Britain's Electricity Generation - January 2026
Fuel Type Breakdown
Britain’s electricity generation in January 2026 was led by wind, which supplied 37% of the energy mix. This marks a strong rebound from the 27% recorded in January 2025 and represents the highest January contribution in the past five years. Wind outperformed gas by 6 percentage points, reinforcing its growing role as the backbone of winter electricity generation.
Gas accounted for 31% of electricity generation in January 2026, down from 38% in January 2025 but still reflecting its continued role in meeting peak winter demand. Despite the year-on-year decline, gas remained the second-largest source of generation during the month.
Electricity imports contributed 11% of the generation mix, slightly lower than January 2025 but broadly in line with recent winters. This continued reliance on imports highlights the importance of interconnectors in balancing domestic supply during periods of high demand.
Nuclear power supplied 10% of electricity, down from 12% in January 2025 and well below levels seen earlier in the decade. This ongoing reduction reflects the continued decline of nuclear electricity generation in Britain.
Biomass generation increased to 7%, up from 6% in January 2025, providing a stable source of dispatchable low-carbon power.
Solar generation contributed 2%, consistent with recent January levels and reflecting limited seasonal output.
Storage technologies supplied 2% of the mix, matching January 2025 and marking the joint-highest January contribution on record. This continued growth highlights the increasing importance of battery and storage assets in managing system flexibility.
Hydropower remained steady at 2%, consistent with recent January performance.
Coal remained absent from the generation mix, following its removal from Britain’s electricity generation in 2024.
Zero-Carbon Sources & Carbon Intensity
Zero-carbon sources, including wind, solar, nuclear and hydro, delivered 61% of Britain’s electricity in January 2026. This represents a significant improvement on January 2025’s 43% and the highest January share in the past five years.
Carbon intensity fell to 144 gCO₂/kWh, a notable reduction (14%) compared with 168 gCO₂/kWh in January 2025 and broadly in line with January 2023 levels. This improvement reflects the stronger contribution from wind, storage and biomass alongside reduced gas generation.
On a rolling 12-month basis, carbon intensity stood at 129 gCO₂/kWh, slightly higher than the previous rolling period but still well below historical averages. Meanwhile, the rolling 12-month average for zero-carbon generation increased to 57% (up by 6 percentage points), underlining continued long-term progress in decarbonising Britain’s electricity supply.
Concluding Remarks
January 2026 marked a strong start to the year for Britain’s electricity transition. Wind reclaimed its position as January's leading power source, following two years of gas-led January generation. Zero-carbon generation exceeded 60%, and carbon intensity fell sharply compared to the previous January.
However, gas continued to play a significant role in meeting winter demand, while nuclear output remained subdued, and imports continued to play a large role in supporting system balance. Sustaining progress through the remainder of the year will depend on maintaining high renewable output, accelerating storage deployment, and further reducing our reliance on fossil-fuel-sourced energy.
Britain's Electricity Summary Charts

Monthly Statistics
12-Month Rolling (Average) Statistics
To explore more insights, visit our interactive renewables map
here.
Data source: NESO 2026
(https://www.neso.energy/energy-101/great-britains-monthly-energy-stats)
About the Author
Doug is a specialist in carbon reporting and research, with extensive experience in supply chain emissions, regulatory compliance, renewable energy developments and sustainability performance improvement. He holds a Master’s degree in Green Economy, which underpins his ability to interpret complex environmental data and advise on practical, impactful strategies.
At edenseven, Doug leads the production of the firm’s monthly Britain’s Electricity Generation report, delivering clear, data-driven insights into the UK’s changing energy landscape. His work supports clients in understanding market trends, emissions performance, and opportunities for cleaner energy adoption.
Doug is a Registered Environmental Practitioner (REnvP) and an ISEP Practitioner, reflecting his professional standing and commitment to advancing sustainable practices across sectors.







