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Dinorwig: 1.8 GW Pumped storage | Grid

Dinorwig

Pumped storageOperational

Grid ID ast_62f4f4460895576b

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What is Dinorwig, and what is its status?

Pumped storage in North Wales, Merseyside and Cheshire. Details below come from the sources listed for each field.

MW

1800 MW

MWh

Not available

Nominal duration

Not available

Capacity basis

Counted DUKES megawatts

Location precision

Published, approximate

Location

Published, approximate

53.11861, -4.11389

Open in Map

Contains public sector information licensed under the Open Government Licence v3.0.

Contains public sector information licensed under the Open Government Licence v3.0.

Identity and relationships

  • REPD reference

    6839

    Dinorwig in REPD.

  • DUKES site

    HST-000128

    Dinorwig Power Station in DUKES.

  • Same site

    coordinates

    Same site in both registers, matched by coordinates (high). DUKES megawatts count. Distance 773 m.

Output

Grid does not have this data yet. It will appear here once Elexon BMU metering is added.

Ownership and operator

  • Operator · REPD

    First Hydro Company

    REPD records 6839 as the operator.

  • Operator · DUKES

    Engie Power

    DUKES records HST-000128 as the operator.

  • Owner · DUKES, REPD

    Not available

    The register records an operator, not an owner.

Related projects

  • Dinorwig

    REPD · 6839 · First Hydro Company · Wales · Conwy

  • Dinorwig Power Station

    DUKES · HST-000128 · Engie Power · Wales

Change history

  • May 2026

    30 Jul 2026 · DUKES · 1800 MW · Counted

  • REPD Q2 2026

    3 Aug 2026 · REPD · 1728 MW · Not counted

Source records