Marchwood

South England · Gas · Operating

Lifecycle

Operating

Declared output

—

Sourced installed capacity

898 MW

Declared utilisation

—

Output history

Reported availability

REMIT unavailability affecting this station over the last 12 months.

Unit lifecycle and sources

Effective-dated status is applied before station capacity and technology are calculated.

BM unit	Technology	Registered capacity	Current lifecycle
MRWD-1	Gas	920 MW	Operating — dated evidence

Sourced events

1 Jun 2026 · MRWD-1
DESNZ DUKES 5.11, '5.11 Full list', row 667, lists Marchwood Power as operational at end May 2026 with 898 MW installed. Named generating plant; sole mapped generation BMU. Evidence starts on the next complete UTC day after the inventory snapshot; this is not a commissioning date. Government-reported precision is retained; the 920 MW registry reference remains separate.
Source date: 2026-07-30 · Reviewed: 2026-09-13
Primary source (opens in a new tab)

Physical capacity evidence

MRWD-1 · 898 MW · evidenced from 2026-06-01

DESNZ DUKES 5.11, '5.11 Full list', row 667, lists Marchwood Power as operational at end May 2026 with 898 MW installed. Named generating plant; sole mapped generation BMU. Evidence starts on the next complete UTC day after the inventory snapshot; this is not a commissioning date. Government-reported precision is retained; the 920 MW registry reference remains separate.

Source 2026-07-30 · reviewed 2026-09-13

Operator capacity source

Whole-site registered total: 920 MW, including retired units.

Registered capacity is the value retained in the committed BM-unit source snapshot. “Not retained” means the registry no longer supplied a positive figure; it does not mean the unit historically had no capacity. If a unit with a retirement event publishes a non-zero live declaration, the live declaration keeps it in the operating fleet pending review.

About this asset

Marchwood is a operating gas site in South England. It has 1 non-retired (0 unverified) and 0 retired mapped Balancing Mechanism unit, with 898 MW on the displayed capacity basis.

Published site coordinate.

Current output is the operator’s declared Physical Notification. Metered output is published later and is shown as the solid portion of the history chart; outage shading comes from REMIT notices.