Heatwave boosted solar supply to grid in July - EirGrid

Last month's heatwave in Ireland contributed to a boost in solar electricity supply to the national grid, according to EirGrid. However, the renewable share of the country's electricity mix only increased marginally year-on-year. Provisions indicate that grid-scale solar power accounted for 9.4% of Ireland's overall electricity mix in July, up from 8.2% in June and 5.7% in July 2025.

The surge in solar supply did not significantly alter the overall proportion of electricity sourced from renewables, which only climbed from 32% in July 2025 to 32.3%. Meanwhile, wind power's share in supply declined from 24.1% last year to 22.4% this July, while other renewable sources dropped year-on-year from 2.3% to 0.5%.

Gas remained the primary contributor to the country's electricity needs, supplying more than 43% of the monthly demand - a decrease from around 51% last year. Nearly 24% of the nation's electricity requirements were met through imports, compared to just over 15% in July 2025. EirGrid reported that the total electricity demand in July was 2,744 GWh, slightly lower than the 2,734 GWh consumed in the same month a year earlier.