Byers Brae (EDF01N)

What it is

Who owns it and who trades it

How we know. The registered office of each company names Gresham House Asset Management, read company by company on 31 August 2026. The address alone would not settle it, because 875 companies sit at 5 New Street Square; the care of line naming the manager is the discriminator.

Market registers name the party that sells into the market, which for a battery is usually an optimiser under contract rather than the owner. Elexon's balancing mechanism unit register names the seller here and the name is checked against it on every build. How we tell them apart

Before 31 March 2025 this battery sold as NFSE02 under F & S Energy Ltd. The handover shows in the register as a new code, not a renaming, and the old page keeps its record.

Until 19 August 2026 this battery sold as BYBRB-1 under OCTOPUS ENERGY TRADING LIMITED, taking £113k inside this page's year. The handover shows in the register as a new code, not a renaming, and the old page keeps its record.

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, derived from the meter

Elexon publishes what this unit's meter recorded every half hour. Take away the balancing volumes NESO accepted and what is left is the position the unit ran outside the balancing mechanism: its wholesale trading, its response and reserve delivery, and its losses, together. That position is valued here at the market index for each half hour. The volumes are measured. The price is a public benchmark, not this unit's trade. The product is derived, and is shown apart from the three measured lines above. 59 days to 12 September 2026, 37 of them still provisional in Elexon's settlement runs. Method and caveats

Checks this unit did not pass cleanly. Published anyway, because a flagged figure with its flag is more use than a blank.

• only 59 of 364 days metered
• returns only 0% of what it takes in, with 0 MWh exported all year, about 0 full power hours: a unit that barely cycles, where its own standing consumption and losses dominate a small throughput
• the meter exceeded the 28.0 MW registration on 16 days between 2026-07-28 and 2026-09-12, peaking at 0 MW export and 187 MW import: more than this battery can do, so another asset on the same meter, a commissioning period, or a settlement run error

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 Scotland, 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.