Ireland’s energy transition is producing results, but not at the pace the law demands. The Sustainable Energy Authority of Ireland published Energy in Ireland 2025 on 17 December 2025, the definitive account of the country’s energy trajectory. Emissions fell by 16 per cent from 2018 to 2024 despite 10 per cent population growth and an 18 per cent rise in electricity demand. For green sector executives, the data identifies where Ireland is accelerating and where the commercial opportunity for faster action is greatest.

The report’s message is constructive but direct: current progress is insufficient. Emissions are falling at 2.7 per cent per year, but legally binding 2030 targets require reductions exceeding 5 per cent annually. SEAI Chief Executive William Walsh noted Ireland has not yet broken the structural link between economic growth and fossil fuels. The three sectors defining the acceleration opportunity are electricity, heat and transport.

Electricity is the standout success and model for what is achievable. Solar PV generation rose 69 per cent in 2024, wind supplied 41.8 per cent of gross electricity, and fossil generation fell to its lowest share on record. Ireland crossed 8 gigawatts of installed renewable capacity in March 2026. Electricity emissions are now down 32 per cent since 2018, demonstrating that rapid decarbonisation is achievable when policy, investment and infrastructure align.

Heat remains the sector with the largest structural gap. In 2024, 89.8 per cent of heat demand was met by fossil fuels, and heat accounts for 39.8 per cent of total energy emissions. Heat pumps delivered more renewable energy than all solar farms and rooftop panels combined, but the 400,000 retrofit target by 2030 requires sustained acceleration. The €568 million allocated in Budget 2026 for energy efficiency provides the foundation; execution at county level is the remaining challenge.

Transport accounts for 37.7 per cent of energy emissions. Despite a 5.3 per cent reduction since 2018, the average annual fall of 0.9 per cent is well below what 2030 requires. EV sales rose 48.7 per cent in January 2026, but road freight, aviation and shipping remain almost entirely fossil-dependent. The biofuel blending programme, covering 8.5 per cent of road diesel in 2024, provides near-term abatement while electrification infrastructure scales.

Three actions would materially accelerate the transition. First, the National Retrofit Programme should establish county-level delivery targets with defined timelines, moving from aggregate reporting to accountability enabling faster course correction. Second, grid-scale battery storage should be prioritised alongside wind and solar to reduce curtailment and improve renewable investment returns. Third, the commercial heat sector needs a dedicated decarbonisation pathway, particularly for district heating and industrial process heat.

Energy in Ireland 2025 is an honest reckoning with a transition that is working but not yet fast enough. Globally, countries that move fastest on heat and transport decarbonisation will capture the greatest industrial and competitive advantage. Ireland has the policy architecture, the renewable resource base and the statutory framework. The question the SEAI’s data poses is whether delivery pace can double before the 2030 window closes.

(The views expressed by the writer are his/her own and do not necessarily reflect the views or positions of BusinessRiver.)