Brentwood
One physical site, registered with the market as 2 separate balancing units, 101 MW together in Essex and Kent. The market settles each unit on its own; this page adds them back up. Everything is read from published data for the 364 days to 28 August 2026.
The site
| Registered power, all units | 101 MW |
| Balancing units | 2 |
| Charging zone | Essex and Kent |
What the site earned, all units together
| Line | 364 days to 28 August 2026 |
|---|---|
| Balancing mechanism, paid to discharge | £133k |
| Balancing mechanism, paid out to charge | −£181k |
| Response and reserve auctions | £1.3m |
| Capacity market | £0 |
| Three measured lines together | £1.2m |
Income per kilowatt across the whole site: £14.11/kW/yr on the three measured lines, before charging costs and before wholesale trading, which nobody publishes. Each unit's own page carries its estimate and its percentiles.
The units
| Unit | MW | Discharge | Charge | Standing ready | CM |
|---|---|---|---|---|---|
| E_BRETB-1 ARENKO CLEANTECH LIMITED | 49 | £0 | — | £596k | — |
| E_BRETB-2 EDF Energy Customers Limited | 52 | £133k | −£181k | £692k | — |
Grouped on evidence, not on a name: shared unit code stem BRETB, all 2 units within 0.1 km. Portfolio families that share a code stem across distant sites, such as an aggregator's fleet, are never grouped. Methods