Scope 3 emissions in Catalunya. The easy way to take part.

The hardest part of scope 3 emissions in Catalunya is not the science. It is the trust gap — between buyers who want a verifiable receipt and projects that need a stable demand signal. The fix is to bind retirement to a transaction the buyer is making anyway.

For a reader in Catalunya, the scope 3 emissions route in 2026 mirrors the global structure — a UN-eligible registry issues credits, buyers retire them, the retirement record is permanent. Local regulatory frames (national ETS, CSRD transposition, disclosure rules) shape how the receipt is used downstream, but the underlying instrument is global.

The product surfaces below — hotels, marketplace, widget, B2B Corporate ESG, country / city representation, OSS affiliate, Goodness rewards — all route to the same registry-grade retirement record. The difference is the friction. A hotel booking takes 60 seconds. A widget install takes 5 minutes. A B2B integration takes a 15-minute call. Pick the rung that matches your situation in Catalunya and the rest is automatic.

How scope 3 emissions actually works

Measuring Scope 3 begins with boundary-setting: the company identifies which of the fifteen categories are material and collects activity data—quantities of purchased materials, freight tonne-kilometres, employee travel records, product sales volumes—for the reporting year. Next, it applies emission factors: standardised coefficients (gCO₂e per unit) drawn from databases such as the US EPA's EEIO tables, Defra conversion factors, ecoinvent, or sector-specific protocols. Multiplying activity data by emission factors yields an emissions estimate for each category. Higher-quality inventories replace generic factors with supplier-specific data. A clothing brand, for instance, might ask fabric mills for their Scope 1 and 2 emissions per tonne of cotton, then allocate a share to the brand's purchases. This spend-based, supplier-specific, or hybrid approach improves accuracy but requires collaboration, data-sharing agreements, and often third-party assurance. The GHG Protocol Scope 3 Standard (2011) provides detailed calculation methodologies for each category, and the updated GHG Protocol Corporate Value Chain (Scope 3) Accounting and Reporting Standard remains the global reference. Once calculated, Scope 3 inventories are typically verified by an accredited auditor—Bureau Veritas, DNV, SGS, or similar—under ISO 14064-3 or a comparable standard. Verification can be limited (desk review) or reasonable (site visits and sample checks). The inventory is then disclosed in sustainability reports, CDP submissions, or regulatory filings. Many companies also register their data on platforms such as the Carbon Disclosure Project or the Science Based Targets initiative portal. Reduction follows measurement. Companies set category-specific targets—switching to lower-carbon raw materials, electrifying logistics fleets, designing products for longevity or recyclability, engaging suppliers through capacity-building programmes. Retirement of carbon credits is sometimes used to address residual, hard-to-abate emissions in categories such as business travel or waste, but credits do not substitute for absolute reductions in robust climate strategies. Registries such as Verra, Gold Standard, the American Carbon Registry, and Climate Action Reserve track credit issuance and retirement, ensuring each tonne is counted only once.

Who participates

Four groups drive Scope 3 accounting in 2026. Large corporates face the most immediate obligations. Companies reporting under CSRD—roughly 50,000 EU entities plus non-EU firms with significant European operations—must disclose all material Scope 3 categories and forward-looking reduction plans. Technology firms such as Microsoft and Apple publish annual Scope 3 inventories covering supply-chain manufacturing, product use, and end-of-life. Retailers including Tesco and Marks & Spencer account for product-embedded emissions. Financial institutions such as HSBC and BNP Paribas report financed emissions (Category 15) across loan and investment portfolios, often the largest single category. Small and medium enterprises increasingly participate, either voluntarily or because a large customer demands value-chain data. A component supplier to an automotive original equipment manufacturer, for example, may receive a questionnaire requesting Scope 1, 2, and 3 emissions per part. Third-party platforms—Watershed, Persefoni, Plan A—offer software to help SMEs calculate and share emissions data without hiring dedicated sustainability teams. SBTi launched a streamlined target-setting route for companies with fewer than 500 employees, lowering the barrier to science-based commitments. Governments and multilateral bodies shape the rules. The EU's CSRD and taxonomy, the UK's mandatory Task Force on Climate-related Financial Disclosures (TCFD) reporting for listed companies and large asset managers, and similar frameworks in Canada, Japan, and Singapore all reference Scope 3. The UNFCCC's Article 6.2 framework allows internationally transferred mitigation outcomes (ITMOs) to flow between countries, potentially enabling companies to use high-integrity credits toward national commitments, though rules are still evolving. Individuals, while not direct reporters, influence corporate Scope 3 through consumption choices and advocacy; consumer-level carbon calculators now routinely include upstream product emissions, raising awareness of value-chain footprints.

How to take part via IMPT

IMPT offers one route for individuals, SMEs, and larger organisations looking to address value-chain emissions in a transparent, accessible way. The platform connects users to certified carbon-reduction projects—covering renewable energy, methane capture, clean cookstoves, and nature-based solutions—sourced from established registries. Each tonne of CO₂ retired is recorded on a public blockchain ledger, providing a permanent, auditable trail that reduces double-counting risk and increases trust. For consumers, IMPT integrates climate action into everyday transactions. A hotel booking, for example, can automatically retire one tonne of CO₂ on the user's behalf, with the retirement certificate stored in a digital wallet. The marketplace also allows direct browsing and purchase of verified credits, and a 'Goodness' rewards mechanism recognises ongoing engagement—though it carries no guaranteed financial return and is not structured as a commission or revenue-share scheme. For businesses, IMPT provides a B2B portal for Scope 3 offsetting and an open-source widget that community owners and platforms can embed, enabling members to take climate action without leaving the host site. Corporate pricing and project portfolios are tailored per market, often in partnership with country-level climate organisations, to ensure local relevance and regulatory alignment. IMPT is a tool, not a substitute for measurement, reduction targets, or supplier engagement, and works best as part of a broader climate strategy that prioritises absolute emissions cuts first.