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Glyn Rhonwy Pumped Storage Facility, Ffordd Clegir, Caernarfon, Gwynedd LL55 4EL Note: The site is currently brown field with no ability to receive post. As such this address uses the nearest current postcode. - 49.999 MW pumped storage facility in Gwynedd, North Wales.

Component ID: GRPH02
Last updated: 23 Jul 2025 03:10 UTC

Technical Capacity Information

Capacity Metrics
  • De-Rated Capacity (Component DB) N/A
  • De-Rated Capacity (CMU Registry) 47.32
  • Connection Capacity (CMU Registry) 50.00 MW
  • Anticipated Capacity (CMU Registry) 47.32 MW

Note: De-rated capacity typically accounts for availability factors. Connection capacity represents the maximum grid connection size. Values sourced from Component database or CMU Registry as indicated.

Contact & Ownership

Company Information
  • Applicant / Company Name Snowdonia Pumped Hydro Limited_
  • Parent Company (CMU Registry) Quarry Battery Company
  • Secondary Trading Email (CMU Registry) [email protected]
  • Secondary Trading Phone (CMU Registry) +447999552875

Field Value
_id 277581
Type T-4
rank 0.0573088
CMU ID GRPH02
Auction Name 2024-25 (T-4) Four Year Ahead Capacity Auction
Component ID 000002
Delivery Year 2024
De-Rated Capacity (empty)
OS Grid Reference SH 567 608
Location and Post Code Glyn Rhonwy Pumped Storage Facility, Ffordd Clegir, Caernarfon, Gwynedd LL55 4EL Note: The site is currently brown field with no ability to receive post. As such this address uses the nearest current postcode.
Connection / DSR Capacity (empty)
Primary Fuel of Component (empty)
Generating Technology Class Storage (Duration 7h)
Description of CMU Components 49.999 MW pumped storage facility in Gwynedd, North Wales.
Permitted on-Site Generating Unit (empty)
Pre-Refurbishing De-Rated Capacity (empty)
Post-Refurbishing De-Rated Capacity (empty)
Generating Capacity of on-site Generating Unit (empty)

Field Value
_id 11484
Type T-4
CMU ID GRPH02
Auction Capacity Auction
Agent Name (empty)
Beta Value (empty)
Auction Name 2024-25 (T-4) Four Year Ahead Capacity Auction
CM Unit Name GR2
CM Unit Type CMRS
TEC Deferral (empty)
Unproven DSR (empty)
Delivery Year 2024
Opt Out Status Opt-In
Opt-Out Reason (empty)
Parent Company Quarry Battery Company
DSR Test Method (empty)
Is FCM required (empty)
CM Unit Category New Build Generating CMU
Storage Facility Yes
De-Rated Capacity 47.319
Name of Applicant Snowdonia Pumped Hydro Limited_
Primary Fuel Type Storage - Pumped
Registered Holder (empty)
Annual Penalty Cap (empty)
Monthly Penalty Cap (empty)
Proven DSR Capacity (empty)
DSR Bidding Capacity (empty)
Amount of Credit Cover 473190
Termination Fee 1 Rate (empty)
Termination Fee 2 Rate (empty)
Termination Fee 3 Rate (empty)
Termination Fee 4 Rate (empty)
Termination Fee 5 Rate (empty)
Connection / DSR Capacity 49.999
Maximum Obligation Period 15
Capacity Agreement Awarded (empty)
Pre-Qualification Decision Not Prequalified
Capacity obligation Summary (empty)
Pre-Refurbishing CMU Status (empty)
Transmission / Distribution Distribution
Unique Agreement Identifier (empty)
New Build Yet to Satisfy FCM (empty)
Planning Consents Conditions (empty)
Anticipated De-Rated Capacity 47.319
Term of the Capacity Agreement (empty)
Nature of the Security Interest (empty)
CMU confirmed entry into Auction (empty)
Is Connection Agreement required (empty)
Pre-Refurbishment Bidding Status (empty)
Secondary Trading Contact - Email [email protected]
Date for provision of deferred TEC (empty)
Pre-Refurbishing De-Rated Capacity (empty)
Date of Issue of Capacity Agreement (empty)
List of Traded Capacity Obligations (empty)
Post-Refurbishing De-Rated Capacity (empty)
Auction Acquired Capacity Obligation (empty)
Date of Issue of DSR Test Certificate (empty)
Has Capacity Agreement been Suspended (empty)
Period for which the transfer applies (empty)
Secondary Trading Contact - Telephone '+447999552875
Capacity Agreement has been Terminated (empty)
Duration of Capacity Agreement Awarded (empty)
Date for Financial Commitment Milestone (empty)
Delivery Years for which Agreement Valid (empty)
Connection Agreement Deferral Declaration (empty)
Date of Termination of Capacity Agreement (empty)
Latest Date SCM is expected to be achieved (empty)
Subject to Substantial Completion Milestone (empty)
Subject to a Minimum Completion Requirement (empty)
Earliest Date SCM is expected to be achieved (empty)
Is copy of Grid Connection Agreement required (empty)
Anticipated Pre-Refurbishing De-Rated Capacity (empty)
Anticipated Post-Refurbishing De-Rated Capacity (empty)
Legal Name of any Person with a Security Interest (empty)
Date for provision of deferred Connection Agreement (empty)
Duration of Capacity Agreement in First Bidding Round (empty)
Long-Stop Date for the Minimum Completion Requirement (empty)