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The living index — GB BESS revenue, month by month

Provisional — figures revise at settlement runs

Every figure on this page is computed on initial-settlement data on basis published-2026Q2 and revises at later settlement runs; the settled quarterly report is the record.

What this is: the CE GB BESS Index between quarterly reports — trailing-30-day and calendar-month revenue per MW for the behaviour-gated GB battery fleet, per stream and per duration class, computed by the published quarterly conventions on open Elexon & NESO records. What it is not: not the settled record (the quarterly report is), not a forecast and not an appraisal — to model a site forward, open the New Site appraisal in the app.

Basis published-2026Q2 — the quarterly index's published conventions with the behavioural gate computed on each point's own window; initial-settlement basis, refreshed at least monthly.

Loading the provisional series…

The monthly points

Settled vs provisional: the settled quarterly report is the record — this series is computed on initial-settlement data and revises at later settlement runs. Provisional points are never restated silently: each refresh re-emits the full series with its computation date, and the settled quarterly report supersedes this page.