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Question

Which conversion factors does SECR use?

Answer

The UK Government GHG Conversion Factors (DESNZ, updated annually). For 2024: natural gas ≈0.183, grid electricity ≈0.207 kg CO2e/kWh. The certificate tool on this site uses the same published factors.

From our guide: SECR Explained 2026 — full context, charts and sources there.

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How this page is built: heat-loss figures follow ASTM C680 / ISO 12241 (the method behind our public calculators); facility emissions from Climate TRACE & EU ETS verified data across 30,000+ industrial sites; the 2026–2034 schedule is Regulation (EU) 2023/956, not a forecast. Published by Inzonex Research. Spotted an error? Tell us — we correct on evidence.
Source: Inzonex Carbon Hub — inzonex.co.uk/carbon · prices dated as shown on each figure · schedule per Regulation (EU) 2023/956 · indicative analytics, not compliance advice.