EU moved decisively toward mandatory third-party verification: EPDs must be reviewed by an independent verifier, PCRs must be established through industry consensus, and results must be traceable. Every institutional design in this layer is, at its core, a mechanism for restoring trust.

The choices made at this layer appear to come last, but in practice they set the specifications for all the work that precedes them.

Considerations for Selecting a Program Operator

Selecting a Verifier

• Typically chosen from the program operator’s approved list
• Match experience type: prioritize verifiers who have worked with your product category
• Geographic considerations: local verifiers mean lower communication overhead and no time-zone issues
• Some PCRs mandate a multi-reviewer panel review; confirm this requirement in advance

Typical Questions Asked During the Verification Stage

Preparing answers to these question types in advance can substantially shorten the verification cycle:

• Why was the system boundary drawn this way? Is anything missing?
• What is the rationale for the allocation method chosen? Have sensitivity analyses been run for alternative methods?
• What is the basis for the DQR scores? Can low-scoring items be improved?
• What is the logic for handling co-products?
• Why was this background database chosen? Why was this particular dataset selected rather than another?
• Are data sources traceable? Are original invoices or measurement records available?

The Impact of the Green Claims Directive

The EU’s Green Claims Directive, proposed in 2023 (expected to pass in 2026 and enter into force in 2028), will set a new threshold for “environmental claims” beyond EPD.

Key provisions:

• Any claim of being “green,” “low-carbon,” or “environmentally friendly” must be grounded in an LCA
• Claims must be verified by a third party
• Comparative claims (e.g., “X% lower carbon emissions than competitors”) must follow strict comparison rules
• Violations face fines of up to 4% of annual turnover — comparable to GDPR-level penalties

Implications for manufacturers: Even if you do not produce an EPD, any marketing reference to “environmental,” “sustainable,” or “eco-friendly” attributes will fall under this regulation. EPD has therefore shifted from a “marketing bonus” to a “legal license to make green claims.”

Five Cross-Layer Decisions to Think Through Before You Begin

In practice, several cross-layer decisions come up repeatedly and are worth resolving before a project launches.

Decision Point 1: Cradle-to-Gate or Cradle-to-Grave?

• Cradle-to-gate (from resource extraction to factory gate): data is easier to control; suitable for B2B and intermediate materials
• Cradle-to-grave (to end of life): requires estimating the use phase and end-of-life disposal; suitable for B2C and green building applications

Some PCRs allow Modular EPDs, which divide the lifecycle into modules — A1–A5 (production and construction), B1–B7 (use), C1–C4 (end of life), and D (recycling benefits) — with disclosure by module. This A1–D modular architecture originates from EN 15804 (the European EPD standard for construction products) and has since spread to other industries.

Decision Point 2: Internal Team or External Consultant?

A pragmatic middle path: outsource the first EPD, but specify in the contract that the consultant must deliver complete modeling files and the data inventory sheet as part of a formal knowledge transfer obligation.

Compliance consideration: If your products fall under mandatory regimes such as CBAM or the Battery Regulation, the long-term recommendation is to build internal capability — because annual declaration updates will accumulate costs that eventually exceed those of an internal team.

Decision Point 3: Single-Product EPD or Platform EPD?

• Single-product EPD: precise; one document per SKU; but high cost
• Platform / representative-product EPD: one representative product with a stated variation range; lower cost but limited representativeness. Some PCRs cap the permissible degree of variation.

SMEs typically start with the platform approach; larger companies or those with highly differentiated product ranges tend to pursue the single-product route.

Decision Point 4: What Do We Communicate Externally After Completing the EPD?

• Pure technical disclosure: post on the company website, provide to clients for reference, supply for tenders
• Marketing use: on packaging, in advertising, referenced in ESG reports

Marketing use requires particular attention to greenwashing risk. The term “greenwashing” was coined in 1986 by environmentalist Jay Westerveld, but for a long time carried no legal consequences. Since the 2020s, the EU, the UK, and the US FTC have all intensified scrutiny of green claims — and the EU Green Claims Directive has elevated violation penalties to GDPR-equivalent levels.

EPD results are “objective figures,” but “comparative claims” (such as “30% lower carbon emissions than competitors”) are subject to additional requirements — typically, both EPDs must be based on the same PCR and verified by the same body before a comparison can be made.

Decision Point 5: Making the EPD for the EU, for Asia, or Both?

In practice, a “EU-version EPD” is almost universally accepted in Asia; the reverse is not guaranteed. For multi-market manufacturers, the EU-version EPD is the “highest common denominator” choice.

Common Pitfalls Across the Three Phases of an EPD Project

Here is a summary of errors that frequently occur in