SERVICES
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ContactGHG and environmental data now flow directly into regulatory disclosures, investor assessments, procurement requirements, and science-based target commitments. The methods matter: wrong emission factors, misapplied scope boundaries, or non-compliant product footprints produce liabilities, not just inaccuracies.
We build climate accounting systems that are methodology-correct, audit-ready, and aligned to the frameworks that reference them.
6 services, one accountable partner.
A complete Scope 1, 2, and 3 GHG inventory aligned to the GHG Protocol — the global standard referenced in CDP, SBTi, CSRD, and IFRS S2. Producing a defensible inventory means more than applying emission factors: it requires the right organizational boundary, a documented data collection architecture, and outputs structured for disclosure, target-setting, and third-party verification. We design the system, run the calculation, and produce the inventory.
Explore Corporate GHG AccountingGHG Protocol, ISO 14040/44, ISO 14067, ISO 14046, EN 15804
Full cross-standard capability across every climate accounting methodology
sustainability projects
Including GHG inventories, LCAs, EPDs, and environmental footprints across manufacturing, energy, aviation, finance, and more
Integrated delivery
Accounting outputs that feed directly into permanent ESG data infrastructure — not isolated reports
WHY SEMTRIO
The most common failure mode in GHG and environmental accounting is not a wrong number — it is a number that cannot be explained, reproduced, or defended when an auditor, investor, or regulator asks how it was produced. Emission factors without documented sourcing, scope boundaries without a documented rationale, and LCAs without transparent assumptions all create exposure. We design accounting systems from the methodology up, with documented processes that stand up to third-party scrutiny.
Our capability spans every major climate accounting standard: GHG Protocol Corporate and Product Standards, ISO 14040/14044 for LCA, ISO 14067 for PCF, ISO 14046 for water footprint, and EN 15804 for EPDs. We work across all six service lines in this cluster — which means that a corporate GHG inventory, a product carbon footprint, and an LCA for the same organization share a consistent methodology, consistent data, and a consistent review process.
For organizations using Carbondeck, our accounting outputs integrate directly into the platform — providing a continuous, audit-ready data infrastructure rather than a point-in-time calculation.
Scope your climate accounting requirement with our team →
2,000+
Sustainability projects, including GHG inventories, LCAs, EPDs, and environmental footprints across 10+ sectors
6 service lines
One accounting team, from corporate Scope 1/2/3 to product-level carbon footprint, LCA, EPD, and water — all methodology-consistent
Scope 1, 2, 3
Full inventory capability aligned to GHG Protocol, SBTi, CDP, CSRD, and IFRS S2
Whether you're scoping a single service engagement, evaluating end-to-end advisory across multiple clusters, or looking for one accountable partner across strategy and disclosure — start here.
Yaren Ünal
Senior Specialist,Client Solutions
Hamza Söylemez
Specialist,Client Solutions
Whether you are building your first GHG inventory, calculating a product carbon footprint for market access, producing an LCA to support an EPD, or designing a group-level emissions consolidation framework — we will assess your scope, select the right methodology, and produce outputs that hold up.
