GDA

Software

GB Solved Grid

25 years of the GB grid solved for every second (2001–2026) — GridSim's full-history Newton–Raphson power flow. Pick a date and download exactly that day — the smallest useful slice, not one giant file.

Every second is a converged power‑flow solution: ~473 million solves, 100.0000% converged, voltages in band throughout, independently cross‑validated against pandapower to ~1e‑12 pu. Choose a UTC date below to download that whole day.

~473M
solves
100.0%
converged
2001–26
coverage
307
months on host
86,400
rows / day
One day → one CSV (~86,400 rows, a few MB). Available 2001-01-01 → 2026-07.

What you get

One row per second of the reduced 10-zone GB model — the converged operating point:

index, time_utc, load_factor, converged, iterations, max_mismatch, total_loss_mw, vmin_pu, vmax_pu

e.g. /download/gb/solves/day?date=2019-01-09 returns every second of 9 January 2019. Times are UTC; converged is True throughout the published record.

Bulk & full-UK

For the whole dataset, the compact per-second parquet and the full-UK 2227-bus half-hourly solve are on the GDA data lake. This page is for grabbing a single day without the full pull.