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Distribution / SPEN / Site

Cwm Dyli

RWE at Trawsfynydd

SPEN Embedded Capacity Register >1MW, September 2026 edition

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

Date connected
Not stated
Status
Connected
Customer
RWE
Site name
Cwm Dyli
Address
Nant Gwynant, Beddgelert, North Wales, LL55 4NW
Grid reference
Easting 265323, northing 353974
Licence area
Merseyside, Cheshire and North Wales (SPM)
Grid supply point
Trawsfynydd
Bulk supply point
FOUR CROSSES GT2 / MAENTWROG GT1 / MAENTWROG GT2
Primary substation
Not stated
Connection voltage
33 kV
Technology group
Storage
Energy source 1
Stored Energy, Storage - Mechanical - Pumped Hydro: 10.2 MW registered
Registered capacity
10.2 MW
Maximum export capacity
10.2 MW
Maximum import capacity
0 MW
Flexible connection
Not stated
In a connection queue
No
Date accepted
14 Feb 2020
Target energisation date
Not stated
Distribution reinforcement reference
Not published by SPEN
Transmission reinforcement reference
Not stated
Export MPAN
Not stated
Import MPAN
Not stated
Last updated
14 Sep 2020
Tracked since
March 2026 edition

Change history

Tracked since the March 2026 edition, across 7 editions.

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

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

Also at Trawsfynydd

GSP view

18 other sites at this grid supply point in the September 2026 edition. In all, the sites here total 144 MW: 93 MW connected, 51 MW accepted to connect.

See all 18

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