Dolgarrog

Dolgarrog is a 39 MW hydro and pumped storage project built and connected, connecting to the National Grid (England & Wales) network at Pentir GSP. The connection agreement is held by RWE Generation UK Plc.

Project stageOperating

Planning (completed)
Consented (completed)
Construction (completed)
Operating (current stage)
Closed (not yet reached)

Connection details

NESO project number: PRO-000123
Customer: RWE Generation UK Plc
Technology: Hydro
Total capacity: 39 MW
Already connected: 39 MW
Connection site: Pentir GSP
Transmission owner: National Grid (England & Wales)
Connection type: Embedded (connects through the local distribution network)
NESO project status: Built

Connection site

The marker shows the connection substation, not the project itself, with the transmission network around it.

Projects connecting near Pentir GSP · Grid map

Source: NESO Transmission Entry Capacity (TEC) register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem