Summary
The week from Wednesday 26 August to Monday 31 August averaged about 23.2 GW of measured generation, with renewables averaging 41.5% of measured output. The strongest renewable day in the available data was Monday 31 August, when wind, solar and hydro together averaged 49.9% of measured generation. Gas was highest on Thursday 27 August and lowest on Monday 31 August.
For flexible electricity use, the cleanest opportunities are likely to appear when wind is strong, gas is low and demand is not at a peak. This is the foundation for future EV-charging guidance, clean-electricity alerts and weekly newsletter summaries.
The reporting period in key numbers
| Average measured generation | ~23.2 GW across available settlement-period aggregates |
|---|---|
| Average renewable share | 41.5% |
| Highest renewable share | 49.9% on Monday 31 August |
| Highest average wind output | ~8.4 GW on Wednesday 26 August |
| Highest average solar output | ~3.2 GW on Monday 31 August |
| Highest average gas output | ~8.3 GW on Thursday 27 August |
What the reporting-period figures show
- Renewables were strongest on Monday 31 August, when wind, solar and hydro averaged 49.9% of measured generation.
- Wind was the largest swing factor in the available feed, peaking at about 8.4 GW average output on Wednesday 26 August.
- Solar was strongest on Monday 31 August, averaging about 3.2 GW across settlement periods after embedded-solar backfill where needed.
- Gas averaged about 4.9 GW across the period, rising highest on Thursday 27 August and falling lowest on Monday 31 August.
- Measured generation was highest on Wednesday 26 August, at roughly 25.8 GW average output.
Renewable and gas comparisons — not carbon rankings
Best low-carbon proxy: Monday 31 August
Historical carbon-intensity aggregates are not yet part of this weekly report feed, so EnergyMix.info uses renewable share and gas output as cautious proxies. Monday 31 August had the strongest renewable share at 49.9%.
Lowest gas proxy: Monday 31 August
Gas generation averaged about 3.1 GW on Monday 31 August. Lower gas periods are often cleaner, but the report does not yet claim this was the lowest-carbon period without historical carbon-intensity validation.
Higher gas output — not a carbon measurement
Highest gas proxy: Thursday 27 August
Gas averaged about 8.3 GW on Thursday 27 August. Gas-heavy periods are usually higher-carbon, but this is labelled as a proxy until historical carbon-intensity highs/lows are added to the report feed.
Wind, solar and gas highlights
Wind
Highest average wind output was about 8.4 GW on Wednesday 26 August.
Solar
Highest average solar output was about 3.2 GW on Monday 31 August.
Gas
Highest average gas output was about 8.3 GW on Thursday 27 August; lowest was about 3.1 GW on Monday 31 August.
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Data notes
Compiled by Energy Mix from Elexon generation data and NESO embedded-generation estimates. Energy Mix calculates the totals, averages and comparisons shown here. Source data may be revised. Source attribution does not mean that Elexon or NESO has reviewed or endorsed this report.
Sources: Elexon Insights FUELHH; NESO Historic GB Generation Mix; NESO Demand Data Update. These datasets can share underlying observations; agreement is not independent certification.
Renewable-share and gas-output comparisons are not measurements of carbon intensity. See data sources and methodology for source information. A report-specific reproducible evidence pack was not preserved for this publication.
Original publication introduction and methodology note
A measured weekly report for EnergyMix.info using the available 7-day historical generation feed for Wednesday 26 August to Monday 31 August.
This report is generated from the available 7-day historical generation feed and validated against external public data. Carbon-intensity highs/lows and interconnector summaries should be treated as future additions unless they are present as validated historical aggregates.
Preserved as part of the original publication. Any broad validation wording in this note should not be read as proof that all reporting days or narrative claims were checked.
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