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In 2025, UK renewable energy hit a record 127 TWh, but emissions rose slightly due to increased gas use.
In 2025, Great Britain set a record for renewable electricity generation, producing over 127 terawatt hours, up from 119 TWh in 2024, driven by wind (over 85 TWh) and solar (over 18 TWh), with solar output boosted by the sunniest year on record and 250,000 new rooftop systems.
Despite renewables meeting at least half of daily demand on about one-third of days, fossil gas generation rose to 77 TWh, or 27% of supply, due to lower nuclear output, reduced imports, and higher demand from electric vehicles and data centers.
This led to a slight increase in emissions intensity to 126gCO2/kWh.
While the UK remains on track for its 2030 goal of 95% low-carbon electricity, experts warn current growth rates fall short of what’s needed to achieve 100% domestic clean power.
En 2025, la energía renovable del Reino Unido alcanzó un récord de 127 TWh, pero las emisiones aumentaron ligeramente debido al mayor uso de gas.