Aylesford

What it is

Who owns it and who trades it

How we know. Bess Holdco 2 Limited is held by IFM Master Holdco Limited, and IFM Master Holdco is itself held at three quarters or more by Zenobe Energy Limited. The Bess Holdco companies and Zenobe share one registered office at Burdett House. For the two units the register leaves blank, the capacity market holds Hill Farm Packington and Aylesford in Bess Holdco names at the same places.

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

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 the cleared price raised for inflation where the auction set a base period, split by month on EMRS's weights. Method

Outside the balancing mechanism

Elexon publishes no metered output for this battery. Its balancing registration, V__JZENO001, is a virtual unit registered by the company that trades it, and this site reads no meter for it, so nothing outside the balancing mechanism can be derived for it. We give it no estimate either. It was paid £81.00 per kilowatt a year in the response and reserve auctions, which means it spends most of its time held in those services rather than trading. The 4 batteries with a published meter that were paid £60 or more per kilowatt a year in the auctions made between −£15.34 and −£2.16 per kilowatt a year outside them, balancing included: they buy power only to cover their losses while they are held. Borrowing a figure from batteries that trade would overstate this one. Method

Where it stands

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. They run for about the same length of time. Same market, same rules, same weather.

See it on the map

Open the operating map here

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.