BELER Carbon Accounting System

01 Executive Summary

BELER is a consumption-based carbon accounting framework built on a simple premise: greenhouse-gas emissions exist because someone, somewhere, consumes something. Yet nearly all established accounting systems — national inventories, corporate reporting standards, product labels — assign emissions where they are produced, not where the value of those emissions is ultimately enjoyed. The result is fragmented accountability, double counting, carbon leakage between jurisdictions, and individuals who cannot obtain a single trustworthy answer to the question: what is my footprint?

BELER closes that gap with a universal, internally consistent allocation system that follows consumption. Every kilogram of CO₂-equivalent emitted anywhere in the economy is attributed exactly once, to the party that consumes the good or service embodying it — or, where emissions serve no consumer (waste, accidents, negligence), to the owners of the enterprise responsible.

The framework rests on two pillars. TPGN (Transversal Principles of General Normativity) defines seven allocation principles that apply identically at every scale, from a single meal to a national economy. SINTRA (Structured Intensity Levels for Nested Tiered Resource Accounting) defines five nested resolution tiers, letting participants choose their trade-off between effort and accuracy — from quick category-level approximation (±30–50%) to research-grade measurement (±1–5%) — while remaining methodologically compatible across tiers.

Because allocation is unique and consumption-anchored, BELER supports applications that current systems cannot serve coherently: personal carbon budgets aligned with climate targets, carbon-conscious purchasing, corporate footprints without scope double counting, investor accountability for corporate failures, consumption-based policy design, and verified offsetting.

The framework specification is open and free to implement under CC BY 4.0. CEITA SL sustains development through a commercial ecosystem built around the standard — certification, advisory services, credit generation, an exchange, and a consumer engagement platform — described briefly in Section 8 and in companion documents.

About this document: the canonical statement of the BELER framework specification. Implementation status, reference tooling, and participation channels are maintained at ces.ceitasl.com/beler.

02 Foundational Principles

2.1 The Consumption Premise

BELER operates from the principle that consumption is the actual driver of all production, and therefore of all anthropogenic emissions. The framework reads the economy through four lenses:

• Economic systems: which goods and services are purchased, and by whom
• Production systems: which emissions arise to create those goods and services
• Geographic systems: where emissions occur, and under which energy mixes and infrastructures
• Demographic systems: which individuals and institutions ultimately consume the output

By anchoring accountability to consumption, BELER creates a direct causal link between individual and institutional choices and environmental impact. Production-side actors are not exempted — they answer for waste, inefficiency, and failures through the ownership principle in Section 3.2 — but responsibility for purposeful emissions travels with the value those emissions create.

2.2 Universal Adjustability

A single design goal shapes the whole framework: one methodology, every scale. The same principles that allocate the footprint of a cup of coffee must allocate the footprint of a multinational's logistics network, a city's housing stock, or a nation's imports. SINTRA (Section 4) provides the resolution dial that makes this practical, so a casual user and a national statistics office can produce mutually consistent figures that differ only in precision.

03 TPGN — Transversal Principles of General Normativity

TPGN is the normative core of BELER: seven transversal principles that govern footprint allocation regardless of scale, geography, or accounting tier. They are designed to be applied together; each constrains the interpretation of the others.

3.1 Consumption-Based Accountability (CBA)

Core principle The carbon footprint of any good or service is assigned to the party that consumes it, at the point of consumption — not to the producer, retailer, or intermediary.

Production emissions are embodied in products and travel through supply chains until final consumption, where they land in the consumer's account. Intermediaries carry footprints only transiently, as inventory.

Key implications

• Food: the footprint of a meal is assigned to the person who eats it, at the moment of consumption — not to the farmer, processor, or restaurant
• Funded consumption: if Person A purchases a meal that Person B eats, Person B bears the footprint; paying is not consuming
• Dependent care: dependents bear the footprint of their own consumption; a child who eats food or uses electricity accrues that footprint personally, preventing artificial concentration in guardians' accounts
• Shared resources: consumption of shared goods (household energy, common spaces) is allocated proportionally among the individuals who actually consume them

Edge cases and clarifications

• Households: household-level consumption is a convenience aggregate only; it must remain decomposable to individual shares
• Business context: consumption that occurs in the course of business (fuel for delivery, office electricity) is procurement, not personal consumption; it embeds into the product footprint passed to customers, while genuinely personal consumption at work (an employee's lunch) stays with the individual
• Healthcare: individuals bear the footprint of healthcare services they receive; where treatment is necessitated by corporate negligence or environmental harm, the footprint may be reassigned to the responsible enterprise under CAP
• Gifts: the footprint of a gifted good transfers to the recipient upon acceptance, like the good itself

3.2 Corporate Accountability Principle (CAP)

Core principle An enterprise's emissions divide into exactly two streams: emissions embodied in useful output, which pass to consumers through products and services; and emissions that produce no consumer value — waste, inefficiency beyond best practice, accidents, recalls, negligence — which are assigned to the enterprise's owners (shareholders) in proportion to ownership.

CAP makes ownership meaningful in carbon terms. Shareholders enjoy the returns of enterprise; under BELER they also hold its non-productive footprint. This creates a direct investment-side incentive for operational discipline that production-based systems cannot generate.

Key implications

• Product footprints: life-cycle assessment for products includes only emissions that serve the product's function; intentional or negligent excess is excluded from the consumer-facing figure and routed to shareholders
• Corporate failures: the footprint of a recalled product batch, a pipeline spill's remediation, or destroyed unsold inventory lands on shareholders, never on customers
• Operational overhead: emissions not attributable to any product line (headquarters energy, corporate travel) are allocated to shareholders as the cost of owning the enterprise
• Segregation: shareholder footprints are tracked separately from personal consumption footprints, preserving the integrity of both signals

Examples

• Product recall: a food producer recalls a contaminated batch. The full life-cycle footprint of the recalled units — production, distribution, disposal — transfers to the producer's shareholders.
• Industrial accident: a pipeline failure releases product and requires remediation. All associated emissions are assigned to shareholders pro rata; no consumer consumed anything.

3.3 Temporal Sourcing Principle (TSP)

Core principle Footprints are calculated with the emissions factors of the moment and place where the emissions actually occur: real-time factors for direct consumption, historical factors for embodied emissions.

Key implications

• Direct consumption: electricity drawn now is scored at the grid's carbon intensity now; drying your hair at noon under solar surplus differs from doing so on evening peak
• Embodied emissions: a product manufactured in 2019 carries the emissions factors of its 2019 production, permanently, regardless of later grid improvements
• Durable goods: embodied footprints of durable goods may be amortized over service life at the chosen SINTRA tier, but the underlying factors remain historical
• Retroactive corrections: when better data emerges, corrections apply to current and future accounting; individuals cannot retroactively claim credit against improved standards, and corporate accountability for past failures uses the factors current at the time of the failure

TSP rewards contemporaneous awareness: the system continuously reflects the real carbon state of the energy system, encouraging consumption to shift toward low-intensity windows.

3.4 Geographic Specificity Principle (GSP)

Core principle Emissions factors must reflect the geography where emissions occur — energy mix, infrastructure, supply chains, and climate.

Key implications

• Regional factors: electricity, heating, and transport are scored with local or regional factors, not global averages, wherever the SINTRA tier permits
• Supply-chain geography: embodied emissions reflect where inputs were actually produced and how they travelled
• Climate adjustment: baseline expectations (heating, cooling) account for local climate so that comparisons between individuals are meaningful; GSP feeds the equity baselines of EJP
• Infrastructure reality: footprint context acknowledges what alternatives exist locally — relevant to fairness judgements, though not to the physical accounting itself

3.5 Data Verification and Transparency Principle (DVTP)

Core principle Every footprint must be auditable: data sources, emissions factors, calculation methods, and assumptions must be documented, disclosed, and — at higher SINTRA tiers — independently verified.

Key implications

• Open methodology: all emissions factors, LCA datasets, and calculation methods used in any BELER-compliant implementation must be publicly documented
• Disclosed estimation: where data is unavailable and estimation is used, the estimation method and its uncertainty must be explicitly declared
• Tier honesty: every published figure carries its SINTRA tier; claiming a higher tier than the data supports is a compliance violation
• Independent audit: SINTRA 4 and 5 figures require third-party verification to be asserted publicly

3.6 Equity and Justice Principle (EJP)

Core principle The accounting must not unfairly penalize individuals for circumstances beyond their control, and must distinguish subsistence consumption from discretionary consumption.

Key implications

• Contextual baselines: footprints are interpreted against local baselines reflecting climate, infrastructure, and income context (GSP-informed)
• Subsistence vs. discretionary: reporting separates necessary consumption (basic nutrition, essential heating, medical care) from lifestyle choices
• Medical necessity: medically required consumption is flagged and never treated as discretionary
• Infrastructure limitations: individuals without access to alternatives (e.g., no public transit) are not scored as if the alternative existed; the deficit is attributed to systemic context
• Systemic vs. individual responsibility: EJP keeps the framework honest about which reductions individuals can deliver and which require structural change

3.7 Comprehensiveness Principle (CP)

Core principle Footprints encompass all greenhouse gases, converted to CO₂-equivalents (CO₂e), across the full life cycle of consumed goods and services, at the resolution the chosen SINTRA tier defines.

Counting only direct CO₂, or only selected life-cycle stages, produces distorted signals and perverse incentives. CP requires that whatever the tier's resolution, its boundary is complete: all gases, all stages, no silent omissions. Omissions forced by data gaps fall under DVTP disclosure.

04 The SINTRA Framework — Tiered Resource Accounting

SINTRA (Structured Intensity Levels for Nested Tiered Resource Accounting) resolves the central tension of carbon accounting: accuracy demands effort, but participation demands accessibility. SINTRA defines five nested tiers. Each tier is fully usable on its own, applies the complete TPGN principle set, and produces figures consistent with — merely less precise than — the tiers above it. Participants enter where they can and ascend as their data and commitment grow.

4.1 SINTRA 1 — Basic Approximation

Scope

High-level categorization using standardized national or regional averages.

Target users

General public, initial adopters, educational contexts, individuals with limited time or data access.

Data requirements

Minimal: user inputs broadly quantified consumption by category (e.g., "1 kg beef," "100 km driven," "3 t-shirts purchased").

LCA depth

Standardized national or regional category averages; no differentiation between manufacturers or retailers.

Accuracy

±30–50% typical margin versus actual footprint.

Advantages

• Extremely low barrier to entry; minutes per week
• Minimal data collection burden
• Provides directional guidance for high-impact behavior changes
• Suitable for raising general awareness

Limitations

• Cannot distinguish between high- and low-carbon vendors of the same product category
• Does not reward informed consumer choices within categories
• Unsuitable for compliance or certification purposes

4.2 SINTRA 2 — Enhanced Consumer

Scope

Product-category-level accounting with manufacturer or brand granularity where data exists.

Target users

Engaged consumers, individuals seeking to actively reduce their footprint, small businesses.

Data requirements

Moderate: itemized purchases (receipt scanning, bank-transaction categorization, barcodes) mapped to product-category LCA data; brand-level data used where published.

Accuracy

±15–35% typical margin versus actual footprint.

Advantages

• Rewards conscious consumer choices with measurable footprint reductions
• Enables meaningful comparison between competing products
• Creates demand-side market incentives for companies to publish product LCAs
• Largely automatable through purchase-data integrations

Limitations

• Coverage gaps where manufacturers publish no product LCA data
• Still relies on standardized assumptions for use-phase emissions
• Accuracy depends on the quality of third-party LCA databases

4.3 SINTRA 3 — Comprehensive Individual

Scope

Detailed tracking incorporating personal usage patterns, supply-chain specifics, and behavioral factors.

Target users

Highly motivated individuals, sustainability professionals, researchers, individuals seeking certification offsets.

Data requirements

Significant: itemized consumption with product-specific LCA data adjusted for individual usage patterns; smart-meter, mobility, and device integrations; real-time energy factors.

Accuracy

±5–15% typical margin versus actual footprint.

Advantages

• High accuracy suitable for personal carbon budgeting and verified offsetting
• Captures individual behavior differences invisible to lower tiers
• Generates research-grade longitudinal data (with consent)

Limitations

• High data-collection burden; may limit sustained use
• Privacy concerns with detailed consumption tracking — see Section 6.4
• Requires specialized tooling and integrations

4.4 SINTRA 4 — Institutional Comprehensive

Scope

Complete organizational accounting with supply-chain tracing, operational monitoring, and stakeholder allocation.

Target users

Corporations, government agencies, NGOs, universities, large organizations seeking certification or regulatory readiness.

Data requirements

Extensive: organization-wide procurement, energy, logistics, and operations data; supply-chain emissions traced through multiple tiers; results allocated to stakeholders (customers via product footprints, shareholders via CAP) under TPGN.

Accuracy

±3–10% typical margin versus actual footprint; independent audit required for public claims.

Advantages

• Eliminates the scope-overlap double counting endemic to current corporate standards
• Produces consumer-facing product footprints and owner-facing CAP footprints from one dataset
• Compatible with — and mappable to — GHG Protocol and ISO 14064 reporting
• Facilitates supply-chain engagement with verified data

Limitations

• Requires significant resources and systems integration
• Supply-chain data availability may be limited for some inputs
• Ongoing monitoring and verification costs

4.5 SINTRA 5 — Research and Policy

Scope

Maximum accuracy with comprehensive measurement, supply-chain auditing, and uncertainty quantification.

Target users

Academic researchers, regulatory bodies, legal proceedings requiring evidentiary standards, policy analysts, carbon-market methodology developers.

Data requirements

Exhaustive: field measurement, multi-tier supply-chain audits, laboratory analysis where relevant, full uncertainty modeling.

Accuracy

±1–5% typical margin of error, with quantified uncertainty bounds.

Advantages

• Maximum accuracy for high-stakes applications
• Provides the foundational data for improving lower SINTRA tiers
• Suitable for scientific publication and policy modeling
• Meets evidentiary standards for legal and regulatory use

Limitations

• Extremely resource-intensive
• Not practical for routine personal or organizational use
• Requires specialized expertise

4.6 Nesting and Bridging Between Tiers

SINTRA tiers are nested by design. Higher-tier measurements continuously refine the averages used at lower tiers: SINTRA 5 research calibrates SINTRA 1 category factors; SINTRA 4 corporate data populates SINTRA 2 brand-level factors. Data flows downward as defaults and upward as verification. A user may also mix tiers across categories — tracking food at SINTRA 3 while leaving travel at SINTRA 1 — with the composite figure reported at the lowest tier used, per DVTP.

05 Advantages over Existing Systems

5.1 Versus Economic Input-Output Models

Spend-based models estimate footprints from money spent per category, assuming average carbon intensity per currency unit. They cannot distinguish an efficient producer from a wasteful one at the same price point, and they break down entirely for price-volatile goods. BELER tracks actual consumption quantities with product-resolved factors (from SINTRA 2 upward), rewarding genuinely lower-carbon choices rather than merely cheaper ones.

5.2 Versus Production-Based National Accounting

The UNFCCC inventory system assigns emissions to the territory where they occur. A country can improve its inventory by offshoring manufacturing while its consumption — and the global emissions serving it — grows. BELER's consumption basis eliminates this leakage: imports carry their embodied footprint to the consuming country's residents, exports leave with the goods. National figures become honest reflections of demand.

5.3 Versus Existing Consumer Carbon Calculators

Mainstream calculators are one-off questionnaires built on broad averages, with no continuity, no verification, and no pathway to better data. BELER offers continuous accounting, a defined accuracy ladder (SINTRA), verifiable methodology (DVTP), and consistent allocation rules (TPGN) — a system, not a quiz.

5.4 Versus Corporate Accounting Standards

Under the GHG Protocol, one company's Scope 1 is another's Scope 3; aggregate corporate reporting counts the same tonne several times, and no party is uniquely accountable for it. BELER allocates each tonne exactly once — to a consumer through product footprints or to owners through CAP — while remaining mappable to scope-based disclosures for regulatory continuity (CSRD, ISO 14064). The CAP stream additionally creates owner-level accountability for waste and failures, which scope accounting does not express at all.

06 Challenges and Mitigations

6.1 Data Availability and Quality

Challenge: Comprehensive LCA data is not available for all products and services, particularly in lower-income markets and long-tail categories.

Mitigation: Begin with high-impact, data-rich categories (energy, transportation, major food groups); use hierarchical estimation with explicit uncertainty flags; incentivize manufacturer LCAs through consumer demand and competitive advantage; develop estimation methodologies for data-poor contexts.

6.2 User Burden and Engagement

Challenge: Higher SINTRA tiers require significant user effort, potentially limiting adoption.

Mitigation: Offer lower tiers for casual users; automate collection through digital integrations (purchase tracking, smart devices); provide meaningful feedback and visualizations; apply gamification and social features to sustain engagement.

6.3 Corporate Resistance

Challenge: CAP may face resistance from corporations and investors concerned about liability and valuation effects.

Mitigation: Demonstrate that CAP creates market advantages for well-run companies; phase in gradually with clear timelines; provide adoption guidance and support; leverage regulatory frameworks and investor pressure where they already point this direction.

6.4 Privacy and Data Security

Challenge: Detailed consumption tracking raises serious privacy concerns, particularly at SINTRA 3 and above.

Mitigation: Privacy-by-design architecture; user ownership and control over data sharing and granularity; anonymization for aggregate reporting; transparent data-governance frameworks; GDPR compliance as the design floor, not a ceiling.

6.5 International Coordination

Challenge: Consumption-based accounting across borders requires supply-chain tracing and methodological harmonization.

Mitigation: Build on existing international standards (ISO, GHG Protocol mappings); develop interoperability protocols for national implementations; engage international standards bodies early; allow regional variation within TPGN constraints.

6.6 Dynamic Emissions Factors

Challenge: Real-time factors (TSP) create complexity for verification and comparison.

Mitigation: Use contemporaneous factor archives (time-stamped, auditable); maintain historical factor databases for retrospective analysis; standardize comparison windows; publish factor methodologies under DVTP.

07 Use Cases

7.1 Personal Carbon Budgeting

Individuals adopt a personal carbon budget aligned with climate targets (e.g., a trajectory toward roughly 2 tonnes CO₂e per capita consistent with 1.5 °C pathways) and track consumption against it: real-time tracking, identification of high-impact areas, reduction comparison with peers and over time, goal setting and progress visualization.

7.2 Carbon-Conscious Consumer Choice

At the point of purchase, consumers compare product footprints, identify lower-carbon vendors and brands, and aggregate demand signals that reward manufacturers who publish verified LCAs — turning footprint data into a competitive axis.

7.3 Corporate Sustainability Management

Organizations use SINTRA 4 to track their complete footprint, identify reduction hotspots, set science-based targets, report to stakeholders with verified data, and manage supply-chain emissions through supplier engagement.

7.4 Investor Accountability

Shareholders use CAP data to understand the footprint embedded in their ownership positions, incorporate carbon liability into investment decisions, hold boards accountable for operational emissions and failures, and price the carbon consequences of corporate governance.

7.5 Policy Development and Evaluation

Governments and researchers use consumption-based data to understand population-level patterns, design targeted interventions for high-impact behaviors, evaluate policy effectiveness, model regulation and incentive impacts, and allocate carbon budgets on a consumption basis.

7.6 Carbon Markets and Offsetting

BELER provides verified footprint data for personal offset purchases, corporate carbon credit markets, carbon-tax and cap-and-trade administration, verification of neutrality claims, the minting of self-declared or verified reduction credits by individuals and organizations, and the development of credible reduction programs. Section 10 develops this integration.

7.7 Education and Behavioral Change

Educational institutions and behavior-change practitioners use BELER to teach climate impact concretely, run reduction challenges and competitions, demonstrate intervention effectiveness, and build durable climate literacy.

08 The BELER Ecosystem

The BELER specification is, and will remain, an open standard under CC BY 4.0. CEITA SL finances stewardship of the standard through commercial ventures built around it. These ventures depend on the standard's integrity; they do not alter it. Each is specified in a companion document; this section records only their place in the architecture. Participation in the credit market is permissionless at the self-declared level: implementing the standard is sufficient to take part, and CEITA SL's commercial role concentrates on verification, certification, and market operation — not on controlling access.

• BELER Certification and Advisory: conformance certification for implementations, organizational footprints (SINTRA 4), and practitioners, plus implementation consulting and commercial licensing
• Credit Generation: a two-class architecture. Self-declared credits can be minted by any participant whose accounting meets the framework's class rules — no intermediary, license, or CEITA SL approval required — and carry safeguards that scale with tier uncertainty: confidence haircuts, extended vesting, and clawback on restatement. Verified credits derive from EJP-adjusted consumption reductions measured at SINTRA 3+ under independent verification — credits anchored in the same accounting that measures the footprint they offset
• Exchange services (working name under revision): an open marketplace and retirement registry for BELER credits of both classes, with class- and tier-transparent listings, market-set pricing, and retirement directly against personal and institutional footprints
• Consumer engagement platform (working name under revision): a consumer application through which individuals fund offsets through attention and verified actions — watching sponsored content, completing challenges — closing the loop between awareness and retirement at zero out-of-pocket cost

Neutrality commitment Certification decisions, credit issuance, and exchange operations are governed by published methodologies under DVTP. No commercial arrangement modifies the framework specification, which evolves only through the public revision process in the IP and Usage Terms document.

09 Future Development Directions

9.1 Artificial Intelligence and Machine Learning

• Automated LCA estimation from product descriptions and imagery
• Predictive modeling of footprint trajectories based on observed patterns
• Personalized reduction recommendations ranked by feasibility and impact
• Anomaly detection for data-quality assurance and audit triage

9.2 Supply-Chain Tracing Infrastructure

• Immutable, tamper-evident records of supply-chain emissions data
• Verified product provenance for high-value supply chains
• Transparent allocation of multi-tier supply-chain footprints
• Smart-contract automation for factor updates and verification events

9.3 Financial Systems Integration

• Real-time carbon impact displayed at the point of purchase
• Carbon-weighted investment portfolios using CAP data
• Carbon budgets integrated alongside financial budgets in banking apps
• Carbon impact as a factor in credit ratings and lending decisions

10 Integration with Carbon Markets

The BELER Carbon Accounting System represents a paradigm shift in how we understand and attribute carbon emissions — and carbon markets are where that shift becomes financially consequential. Consumption-based footprints define the demand side of offsetting honestly: a person or institution knows, with stated accuracy, what they must retire to claim neutrality.

TPGN ensures allocation fairness across the market: CBA defines who owes, CAP prevents enterprises from socializing failure emissions, DVTP makes every claimed reduction auditable, and EJP keeps subsistence consumption from being monetized against the vulnerable. SINTRA provides the accuracy ladder that determines which claims a given dataset can support: offset retirement against a SINTRA 1 estimate is directional; against SINTRA 3+, it is verifiable.

On the supply side, consumption reductions below contextual baselines constitute a measurable, additional, and attributable basis for credit issuance. The framework differentiates instruments by assurance, not by permission: any individual or organization keeping BELER accounts may mint self-declared reduction credits under the framework's safeguard rules — confidence haircuts sized to the tier's stated uncertainty, extended vesting, and registry-enforced clawback — while independently verified reductions at SINTRA 3 and above form the premium class. Prices are set by the market; lower-assurance classes are expected to clear at material discounts that reflect their wider error bars. The result is a market in which footprints, reductions, credits, and claims all derive from one consistent accounting system, rather than from the current patchwork of incompatible standards.

11 Participation and Contact

BELER is an open standard stewarded by CEITA SL, which welcomes feedback, suggestions, and collaboration from researchers, developers, sustainability practitioners, and potential implementation partners. Contributions to methodology, emissions-factor data, and reference tooling are particularly sought.

Organization

CEITA SL — CEITA Environmental Services (CES)

Address

Carrer Escacs 9, 08191 Rubí, Barcelona, Spain

Principal developer

Roger Bellver

Website

ces.ceitasl.com/beler

General

roger@ceitasl.com

Licensing inquiries

licensing@ceitasl.com

Compliance reports

compliance@ceitasl.com

Open licensing: the BELER Framework specification and methodology documentation are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0). Software implementations and code may be licensed under the Apache License, Version 2.0 at the implementer's discretion. See the companion document "BELER Intellectual Property Rights and Usage Terms v2.0" for trademark usage, certification claims, and attribution requirements.

A Appendix A — Document Control and Revision History

Document version

2.1

Last updated

June 11, 2026

Maintained by

CEITA SL

License

CC BY 4.0