Scope 1 + Scope 2 Emissions Calculator (EU SME)

Scope 1 + Scope 2 emissions are the two direct categories every EU company must disclose under the Corporate Sustainability Reporting Directive (CSRD) and ESRS E1. Scope 1 covers fuels you burn on-site and in vehicles you control; Scope 2 covers electricity, heat and cooling you buy from the grid. This free calculator estimates both using UK DEFRA 2026 fuel conversion factors and IEA 2025 grid carbon intensities for the 27 EU member states.

Scope 1 vs Scope 2 Explained

Scope 1 is direct: natural-gas boilers, diesel vans, company cars, heating oil, and refrigerant leaks from air-conditioning or chillers. Every litre of diesel burned emits roughly 2.52 kg CO₂e; a kilogram of R-410A refrigerant released emits 2,088 kg CO₂e due to its high Global Warming Potential. Scope 2 is indirect but controllable through procurement — the electricity you purchase produces emissions at the power station, not at your site, yet it belongs on your inventory because your demand drives generation.

Location vs Market Based Method

ESRS E1 and the GHG Protocol require dual reporting of Scope 2. The location-based method applies your country's average grid emission factor regardless of supplier — Poland at 0.659 kg CO₂e/kWh, Sweden at just 0.025. The market-based method reflects your contractual choices: green tariffs, Power Purchase Agreements (PPAs), and renewable Guarantees of Origin. If you procure 100% certified renewable electricity, your market-based Scope 2 drops to near zero while your location-based figure stays tied to grid reality. Both numbers must appear in your CSRD disclosure.

Why CSRD Cares About Scope 1+2

CSRD Wave 2 applies to large EU companies reporting on fiscal year 2025, with disclosures due in 2026. SMEs face pressure too: the voluntary VSME standard mirrors the core climate datapoints, and larger customers increasingly request Scope 1+2 figures as part of supplier due diligence under the Corporate Sustainability Due Diligence Directive (CSDDD). Audit-grade Scope 1+2 numbers unlock green-finance products, EU Taxonomy alignment claims, and tender eligibility. Getting these numbers right early — even as estimates — prevents costly restatements later.

How to Reduce Each Scope

For Scope 1: replace gas boilers with heat pumps (typical reduction 60–80%), electrify the fleet, plug refrigerant leaks and move to low-GWP refrigerants such as R-290. For Scope 2: switch to a certified green tariff (instant market-based reduction), install on-site solar, or sign a corporate PPA. Energy-efficiency measures — LED lighting, variable-speed drives, building insulation — cut both scopes because they reduce kWh consumed. Prioritise by marginal abatement cost: refrigerant leak repair and lighting upgrades typically return <2-year paybacks, while heat pumps and PPAs require longer horizons but deliver the largest absolute tonnes saved.

Disclaimer: Estimates only. For audit-grade calculation consult a sustainability advisor. Factors source: DEFRA 2026 + IEA 2025. Last updated: April 2026.