Sundon battery storage

Sundon is a 50 MW battery storage site at Chalton, near Luton, in Bedfordshire. 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 Sundon

Sundon is a battery storage site at Chalton, near Luton, in Bedfordshire. It began operating in December 2025.

Its 50 MW of registered generating capacity is spread across one balancing mechanism unit. 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.

Sundon
Where Sundon is. From its REPD location. Map outline: Natural Earth.
TypeBattery storage
Registered capacity50 MW
Operational sinceDecember 2025 (REPD)
AreaBedfordshire
LocationAt Chalton, near Luton, in Bedfordshire
51.931° N, 0.499° W
Operator in REPDPivot Power (EDF) (REPD)
Elexon lead partyPivoted Power LLP
BM unit T_SUNDB-1 50 MW
Size52nd 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 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. Operator, 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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