Ireland's solar power capacity has increased by almost 300 per cent in three years, according to figures published in a report by Solar Ireland. The Scale of Solar report indicates that Ireland had a total connected solar capacity which reached 2.7 GW by the end of May 2026, an increase of almost 300 per cent since 2023. The report shows that in the 12 months to the end of May solar generated more than 1.17 terawatt-hours of electricity across Ireland.