In June 2026, solar supplied 25% of the European Union's electricity, overtaking nuclear for the month. Energy think tank Ember confirmed the figure directly: 52 terawatt-hours of solar generation, a genuine record share.

The one correction worth making: some coverage described this as solar beating nuclear "for the first time." It isn't, solar had already edged past nuclear in June 2025 and again in May 2026. What's genuinely new is solar clearing the 25% mark specifically, not the act of beating nuclear itself.

Worth noting too: June 2026 included a summer heatwave, which pushed up both electricity demand and solar output at the same time, a real factor in how the record was set, not a reason to discount it.

The bottom line: this is a real, well-sourced milestone. Just be precise about which "first" is being claimed, the 25% share, not the act of overtaking nuclear.