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N84 Grid

Elstree Energy Storage

Developer as published, connection site, reference: ELSTREE BATTERY STORAGE LIMITED. Letchmore Heath 132kV Substation (NGET). PRO-003205.

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Capacity170 MWBattery storage, Gate 1
Connection date31 Jul 2030Status as printed: Scoping
First date seen 1 Oct 2029, difference +303 dayscalculated by N84
MW ahead in N84's order at this site0 MWcalculated by N84

Connection date, edition by edition

202920302031File dated 2026-09-11: connection date 2029-10-01Oct 2029File dated 2026-10-20: connection date 2030-07-31Jul 203011 Sep202620 Oct2026
202920302031File dated 2026-09-11: connection date 2029-10-01Oct 2029File dated 2026-10-20: connection date 2030-07-31Jul 203011 Sep202620 Oct2026

Each step is a file that printed the connection date differently from the file before it. Year marks on the side are 1 January.

Observed changes

Showing changes in files dated from 23 Sep 2026.

  1. 20 Oct 2026. MW Effective From printed as 31 Jul 2030 (previous file: 1 Oct 2029), 303 days later. N84 holds no copy between 11 Sep 2026 and 20 Oct 2026; this change happened at some point in that time. +303 dayscalculated by N84 Wide comparison Correction after an older file was importedReceipt: NESO TEC Register, file dated 20 Oct 2026, row 715Receipt: NESO TEC Register, file dated 11 Sep 2026, row 696

Supported by National Energy SO Open Data

Data as published by the named source on the stated date. N84 may contain matching or processing errors. Not investment, legal or technical advice. The official register prevails.