Ireland's carbon tax rises to €100/tonne by 2030. Here's what that means for fuel costs, business planning, and decarbon...
Ireland's carbon tax reached €56 per tonne of CO₂ in 2024. Under the Climate Action and Low Carbon Development Act 2021, it is scheduled to hit €100 per tonne by 2030. For any Irish business that uses fuel oil, natural gas, diesel, or coal, this is a known and plannable cost increase. Most businesses haven't planned for it.
The carbon tax trajectory in Ireland is written into primary legislation. The Finance Acts since 2020 have been consistent:
| Year | Rate (€/tonne CO₂) |
|---|---|
| 2023 | €48.50 |
| 2024 | €56.00 |
| 2025 | €63.50 |
| 2026 | €71.00 |
| 2027 | €78.50 |
| 2028 | €86.00 |
| 2029 | €93.50 |
| 2030 | €100.00 |
There is no political pressure to reverse this schedule. Every major party in the Oireachtas has supported it. The revenue — approximately €800 million annually at current rates, rising toward €1.1 billion by 2030 — funds climate transition measures and replaces a portion of what otherwise would be general taxation.
The practical translation:
Agriculture. Farmers are the most politically sensitive group here. Marked green diesel (tractor diesel) has a lower rate but the carbon tax element still applies. Plastic tunnel heating, grain drying, and livestock building heating are all carbon-taxed. Agricultural emissions from livestock (methane) are not directly covered by the carbon tax — they're under the agriculture sector's separate emissions targets — but fuel and fertiliser costs are.
Hospitality. Hotels and restaurants running gas-fired kitchens and oil-heated accommodation are material consumers. Energy represents 3–6% of turnover in the hospitality sector; rising carbon tax without fuel switching will erode margins.
Haulage and logistics. Diesel-dependent. Carbon tax alone isn't the conversion argument for EVs — the total cost of ownership model is — but it contributes. SIMI data shows EV penetration in commercial vehicles is still below 2% in Ireland. Fleet electrification timelines are 2027–2032 for most operators.
Manufacturing. Process heat is the hard problem. Replacing gas-fired kilns, furnaces, or boilers with electric or hydrogen alternatives requires capital investment of €0.5–5 million for mid-sized sites. The carbon tax at €100/tonne makes the business case materially better but doesn't yet close it without grant support.
SEAI (Sustainable Energy Authority of Ireland) runs the primary grant schemes:
The SSRH is particularly under-utilised by Irish manufacturers. A biomass boiler replacing an oil boiler on a 2,000 kWh/day industrial site will receive a tariff that covers most of the capital cost over 7–10 years, with the carbon tax savings on top.
Ireland hypothecates carbon tax revenue — it is supposed to fund climate transition. In practice:
Businesses arguing against the carbon tax on grounds that it's pure extraction are technically wrong. The question is whether the recycled revenue reaches the right transformation.
The businesses that manage this best will have modelled it rather than absorbed it as a surprise. Practical steps:
1. Quantify your 2024–2030 carbon tax liability increase. Your energy bills contain carbon tax as a line item. Project it forward at the known schedule.
2. Evaluate fuel-switching economics now. At €100/tonne, the NPV of a fuel-switching project is materially better than at €56/tonne. Run the numbers with SEAI grant support factored in.
3. Use SSRH eligibility as a bankability test. If your site qualifies for SSRH, the payback period on fuel-switching falls to 5–8 years for most applications.
4. Consider energy audits under the EU Energy Efficiency Directive. Under S.I. 426 of 2014 (transposing EED), large energy users (>500 employees or >250 employees + above certain turnover) must conduct energy audits. Findings often surface 15–25% reduction opportunities.
5. Lock in supply contracts with energy cost escalators properly reflected. Multi-year supply contracts written in 2022–2023 that don't reflect carbon tax escalation are creating cost surprises for businesses in 2025–2026.
The €100 rate arrives in 2030 regardless of who is in government. Build it into your planning now.
Michael English is a technology entrepreneur and writer focused on blockchain infrastructure, carbon markets, and enterprise technology. He co-founded IMPT (impt.io), a carbon credit tokenisation platform, and BMIC (bmic.ai). Based in Ireland.