Explained, The System

A Day in the Life of the GridIllustrative data

Six technologies do not run side by side, they run as one machine. Drag through the day, or press play, and watch the interactions: wind filling the mountain reservoirs overnight, batteries eating the solar peak, water released into the morning rush. Then switch to the hard day, because a grid is judged by its worst evening, not its best afternoon.

Generation vs demand, GW
Stacked generation. Storage below the zero line is charging, negative demand on the system. The white line is national demand.
Storage state of charge, %
How full the tanks are. Pumped storage is the deep reserve, batteries the fast one.
06:00

Honesty notes. All figures are illustrative, shaped on real GB patterns but not a real dated day; the production version will use NESO half-hourly data for two named dates. Gas and imports are computed as the balancing residual, which is also how the real system works. Public GB fuel-mix data shows pumped storage generation but only partially resolves battery activity and pumping load; the production build will state exactly what is measured and what is estimated. State of charge is illustrative in both versions, fleet-wide SOC is not published.