Ellesmere Port
19 MW in North Midlands and North Wales. Everything on this page is read from published data for the 364 days to 22 September 2026, or is labelled as an estimate.
What it is
| Registered power | 19 MW response and reserve auction registration |
| Charging zone | North Midlands and North Wales |
| Connection site | Cheshire West and Chester |
| Postcode | CH65 |
| Balancing mechanism unit | none found under the codes we search |
Who owns it and who trades it
| Traded by | UK POWER RESERVE LIMITEDruns several sitesauction results, unchecked |
| Owned by | not published anywhere we can read |
| Ultimately | Sembcorp (UK Power Reserve) named source |
How we know. The register names no owner for these four. AFFR is UK Power Reserve's own unit prefix, the company is the lead party on all five AFFR units, and the register names it as owner of the fifth.
Market registers name the party that sells into the market, which for a battery is usually an optimiser under contract rather than the owner. This unit is registered only in the response and reserve auctions, so the seller is the participant NESO's auction results name, and Elexon's register carries no entry to check it against. How we tell them apart
What it earned
| Line | 364 days to 22 September 2026 |
|---|---|
| Balancing mechanism | not published |
| Response and reserve auctions auction implied | £0 |
| Capacity market | no agreement we can attach |
| Three lines together | £0 |
Balancing is offer revenue and does not net off the cost of the power. The response and reserve figure is the value implied by the published auction results, award quantity times clearing price times the length of the delivery window, and not a settled payment. Capacity market income is at the price the agreement cleared at, before inflation uprating, so it is a floor. Method
Outside the balancing mechanism, estimated from metered peers
Elexon publishes no metered output for this registration, an auction unit rather than a balancing mechanism unit, so nothing can be derived for it. What can be said is what its peers did: 8 units of about unknown hours in England and Wales, metered, earned between £-10.51 and £4.00 per kilowatt a year with the balancing legs and the position outside the balancing mechanism together, £2.10 at the median. Applied to this unit's 19 MW that is £40k, in a range of −£200k to £76k. An estimate from other batteries, never this one's figure. Method
Where it stands
| All three measured lineswhole fleet, £/kW/yr | 2nd percentile199 units |
Percentiles, so 90 means better than nine in ten of the cohort named beside it, on that measure alone, over the same 364 days. Rates are pounds per kilowatt per year, annualised over the days the unit has been on the system, the same figures the performance league ranks on. A high position in the taken-in table is not a fault: a constraint asset is paid to charge, and charging is its job.
The nearest comparables
The five nearest in size in England and Wales, and this battery among them, ranked by what each was paid for every kilowatt it holds over the 364 days to the same date. How long this battery can run for is not published, so duration is not used to choose them. Same market, same rules, same weather.
| Battery | MW | Hours | Measured, per kW |
|---|---|---|---|
| ZEN02A | 20 | not known | £85.2/kW/yr |
| Farnham BESS | 20 | 2h | £43.7/kW/yr |
| Swindon | 19 | 2h | £43.5/kW/yr |
| Winchester (WNCHB-1) | 19 | 2h | £37.9/kW/yr |
| Ernesettle | 19 | 1h | £16.3/kW/yr |
| Ellesmere Portthis battery | 19 | not known | £0.0/kW/yr |
Why every line reads zero
This registration has never appeared with an award or an acceptance in any market we read. That is the whole public record.
A quiet registration is not proof of a quiet battery: a site whose trading runs through an aggregator or a supplier appears under their identity, not its own, and publishes nothing per site.
See it on the map
Every figure on this page traces to a published file. If something here is wrong about your asset, the methods section says how to tell us.