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Maentwrog Power Station Magnox Ltd Maentwrog nr Blaenau Ffestiniog Gwynedd LL414HY UK Map
Nuclear Decommissioning Authority Hydro CMU ID:NDAMAN

General Information

Key Details
  • Description Maentwrog hydroelectric station is a 30MW plant near Blaenau Ffestiniog- Gwynedd. The plant was constructed in 1928 features two 15MW units and takes its water feed from the Llyn Trawsfynydd Reservoir. The plant is restricted to the quantity of water it can use as minimum water levels must be maintained in the resevoir. The plant has a connection capacity of 35300kVA and an associated power factor of 0.85.
  • Auction 2020-21 (T-1) One Year Ahead Capacity Auction
  • Delivery Year 2020
Geocoding Status: Yes

Technical Capacity Information

Capacity Metrics
  • De-Rated Capacity (Component DB) N/A
  • De-Rated Capacity (CMU Registry) 24.48
  • Connection Capacity (CMU Registry) 28.41 MW
  • Anticipated Capacity (CMU Registry) N/A

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 Nuclear Decommissioning Authority
  • Parent Company (CMU Registry) N/A
  • Secondary Trading Email (CMU Registry) N/A
  • Secondary Trading Phone (CMU Registry) +441925802409

Field Value
_id 566671
Type T-1
rank 0.0573088
CMU ID NDAMAN
Auction Name 2020-21 (T-1) One Year Ahead Capacity Auction
Component ID E_MAEN-1
Delivery Year 2020
De-Rated Capacity (empty)
OS Grid Reference SH 653 395
Location and Post Code Maentwrog Power Station Magnox Ltd Maentwrog nr Blaenau Ffestiniog Gwynedd LL414HY UK
Connection / DSR Capacity (empty)
Primary Fuel of Component (empty)
Generating Technology Class Hydro
Description of CMU Components Maentwrog hydroelectric station is a 30MW plant near Blaenau Ffestiniog- Gwynedd. The plant was constructed in 1928 features two 15MW units and takes its water feed from the Llyn Trawsfynydd Reservoir. The plant is restricted to the quantity of water it can use as minimum water levels must be maintained in the resevoir. The plant has a connection capacity of 35300kVA and an associated power factor of 0.85.
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 629
Type T-1
CMU ID NDAMAN
Auction Capacity Auction
Agent Name (empty)
Beta Value (empty)
Auction Name 2017-18 (T-1) One Year Ahead Capacity Auction
CM Unit Name Maentwrog Hydro-electric Power Station
CM Unit Type CMRS
TEC Deferral (empty)
Unproven DSR (empty)
Delivery Year 2017
Opt Out Status Opt-In
Opt-Out Reason (empty)
Parent Company (empty)
DSR Test Method (empty)
Is FCM required (empty)
CM Unit Category Existing Generating CMU
Storage Facility No
De-Rated Capacity 24.478
Name of Applicant Nuclear Decommissioning Authority
Primary Fuel Type (empty)
Registered Holder Nuclear Decommissioning Authority
Annual Penalty Cap 1
Monthly Penalty Cap 2
Proven DSR Capacity (empty)
DSR Bidding Capacity (empty)
Amount of Credit Cover (empty)
Termination Fee 1 Rate £5000.00 /MW
Termination Fee 2 Rate £25000.00 /MW
Termination Fee 3 Rate £10000.00 /MW
Termination Fee 4 Rate £15000.00 /MW
Termination Fee 5 Rate £35000.00 /MW
Connection / DSR Capacity 28.41
Maximum Obligation Period 1
Capacity Agreement Awarded Yes
Pre-Qualification Decision Prequalified
Capacity obligation Summary (empty)
Pre-Refurbishing CMU Status (empty)
Transmission / Distribution Distribution
Unique Agreement Identifier CAN-2017-NDAMAN-001
New Build Yet to Satisfy FCM (empty)
Planning Consents Conditions (empty)
Anticipated De-Rated Capacity (empty)
Term of the Capacity Agreement 1
Nature of the Security Interest (empty)
CMU confirmed entry into Auction Yes
Is Connection Agreement required (empty)
Pre-Refurbishment Bidding Status (empty)
Secondary Trading Contact - Email (empty)
Date for provision of deferred TEC (empty)
Pre-Refurbishing De-Rated Capacity (empty)
Date of Issue of Capacity Agreement 2017-02-15
List of Traded Capacity Obligations (empty)
Post-Refurbishing De-Rated Capacity (empty)
Auction Acquired Capacity Obligation 24.478
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 '+441925802409
Capacity Agreement has been Terminated (empty)
Duration of Capacity Agreement Awarded 1
Date for Financial Commitment Milestone (empty)
Delivery Years for which Agreement Valid 2017/2018
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)