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  • Understanding AuctionsSearch ResultsComponent GroupingSortingMap ViewContact Us

    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 / BS10 / BS10 7SE

    Plot B at Severn Road Avonmouth BS10 7SE

    7.74 MW (Est from CMU)
    Total Capacity
    BS10 7SE
    Postcode
    16
    Components
    Active*
    2025-26
    Prequalified
    Prequalification
    * Latest auction year on record
    Descriptions:
    • Existing Generator Battery Energy Storage System
    • 15.000MW of Battery Energy Storage Systems
    • New Build Battery Energy Storage Systems
    Other Locations at This Postcode 10 locations
    Land Off Severn Road Hallen Bristol South Gloucestershire BS10 7SE
    Unknown FPC ELECTRIC LAND LIMITED3 components
    Plot C, Land at Severn Road Avonmouth BS10 7SE 25.50 MW
    Storage (Duration 2h) FPC (Ipswich) Limited4 components
    Plot A, Land at Severn Road, Avonmouth BS10 7SE, please see note in planning consent section
    OCGT and Reciprocating Engines (Fuel Type - Gas) Dockside Power Limited1 component
    Plot B Land at Severn Road Avonmouth BS10 7SE
    Reciprocating engines FPC INDUSTRY & ENTERPRISE 2 LIMITED1 component
    Plot B at Severn Road Avonmouth BS10 7SE
    DSR LIMEJUMP LTD6 components
    SEVERN ROAD, AVONMOUTH BS10 7SE
    Unknown UK Energy Reserve Limited2 components
    Severn Road, Avonmouth, BS10 7SE
    Reciprocating engines Dockside Power Limited1 component
    Plot A Land at Severn Road Avonmouth BS10 7SE 19.04 MW
    Reciprocating engines FPC INDUSTRY & ENTERPRISE 2 LIMITED4 components
    Plot A, Land at Severn Road, Avonmouth BS10 7SE. Please refer to note in planning consent section
    OCGT and Reciprocating Engines (Fuel Type - Gas) Dockside Power Limited2 components
    Plot C Land at Severn Road Avonmouth BS10 7SE 25.50 MW
    Storage (Duration 1h) FPC INDUSTRY & ENTERPRISE 2 LIMITED5 components

    CMU Registry Data

    CMU 25AVON
    1.364 Hallen Energy Ltd
    Prequalified (2)
  • ✓ Prequalified
  • ✓ Prequalified
  • 2025-26 2025-2028
    Capacity Information
    De-Rated Capacity
    1.364
    Connection/DSR Capacity
    10
    Anticipated Capacity
    1.364
    Max Obligation Period
    1
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    Existing Generating CMU
    Storage Facility
    Yes
    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
    Name of Applicant
    Company Name
    N/A
    Parent Company
    Voltalia SA
    Registered Holder
    Hallen Energy Ltd
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2025-25AVON-001
    Agreement Term
    1
    _id
    11901
    CMU ID
    25AVON
    Auction
    Capacity Auction
    Auction Name
    2025-26 (T-1) One Year Ahead Capacity Auction
    CM Unit Name
    NB_308
    Name of Applicant
    Hallen Energy Ltd
    Pre-Qualification Decision
    Prequalified
    Transmission / Distribution
    Distribution
    CMU confirmed entry into Auction
    Yes
    Secondary Trading Contact - Email
    Date of Issue of Capacity Agreement
    2025-03-31
    Auction Acquired Capacity Obligation
    1.364
    Secondary Trading Contact - Telephone
    '+4407824724323
    Duration of Capacity Agreement Awarded
    1
    Delivery Years for which Agreement Valid
    2025/2026
    Duration of Capacity Agreement in First Bidding Round
    1
    Auction Participation History
    2025-26T-12025-26 (T-1) One Year Ahead Capacity Auction
    1.36 MW Prequalified
    Component ID:Not available
    View Details: Location Page
    Capacity: 1.36 MW
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Primary Fuel of Component: Storage - Battery
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: Existing Generator Battery Energy Storage System
    2025-26T-12025-26 (T-1) One Year Ahead Capacity Auction
    1.36 MW Prequalified
    Component ID:Not available
    View Details: Location Page
    Capacity: 1.36 MW
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Primary Fuel of Component: Storage - Battery
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: Existing Generator Battery Energy Storage System
    CMU NB_308
    2.994 Hallen Energy Ltd
    Prequalified (2)
  • ✓ Prequalified
  • ✓ Prequalified
  • 2025-26 2022-2025
    Capacity Information
    De-Rated Capacity
    2.994
    Connection/DSR Capacity
    15
    Anticipated Capacity
    2.994
    Max Obligation Period
    15
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    New Build Generating CMU
    Storage Facility
    Yes
    Commercial Information
    Organization
    Name of Applicant
    Company Name
    N/A
    Parent Company
    Voltalia SA
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    No
    _id
    13195
    CMU ID
    NB_308
    Auction
    Capacity Auction
    Auction Name
    2025-26 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    NB_308
    Name of Applicant
    Hallen Energy Ltd
    Pre-Qualification Decision
    Prequalified
    Transmission / Distribution
    Distribution
    New Build Yet to Satisfy FCM
    Yes
    CMU confirmed entry into Auction
    Yes
    Secondary Trading Contact - Email
    Secondary Trading Contact - Telephone
    '+4407824724323
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2025-26T-42025-26 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID:Not available
    View Details: Location Page
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: 15.000MW of Battery Energy Storage Systems
    2022-23T-12022-23 (T-1) One Year Ahead Capacity Auction(4 components)
    Prequalified
    Component ID: 116654
    View Details: Component Page Location Page
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: 15.000MW of Battery Energy Storage Systems
    CMU AVON24
    1.134 Hallen Energy Ltd
    Prequalified
  • ✓ Prequalified
  • 2024-25
    Capacity Information
    De-Rated Capacity
    1.134
    Connection/DSR Capacity
    10
    Anticipated Capacity
    1.134
    Max Obligation Period
    1
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    Existing Generating CMU
    Storage Facility
    Yes
    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
    Name of Applicant
    Hallen Energy Ltd
    Company Name
    N/A
    Parent Company
    Voltalia SA
    Registered Holder
    Hallen Energy Ltd
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2024-AVON24-001
    Agreement Term
    1
    _id
    10472
    CMU ID
    AVON24
    Auction
    Capacity Auction
    Auction Name
    2024-25 (T-1) One Year Ahead Capacity Auction
    CM Unit Name
    NB_308
    Name of Applicant
    Hallen Energy Ltd
    Pre-Qualification Decision
    Prequalified
    Transmission / Distribution
    Distribution
    CMU confirmed entry into Auction
    Yes
    Secondary Trading Contact - Email
    [email protected]
    Date of Issue of Capacity Agreement
    2024-04-02
    Auction Acquired Capacity Obligation
    1.134
    Secondary Trading Contact - Telephone
    '+4407824724323
    Duration of Capacity Agreement Awarded
    1
    Delivery Years for which Agreement Valid
    2024/2025
    Duration of Capacity Agreement in First Bidding Round
    1
    Auction Participation History
    2024-25T-12024-25 (T-1) One Year Ahead Capacity Auction(2 components)
    5.02 MW Prequalified
    Component ID: 20560
    View Details: Component Page Location Page
    Capacity: 5.02 MW
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Primary Fuel of Component: Storage - Battery
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: New Build Battery Energy Storage Systems
    CMU NB_108
    3.716 Voltalia UK Ltd
    Prequalified (2)
  • ✓ Prequalified
  • ✓ Prequalified
  • 2024-25 2021-2024
    Capacity Information
    De-Rated Capacity
    3.716
    Connection/DSR Capacity
    15
    Anticipated Capacity
    3.716
    Max Obligation Period
    15
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    New Build Generating CMU
    Storage Facility
    Yes
    Commercial Information
    Organization
    Name of Applicant
    Voltalia UK Ltd
    Company Name
    N/A
    Parent Company
    Voltalia SA
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    No
    _id
    11600
    CMU ID
    NB_108
    Auction
    Capacity Auction
    Auction Name
    2024-25 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    NB_108
    Name of Applicant
    Voltalia UK Ltd
    Pre-Qualification Decision
    Prequalified
    Transmission / Distribution
    Distribution
    New Build Yet to Satisfy FCM
    Yes
    CMU confirmed entry into Auction
    Yes
    Secondary Trading Contact - Email
    [email protected]
    Secondary Trading Contact - Telephone
    '+447809714718
    Connection Agreement Deferral Declaration
    Yes
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2024-25T-42024-25 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID:Not available
    View Details: Location Page
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: 15MW of Battery Energy Storage Systems
    2021-22T-12021-22 (T-1) One Year Ahead Capacity Auction(4 components)
    Prequalified
    Component ID: 115186
    View Details: Component Page Location Page
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Generating Technology Class: Storage (Duration 1h)
    • Description of CMU Components: 15MW of Battery Energy Storage Systems
    CMU AVON02
    6.089 Hallen Energy Ltd
    Prequalified
  • ✓ Prequalified
  • 2021-22
    Capacity Information
    De-Rated Capacity
    6.089
    Connection/DSR Capacity
    16.71
    Anticipated Capacity
    16.339
    Max Obligation Period
    15
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    New Build Generating CMU
    Storage Facility
    Yes
    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
    Name of Applicant
    Hallen Energy Ltd
    Company Name
    N/A
    Parent Company
    Voltalia SA
    Registered Holder
    Hallen Energy Ltd
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2021-AVON02-001
    Agreement Term
    15
    _id
    5193
    CMU ID
    AVON02
    Auction
    Capacity Auction
    Auction Name
    2021-22 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    CMU AVON02
    Name of Applicant
    Hallen Energy Ltd
    Pre-Qualification Decision
    Prequalified
    Transmission / Distribution
    Distribution
    CMU confirmed entry into Auction
    Yes
    Secondary Trading Contact - Email
    [email protected]
    Date of Issue of Capacity Agreement
    2018-03-20
    Auction Acquired Capacity Obligation
    6.089
    Secondary Trading Contact - Telephone
    '+4407824724323
    Duration of Capacity Agreement Awarded
    15
    Delivery Years for which Agreement Valid
    2021/2022, 2022/2023, 2023/2024, 2024/2025, 2025/2026, 2026/2027, 2027/2028, 2028/2029, 2029/2030, 2030/2031, 2031/2032, 2032/2033, 2033/2034, 2034/2035, 2035/2036
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2021-22T-42021-22 (T-4) Four Year Ahead Capacity Auction(2 components)
    Prequalified
    Component ID: 13960
    View Details: Component Page Location Page
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: ST 543 812
    • Location and Post Code: Plot B at Severn Road Avonmouth BS10 7SE
    • Generating Technology Class: Storage
    • Description of CMU Components: The CMU will be formed of multiple individual Batteries. This site is to include a 17MW Battery Energy Storage System (BESS) that can either operate as import or export at will. The 17MW connection is to be provided at 33KV by installing an underground cable with a metering circuit breaker located at the customer's site.
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