Ireland's power system recorded its highest-ever level of solar electricity generation in June, with solar accounting for 8.2% of the country's electricity mix, according to new provisional data published by transmission system operator EirGrid.

The figure marks an increase from 7.8% in May and 5.3% in June 2025. Overall, 42% of Ireland's electricity was generated from renewable sources during the month.

Wind remained the largest renewable electricity source, contributing 30.7% of the overall fuel mix. Total wind generation reached 821 GWh during June.

According to EirGrid, gas-fired generation accounted for 40% of all electricity used during the month, while 17% of electricity was imported through interconnection.

Total electricity demand stood at 2,676 GWh in June, compared with 2,794 GWh in May.

Commenting on the figures, EirGrid System Operational Manager Charlie McGee said June was "yet another record month" for solar generation on Ireland's electricity system.

He said the result was expected given the sunny weather experienced during the month, but also reflected the progress made in integrating large grid-scale solar farms into the electricity network. McGee added that the achievement follows several other solar milestones recorded this year, including the system reaching more than 1 GW of electricity generated by grid-scale solar power at peak output.

Alongside balancing electricity supply and demand in real time, EirGrid is continuing to plan for Ireland's long-term electricity needs. The company recently published its new five-year Corporate Strategy, which includes "Transforming for Clean Energy" as one of its four strategic pillars.

Under this strategy, EirGrid aims to enable the power system to operate with up to 95% renewable electricity at any one time by 2030, increasing to 100% by 2035. The system currently has the capability to operate with up to 75% renewable generation at any given time.