Amps to kVA

Frequency is from Elexon FREQ, using timestamped 15-second readings. This panel refreshes every 30 seconds while the Grid live tab is visible. Delayed readings are flagged.

The frequency chart shows only NESO’s tighter 49.8–50.2 Hz normal operating band, with a 50 Hz reference. Wider steady-state bands are omitted. Fault-related excursions are assessed under separate standards. This panel does not constitute an event-compliance assessment.

NESO frequency bands

Elexon rolling system demand: five-minute average MW, derived from generation and imports supplying the GB transmission system. Refreshes every minute while this tab is open. This is transmission demand, rather than total demand including embedded generation.

The latest pie uses Elexon’s current fuel-type report, with imports grouped together. Negative flows are excluded. Embedded solar is not included. Latest timestamps are displayed; delayed data is flagged.

History uses five-minute readings up to 24 hours, hourly readings for one week and one month, and daily means of hourly readings for twelve months, five years and ten years. Older intervals can be missing; daily means use the available readings and unfilled gaps remain visible. The 12-month, 5-year and 10-year traces use the same rolling-demand series.

The 20-year view uses NESO’s half-hourly transmission-demand series, averaged daily. This is a different published series from Elexon rolling demand. Only records marked as actuals are included where NESO supplies that flag.

Source: Elexon Insights · NESO historic demand