UK electricity generation share: wind
UK electricity generation share: wind stood at 34.01% on Oct 18, 2026, according to National Energy System Operator (NESO) data portal. It is one of the indicators in the Electricity system, daily table (Value · Daily), with a complete series running from Jul 31, 2025 to Oct 18, 2026. The complete series with an interactive chart, free to download.
This indicator in the Electricity system, daily table
| Indicator | 18-10-2026 | 17-10-2026 | 16-10-2026 | 15-10-2026 | 14-10-2026 | 13-10-2026 | 12-10-2026 | 11-10-2026 | 10-10-2026 | 09-10-2026 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Share of generation by fuel | |||||||||||
| Wind | 34.01 | 37.49 | 30.64 | 40.07 | 42.05 | 52.88 | 42 | 25.18 | 62.21 | 62.44 | |
| Gas | 15.3 | 7.59 | 21.47 | 21.19 | 19.25 | 15.5 | 23.98 | 21.54 | 10.59 | 8.6 |
Understanding UK electricity generation share: wind
The proportion of total daily electricity supplied to the Great Britain grid originating from onshore and offshore wind installations is expressed as a percentage. This metric aggregates metered output from both large transmission-connected wind farms and smaller distribution-networked turbines against total system generation. Unlike absolute megawatt-hour totals, this share indicator normalises production against fluctuating overall demand, isolating the relative contribution of wind resources within the energy mix.
Reading the series necessitates caution regarding meteorological volatility, as sudden weather fronts can cause extreme day-to-day swings that make period-on-period comparisons misleading. Seasonal patterns are pronounced, with stronger winter wind speeds generally yielding higher shares than summer months. Analysts should examine this metric alongside total system demand to determine whether a high percentage reflects surging wind output or a drop in baseline electricity consumption.
Frequently asked questions
- Does this percentage include unmetered small-scale wind turbines?
- Estimates for smaller distributed wind generators are incorporated through standardised profiling methodologies.
- Why can generation shares exceed one hundred percent in local regions?
- While calculated for Great Britain as a whole, regional wind output can occasionally surpass local demand, feeding into the wider transmission grid.
- Are curtailment events reflected in the share data?
- Curtailment instructions reduce actual generation output, which directly lowers the resulting percentage share for that day.