Vitreous LabsEnergy transparency

Pulse Clean (HAB13-FFR)

21 MW, about 21 MWh (1 hour, from the capacity market de-rating class) in South Wales and Gloucester. Everything on this page is read from published data for the 364 days to 27 September 2026, or is labelled as an estimate.

What it is

Registered power21 MW response and reserve auction registration
Storage duration1 hour capacity market de-rating class
Charging zoneSouth Wales and Gloucester
Connection siteSwansea
PostcodeSA1 8NZ
Balancing mechanism unitnone found under the codes we search

Who owns it and who trades it

Traded byHABITAT ENERGY LIMITEDruns several sitesauction results, unchecked
Owned byPULSE CLEAN ENERGY UK LIMITED
Owner established fromcapacity market registered holder
UltimatelyPulse Clean Energy confirmed source

How we know. Pulse Clean Energy UK Limited was Green Frog Power 214 Limited until December 2021 and Pulse Clean Energy Limited was Green Frog Power Limited until January 2022. Both sit under Pulse Clean Energy Topco Limited.

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 is built from

Connection voltage132 kV matched to queue site: Future Swansea North 132kV

From published documents, not from any register: supplier and contractor project pages, owner announcements and the trade press. Confidence: confirmed (pipeline and ownership). Checked 2026-08-30. source 1 · source 2. Fields not shown are not published anywhere we have found, and we do not guess them.

What it earned

Line364 days to 27 September 2026
Balancing mechanismnot published
Response and reserve auctions auction implied£133k
Capacity market£136k
Three lines together£269k

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, 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: 15 units of about 1 hour in England and Wales, metered, earned between £3.49 and £26.07 per kilowatt a year with the balancing legs and the position outside the balancing mechanism together, £5.55 at the median. Applied to this unit's 21 MW that is £117k, in a range of £73k to £547k. An estimate from other batteries, never this one's figure. Method

Where it stands

All three measured lineswhole fleet, £/kW/yr25th percentile229 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. They run for about the same length of time. Same market, same rules, same weather.

BatteryMWHoursMeasured, per kW
Equinor Blandford Road231.5h£131.0/kW/yr
Willoughby201h£64.7/kW/yr
Gerrards Cross BESS201h£37.0/kW/yr
Feeder Road201.5h£35.8/kW/yr
Pulse Clean (HAB12-FFR)211h£17.4/kW/yr
Pulse Clean (HAB13-FFR)this battery211h£12.8/kW/yr

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.