Clay Tye battery storage

Clay Tye is a 100 MW battery storage site near Upminster in east London, operated or mostly owned by FRV and Harmony Energy. Is it running right now? Its live output from Elexon, the GB electricity market's data service, and every half hour of the last week.

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About Clay Tye

Clay Tye is a battery storage site near Upminster in east London. It began operating in March 2024.

Its 100 MW of registered generating capacity is spread across 2 balancing mechanism units. Every half hour each unit tells the grid how much it will generate (its physical notification): that is the live figure above, and GridMonkey records it every half hour for the chart.

Battery stations charge when power is cheap and plentiful and discharge at the peaks, in seconds. Their output swings between charging and discharging through the day.

Clay Tye
Where Clay Tye is. From its REPD location. Map outline: Natural Earth.
TypeBattery storage
Registered capacity100 MW
Operational sinceMarch 2024 (REPD)
AreaLondon
LocationNear Upminster in east London
51.552° N, 0.294° E
Owner or operatorFRV and Harmony Energy
Elexon lead partyTesla Motors Limited
BM units E_CLAYB-1 50 MW, E_CLAYB-2 50 MW
Size16th largest of the 79 battery storage sites on GridMonkey's list

Other battery storage sites

Contains BMRS data © Elexon Limited copyright and database right 2026 (licence). Station names and owners or operators come from GridMonkey's own table, matched to the units in Elexon's register; a station's output here is its physical notification, not metered generation. Operational date, area and location: Renewable Energy Planning Database (REPD) (Department for Energy Security and Net Zero, July 2026). Contains public sector information licensed under the Open Government Licence v3.0.

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