Cwm Dyli

Cwm Dyli is an operational 9.9 MW hydro scheme in Gwynedd, generating since 1 January 1906. REPD does not record the planning grant date. Operator of record: RWE.

9.9 MW

Capacity

as recorded in REPD

Operational

Status

since 1 January 1906

Large Hydro

Technology

RWE

Gwynedd

Authority

Wales

Planning and build timeline

Application submitted	not recorded
Permission granted	not recorded
Operational	1 January 1906

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Other built sites within 15 km

Site	MW	Distance
Ffestiniog Pumped Storage Hydroelectricity · Operational	360	8.1 km
Dinorwig Pumped Storage Hydroelectricity · Operational	1728	10 km

How big is Cwm Dyli?

Cwm Dyli has a recorded installed capacity of 9.9 MW. That figure is the capacity registered in REPD, which is the scheme as consented — the metered output of a site can differ.

Who operates Cwm Dyli?

REPD records the operator as RWE. Ownership of built renewable assets changes hands regularly and REPD is published quarterly, so treat this as the operator of record rather than confirmation of who owns it today.

When was Cwm Dyli approved and built?

REPD does not record a submission date. REPD does not record a grant date. The site became operational on 1 January 1906.

Source: Renewable Energy Planning Database (REPD), Department for Energy Security and Net Zero, Open Government Licence v3.0, plus planning designation boundaries from planning.data.gov.uk (England only). REPD is published quarterly and covers schemes of roughly 150 kW and above. Capacity is the installed capacity on record, not metered generation. Operator is the operator of record at the last extract, not confirmation of present ownership. Reference 4882.

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