Cowley
South England · Battery · Operating
Physical capacity is not verified for all units. Utilisation and capacity-based outage ratios are unavailable; registry values are retained as reference.
Output history
Reported availability
Unit lifecycle and sources
| BM unit | Technology | Registered capacity | Current lifecycle |
|---|---|---|---|
| COWB-1 | Battery | 50 MW | Operating — dated evidence |
Sourced events
- 1 Nov 2021 · COWB-1
EDF’s project engineer confirms Cowley and Kemsley are operational. Cowley’s lithium-ion and flow-battery scope needs reconciliation before assigning a physical denominator; this event establishes operation only.
Source date: 2021-10-31 · Reviewed: 2026-09-13
Primary source (opens in a new tab)
Physical capacity evidence
Physical capacity evidence is incomplete. Registered totals are not verified installed capacity.
Whole-site registered total: 50.4 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
Cowley is a operating battery site in South England. It has 1 non-retired (0 unverified) and 0 retired mapped Balancing Mechanism unit, with 50 MW on the displayed capacity basis.
The source catalogue has no site coordinate, so the explorer shows a regional position rather than an exact location.
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.