Carbon Footprint for Irish SMEs: A Practical 2026 Guide
Why Irish SMEs Are Receiving Carbon Questionnaires
Carbon footprint reporting for Irish small businesses is a growing requirement in 2026. Ireland's position as an EU member state means that the Corporate Sustainability Reporting Directive (CSRD) applies directly to large Irish companies — and their supplier data requests flow down to Irish SMEs of all sizes.
Key drivers for Irish businesses:
- CSRD supply chain reach — Large Irish companies (IDA Ireland clients, large multinationals based in Ireland) must report Scope 3 supply chain emissions from 2025
- Irish government procurement — Office of Government Procurement (OGP) frameworks increasingly include carbon data requirements for larger contracts
- US multinational clients — Many Irish SMEs supply US multinationals operating in Ireland; SEC climate rules create additional data requests
- Climate Action Plan 2024 — Ireland's national climate targets create sectoral reporting expectations
Irish Emission Factors: SEAI National Data
For Irish carbon reporting, use emission factors from the Sustainable Energy Authority of Ireland (SEAI). Key 2023–24 factors:
| Source | SEAI / DEFRA Factor | Unit |
|---|---|---|
| Ireland grid electricity | 0.295 | kgCO2e per kWh |
| Natural gas | 0.204 | kgCO2e per kWh (or 2.35 per m³) |
| Diesel (road) | 2.683 | kgCO2e per litre |
| Petrol | 2.267 | kgCO2e per litre |
| LPG | 1.555 | kgCO2e per litre |
| Ireland average car | 0.170 | kgCO2e per km |
Note: Ireland's electricity grid has been decarbonising rapidly as wind energy capacity increases. The 2023 factor of 0.295 kgCO2e/kWh is lower than Germany's (0.380) and Poland's (0.670), but higher than France's (0.052) and Sweden's (0.013). Use the most recent SEAI published factor for your reporting year.
Worked Example: Irish SME Carbon Calculation
Sample company: A 20-person Dublin-based professional services firm
Scope 1 — Gas heating: 9,000 m³ × 2.35 kgCO2e/m³ = 21,150 kgCO2e = 21.2 tCO2e
Scope 2 — Electricity: 35,000 kWh × 0.295 = 10,325 kgCO2e = 10.3 tCO2e
Scope 3 — Business travel (Dublin–London flights × 12): 3.8 tCO2e
Scope 3 — Commuting (20 staff, Dublin commute): 9.6 tCO2e
Scope 3 — Waste: 0.5 tCO2e
Total: 45.4 tCO2e | Per employee: 2.3 tCO2e/FTE
Ireland and CSRD: What Irish Businesses Need to Know
CSRD applies in Ireland as in all EU member states. Large Irish companies (250+ employees, €40M+ turnover) were required to report for financial year 2024. All other large Irish companies must report from financial year 2025. Listed Irish SMEs follow from 2026.
Irish SMEs are not directly subject to CSRD reporting — but their large Irish and EU clients are, and those clients need Scope 3 supplier emissions data from the Irish supply chain.
Generating a Carbon Passport for Irish Supplier Questionnaires
DeCarbonOPS supports Irish businesses with DEFRA 2023 and EU-aligned emission factors. Enter your utility consumption and travel data in standard Irish units and the platform produces your Scope 1, 2, and 3 totals with a permanent verification URL — accepted by Irish, EU, UK, and US procurement portals. Free for your first annual Carbon Passport.
Frequently Asked Questions
Do Irish SMEs need to comply with CSRD?
CSRD directly applies to large Irish companies (250+ employees, €40M+ turnover, or €20M+ assets) — not most SMEs. However, because large Irish companies must report their Scope 3 supply chain emissions under CSRD, Irish SME suppliers are indirectly affected and are receiving carbon data requests from their large Irish and EU enterprise clients.
What emission factor should Irish businesses use for electricity?
Irish businesses should use the SEAI (Sustainable Energy Authority of Ireland) grid emission factor for the relevant reporting year. For 2023–24 reporting, Ireland's grid factor is approximately 0.295 kgCO2e per kWh. This factor is declining annually as Ireland's renewable energy capacity (predominantly wind) increases. Always use the most recent SEAI published factor for your reporting year.
What is the difference between SEAI factors and DEFRA factors for Irish businesses?
SEAI publishes Ireland-specific emission factors based on the Irish grid mix. DEFRA publishes UK-specific factors. For Irish businesses reporting to EU clients under CSRD, use SEAI factors for Irish electricity and EU-standard factors for fuel combustion. For Irish businesses also supplying UK clients under SECR, DEFRA factors apply to UK operations. DeCarbonOPS uses DEFRA 2023 factors as the default, which are appropriate for EU-standard fuel combustion reporting.
Which Irish companies are driving supply chain carbon data requests?
Large Irish companies with CSRD obligations that are actively collecting supplier carbon data include: Kerry Group, CRH, Smurfit Kappa, AIB, Bank of Ireland, Ryanair (for supplier ESG questionnaires), Kingspan, Glen Dimplex, and major IDA Ireland client multinationals operating in Ireland including Google, Apple, Meta, and Pfizer.
How does Ireland's Climate Action Plan affect SMEs?
Ireland's Climate Action Plan 2024 sets economy-wide targets for a 51% reduction in emissions by 2030 and net zero by 2050. Sectoral ceilings apply to industry, transport, and heating. While the plan does not directly mandate SME carbon reporting, it creates regulatory and market pressure through sectoral decarbonisation requirements, carbon pricing on fuels, and public sector procurement requirements that cascade to suppliers.
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