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    Search Guide

    This registry provides comprehensive search capabilities across all Capacity Market components:

    • Company Search: Enter a company name (e.g., "Drax", "EDF") to see all their components
    • Location Search: Search by city, region, or postcode (e.g., "Manchester", "SW1")
    • CMU ID Search: Enter a specific CMU ID to find exact components
    • Technology Search: Enter technology types like "Hydro", "OCGT", or "Battery"

    The search is intelligent and will try to determine what you're looking for based on your query.

    You can combine search terms to narrow results, such as "London Battery" to find battery storage in London.

    Searches are not case-sensitive, and partial matches are supported (e.g., "Manch" will find "Manchester").

    Understanding Auctions

    The Capacity Market runs regular auctions where providers compete to secure agreements. There are two main types:

    • T-4 auctions: Held 4 years ahead of the delivery year
    • T-1 auctions: Held 1 year ahead to fine-tune capacity requirements

    Each auction results in agreements that specify how much capacity providers must deliver and the payment they'll receive.

    Auction years are displayed as badges (e.g., 2023-24) that you can click to view details for that specific auction year.

    The Capacity Market ensures the UK has sufficient electricity supply during periods of high demand or system stress.

    Providers receive payments for ensuring their capacity is available, creating a more stable and resilient electricity market.

    Search Results

    Search results are grouped by location and show important details about each component:

    • Active Components with auction years 2024-25 or later
    • In-Active Components with only auction years before 2024-25
    • Company Name Click to view all components for this company
    • Technology Click to search for this technology type
    • CMU: XXX Click to search for this CMU ID
    • Auction Year Click to view details for this specific auction

    Each result shows the component's capacity, location details, and participation in specific auction years.

    You can sort results by relevance, location, or date using the sort options.

    Pagination controls appear at the bottom when there are multiple pages of results.

    Component Grouping

    Components at the same location with the same description are grouped together to reduce duplication.

    Each group shows:

    • All CMU IDs for components at that location
    • All auction years, sorted with newest first
    • An Active/Inactive status based on auction years

    Grouping helps identify multi-year contracts and related components at the same site.

    The total capacity shown combines all components in the group.

    Components can be expanded to show individual details by clicking the expand icon.

    Sorting and Filtering

    You can sort search results by:

    • Relevance: Most relevant matches first
    • Location: Alphabetical order by location name
    • Date: By auction year (newest or oldest first)
    • Capacity: Highest or lowest capacity first

    Click the column headers to change sort order.

    You can filter results using the search refinements at the top of the results page:

    • Filter by technology type (e.g., only show batteries)
    • Filter by active status (show only active or inactive components)
    • Filter by auction year (show only components from specific auctions)

    Map Explorer & Map View

    We provide two map-based tools for exploring capacity market data:

    Map Explorer

    The Map Explorer is our advanced interactive mapping tool, specifically designed for comprehensive data exploration with:

    • Mobile-Optimized Interface: Responsive design that works perfectly on phones and tablets
    • Advanced Filtering: Filter by technology type, company, delivery year, and active status
    • Smart Sidebar: Desktop users get a dedicated filter panel, mobile users get collapsible filters
    • Full-Screen Map: Maximizes map space for detailed geographical analysis
    Search Map View

    The Search Map View combines search functionality with map visualization, offering:

    • Search-First Approach: Start with text searches, then visualize results on the map
    • Integrated Results: Search results and map display work together
    • Performance Optimized: Streamlined for fast search result mapping

    Both tools provide a visual representation of capacity distribution across the UK, but serve different exploration needs.

    Map Features:
    • Technology Colors: Different technology types are shown with distinct colors on the map for easy identification:
      GasDSRNuclearCHPSolarWind
      BatteryBiomassHydroInterconnectorCoalOther
    • Technology Legend: The map legend shows all available technologies with their corresponding colors and component counts
    • Search Results on Map: You can view any search results on the map by clicking "View on Map" from search results pages
    • Smart Clustering: Areas with multiple components are automatically grouped into clusters - click clusters to zoom in and see individual components
    • Interactive Markers: Click on individual markers to see detailed information about components at that location

    Use the map controls to zoom in on specific regions or areas of interest. The map automatically adjusts clustering based on your zoom level to provide the clearest view of capacity distribution.

    Contact Us

    We're here to help with any questions about the Capacity Market Registry.

    Email

    For general inquiries and support:

    For LLMs

    Complete programmatic access guide for LLMs:

    Search / All Locations / All Postcodes / NP18 / NP18 2BZ

    Severn Power Station West Nash Road Nash Newport Gwent NP18 2BZ

    No capacity
    Total Capacity
    NP18 2BZ
    Postcode
    2
    Components
    Active*
    2025-26 (T-4)
    Rejected
    Prequalification
    * Latest auction year on record
    Descriptions:
    • Refurbishment of existing plant
    • Existing CCGT that is to be refurbished
    Auction Status:
    Active2027-28
    Other Locations at This Postcode 6 locations
    Severn Power Station West Nash Road Nash Newport NP18 2BZ 773.08 MW
    Combined Cycle Gas Turbine (CCGT) SEVERN POWER LIMITED17 components
    Severn Power Station West Nash Road Newport NP18 2BZ
    Combined Cycle Gas Turbine (CCGT) SEVERN POWER LIMITED9 components
    Uskmouth Power Station, West Nash Road, Nash, Newport, Gwent NP18 2BZ
    Unknown SIMEC USKMOUTH POWER LIMITED11 components
    Uskmouth Power Station, West Nash Road, Newport, NP18 2BZ 16.12 MW
    Storage (Duration 2h) E.ON UK BATTERY STORAGE SYSTEMS LIMITED2 components
    Simec Uskmouth Power Limited West Nash Road Nash Newport NP18 2BZ
    Energy from Waste SIMEC USKMOUTH POWER LIMITED1 component
    Uskmouth Power Station West Nash Road, Nash, Newport, Wales, NP18 2BZ 20.10 MW
    Storage (Duration 2h) AW1 ENERGY STORAGE LIMITED1 component
    Secondary Trading Contacts
    SEVERN POWER LIMITED:

    CMU Registry Data

    CMU 27SV00
    Calon Energy (Severn) …
    Prequalified
  • ✓ Prequalified
  • 2027-28
    Capacity Information
    Connection/DSR Capacity
    850
    Max Obligation Period
    15
    Unit Information
    CMU Type
    CMRS
    Primary Fuel
    Gas
    Category
    Refurbishing Generating CMU
    Storage Facility
    No
    Commercial Information
    Termination Fee Rate 1
    £5000.00 /MW
    Termination Fee Rate 2
    £25000.00 /MW
    Termination Fee Rate 3
    £10000.00 /MW
    Termination Fee Rate 4
    £15000.00 /MW
    Termination Fee Rate 5
    £35000.00 /MW
    Annual Penalty Cap
    1
    Monthly Penalty Cap
    2
    Organization
    Company Name
    N/A
    Parent Company
    Calon Energy (Severn) Limited
    Registered Holder
    SEVERN POWER LIMITED
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2027-27SV00-001
    Agreement Term
    1
    _id
    14214
    CMU ID
    27SV00
    Auction
    Capacity Auction
    Auction Name
    2027-28 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Severn Unit 20
    Is FCM required
    Yes
    Name of Applicant
    SEVERN POWER LIMITED
    Pre-Qualification Decision
    Prequalified
    Pre-Refurbishing CMU Status
    Opt-In
    Transmission / Distribution
    Transmission
    New Build Yet to Satisfy FCM
    Yes
    CMU confirmed entry into Auction
    Yes
    Pre-Refurbishment Bidding Status
    Pre-Refurbishing Only
    Secondary Trading Contact - Email
    Pre-Refurbishing De-Rated Capacity
    778.515
    Date of Issue of Capacity Agreement
    2024-04-08
    Post-Refurbishing De-Rated Capacity
    778.515
    Auction Acquired Capacity Obligation
    778.515
    Secondary Trading Contact - Telephone
    '+4401633530166
    Duration of Capacity Agreement Awarded
    1
    Date for Financial Commitment Milestone
    2025-07-11
    Delivery Years for which Agreement Valid
    2027/2028
    Latest Date SCM is expected to be achieved
    2027-09-30
    Subject to Substantial Completion Milestone
    Yes
    Subject to a Minimum Completion Requirement
    Yes
    Earliest Date SCM is expected to be achieved
    2026-08-31
    Anticipated Pre-Refurbishing De-Rated Capacity
    778.515
    Anticipated Post-Refurbishing De-Rated Capacity
    778.515
    Duration of Capacity Agreement in First Bidding Round
    1
    Auction Participation History
    2027-28T-42027-28 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID: 1557
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 325 836
    • Location and Post Code: Severn Power Station West Nash Road Nash Newport Gwent NP18 2BZ
    • Primary Fuel of Component: Gas
    • Generating Technology Class: Combined Cycle Gas Turbine (CCGT)
    • Description of CMU Components: Refurbishment of existing plant
    CMU SV2021
    Calon Energy (Severn) …
    Rejected
  • ✗ Rejected
  • 2025-26
    Capacity Information
    Connection/DSR Capacity
    850
    Max Obligation Period
    15
    Unit Information
    CMU Type
    CMRS
    Primary Fuel
    Gas
    Category
    Refurbishing Generating CMU
    Storage Facility
    No
    Commercial Information
    Organization
    Company Name
    N/A
    Parent Company
    Calon Energy (Severn) Limited
    Opt Out Status
    Opt-In
    Agreement Details
    _id
    13203
    CMU ID
    SV2021
    Auction
    Capacity Auction
    Auction Name
    2025-26 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Severn Unit 1 and 2
    Name of Applicant
    SEVERN POWER LIMITED
    Pre-Qualification Decision
    Rejected
    Pre-Refurbishing CMU Status
    Opt-Out
    Transmission / Distribution
    Transmission
    Secondary Trading Contact - Email
    Pre-Refurbishing De-Rated Capacity
    772.82
    Post-Refurbishing De-Rated Capacity
    772.82
    Secondary Trading Contact - Telephone
    '+4401633530166
    Anticipated Pre-Refurbishing De-Rated Capacity
    772.82
    Anticipated Post-Refurbishing De-Rated Capacity
    772.82
    Auction Participation History
    2025-26T-42025-26 (T-4) Four Year Ahead Capacity Auction
    Rejected
    Component ID: 220122
    Status: Rejected
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 325 836
    • Location and Post Code: Severn Power Station West Nash Road Nash Newport Gwent NP18 2BZ
    • Generating Technology Class: Combined Cycle Gas Turbine (CCGT)
    • Description of CMU Components: Existing CCGT that is to be refurbished
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