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Distribution / SSEN / Site

50MW BESS

AVON UTILITIES AND GENERATION at LALEHAM

SSEN Embedded Capacity Register, September 2026 edition

Site, company and substation names are shown as they appear in the registers, including capitalisation.

Target energisation date
30 Dec 2037
Status
Accepted to connect
Customer
AVON UTILITIES AND GENERATION
Site name
50MW BESS
Address
LONG LANE, STANWELL, STAINES, SURREY, TW19 7AX
Grid reference
Easting 506825, northing 173940
Licence area
Southern England (SEPD)
Grid supply point
LALEHAM
Bulk supply point
STAINES
Primary substation
Not stated
Connection voltage
33 kV
Technology group
Solar
Energy source 1
SOLAR, PHOTOVOLTAIC: 50 MW registered
Registered capacity
50 MW
Change to maximum export capacity
50 MW
Change to maximum import capacity
0 MW
Flexible connection
Not stated
In a connection queue
Not published by SSEN
Date accepted
21 Dec 2021
Date connected
Not stated
Distribution reinforcement reference
Not published by SSEN
Transmission reinforcement reference
Not published by SSEN
Export MPAN
Not stated
Import MPAN
Not stated
Last updated
10 Feb 2026
Tracked since
August 2023 edition

Change history

Tracked since the August 2023 edition, across 38 editions.

Changes to its status, capacity, technology or customer, newest first.

No change to its status, capacity, technology or customer.

Also at LALEHAM

GSP view

10 other sites at this grid supply point in the September 2026 edition. In all, the sites here total 568 MW: 16 MW connected, 552 MW accepted to connect.

See all 10

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