What’s happening now
Today
How it’s changed today
No data available.
Drivers
What’s driving it
Last 6 hours
Top fuels + other
Stacked mix of the dominant fuels.
Interconnectors
Net imports and exports
Averaged across 5-minute samples per settlement period.
Above zero is net import. Below zero is net export.
Tip: hover for MW + %.
No data available.
Under the hood
Under the hood
Data source: —. Updated —.
No data available.
Grid Nerd Mode
Engineering detail, on demand
Turn on extra context, thresholds, and operational notes without cluttering the default view.
- Frequency control bands: highlighting primary and secondary response thresholds.
- Inertia context: explaining how synchronous generation smooths sudden changes.
- Ramp rate notes: why wind, solar, and thermal respond at different speeds.
- Operational callouts: when balancing margins tighten or widen.
Historical system summary
Loading history summary.
Dominant fuel
Which fuel usually leads generation
Monthly dominance patterns across the historical record.
Dominance uses monthly total MWh from settlement data. Ties resolve by fuel order when totals match.
Months with missing settlement periods appear muted or blank.
Year to date
How this year compares to normal
Settled days only, aligned to the same period last year.
Seasonal patterns
Typical generation mix by season
Shares are averaged across historical months.
Interesting system facts
Stable signals from the record
Facts appear only when confidence is high.
Curtailment snapshot
Wind curtailment signal
Accepted bid volumes that reduce wind output.
Methodology & caveats
Monthly aggregation highlights structural behaviour of the system rather than short term operational noise.
- Data sources: BMRS and NESO settlement feeds.
- Settlement-period aggregation uses 30 minute intervals.
- Missing or provisional periods are excluded from YTD and facts.
- Dominance reflects the highest total MWh within each period.