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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 / NN7 / NN7 1JW_2

    LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).

    8.98 MW
    Total Capacity
    NN7 1JW
    Postcode
    11
    Components
    Prequalified
    Prequalification
    * Latest auction year on record
    Descriptions:
    • Battery Storage Plant
    Trading Contacts:
    Other Locations at This Postcode 2 locations
    Grendon Lakes, Main Road, Grendon, Northampton, Northamptonshire NN7 1JW. 20.22 MW
    Storage (Duration 1h) GRENDON LAKES STORAGE LIMITED4 components
    Land on the West side of Main Road, Grendon, Northampton, NN7 1JW (Nearest postcode to grid reference: NN7 1JB). 12.22 MW
    Storage (Duration 2h) GRENDON STORAGE LIMITED1 component

    CMU Registry Data

    CMU SEL084
    24.305 GRENDON STORAGE LIMITED
    Prequalified (2)
  • ✓ Prequalified
  • ✓ Prequalified
  • 2026-27 2024-2026
    Capacity Information
    De-Rated Capacity
    24.305
    Connection/DSR Capacity
    49.99
    Anticipated Capacity
    24.305
    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
    Company Name
    N/A
    Parent Company
    Gresham House Energy Storage Holdings Plc
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    No
    _id
    11713
    CMU ID
    SEL084
    Auction
    Capacity Auction
    Auction Name
    2024-25 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage 043
    Name of Applicant
    GRENDON STORAGE LIMITED
    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
    '+4407849085009
    Connection Agreement Deferral Declaration
    Yes
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2026-27T-42026-27 (T-4) Four Year Ahead Capacity Auction
    8.98 MW Prequalified
    Component ID: 291874
    Capacity: 8.98 MW
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • De-Rated Capacity: 8.979
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Connection / DSR Capacity: 38
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    2024-25T-42024-25 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID: 63907
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    CMU SEL105
    9.931 GRENDON STORAGE LIMITED
    Prequalified
  • ✓ Not Prequalified
  • 2025-26
    Capacity Information
    De-Rated Capacity
    9.931
    Connection/DSR Capacity
    24.995
    Anticipated Capacity
    9.931
    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
    Company Name
    N/A
    Parent Company
    Gresham House Energy Storage Holdings Plc
    Opt Out Status
    Opt-In
    Agreement Details
    _id
    13168
    CMU ID
    SEL105
    Auction
    Capacity Auction
    Auction Name
    2025-26 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage Limited
    Name of Applicant
    GRENDON STORAGE LIMITED
    Pre-Qualification Decision
    Not Prequalified
    Transmission / Distribution
    Distribution
    Secondary Trading Contact - Email
    Secondary Trading Contact - Telephone
    '+4407849085009
    Auction Participation History
    2025-26T-42025-26 (T-4) Four Year Ahead Capacity Auction
    Not Prequalified
    Component ID: 194319
    Status: Not Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    CMU GREN24
    10.428 GRENDON STORAGE LIMITED
    Prequalified
  • ✓ Prequalified
  • 2024-25
    Capacity Information
    De-Rated Capacity
    10.428
    Connection/DSR Capacity
    46
    Anticipated Capacity
    10.428
    Max Obligation Period
    1
    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
    Company Name
    N/A
    Parent Company
    Gresham House Energy Storage Holdings Plc
    Registered Holder
    GRENDON STORAGE LIMITED
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2024-GREN24-001
    Agreement Term
    1
    _id
    10685
    CMU ID
    GREN24
    Auction
    Capacity Auction
    Auction Name
    2024-25 (T-1) One Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage 043
    Name of Applicant
    GRENDON STORAGE LIMITED
    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
    10.428
    Secondary Trading Contact - Telephone
    '+4407849085009
    Duration of Capacity Agreement Awarded
    1
    Delivery Years for which Agreement Valid
    2024/2025
    Latest Date SCM is expected to be achieved
    2023-09-30
    Earliest Date SCM is expected to be achieved
    2023-07-31
    Duration of Capacity Agreement in First Bidding Round
    1
    Auction Participation History
    2024-25T-12024-25 (T-1) One Year Ahead Capacity Auction
    Prequalified
    Component ID: 277940
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Primary Fuel of Component: Storage - Battery
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    CMU GREN23
    17.029 GRENDON STORAGE LIMITED
    Prequalified
  • ✓ Prequalified
  • 2023-24
    Capacity Information
    De-Rated Capacity
    17.029
    Connection/DSR Capacity
    46
    Anticipated Capacity
    17.029
    Max Obligation Period
    1
    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
    Company Name
    N/A
    Parent Company
    Gresham House Energy Storage Holdings Plc
    Registered Holder
    GRENDON STORAGE LIMITED
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    Yes
    Agreement ID
    CAN-2023-GREN23-001
    Agreement Term
    1
    _id
    9143
    CMU ID
    GREN23
    Auction
    Capacity Auction
    Auction Name
    2023-24 (T-1) One Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage 043
    Name of Applicant
    GRENDON STORAGE LIMITED
    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
    2023-03-24
    Auction Acquired Capacity Obligation
    17.029
    Secondary Trading Contact - Telephone
    '+4407849085009
    Duration of Capacity Agreement Awarded
    1
    Delivery Years for which Agreement Valid
    2023/2024
    Latest Date SCM is expected to be achieved
    2023-09-30
    Earliest Date SCM is expected to be achieved
    2023-07-31
    Duration of Capacity Agreement in First Bidding Round
    1
    Auction Participation History
    2023-24T-12023-24 (T-1) One Year Ahead Capacity Auction
    Prequalified
    Component ID: 536120
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    CMU SEL043
    32.958 Grendon Storage Limited
    Prequalified (2)
  • ✓ Prequalified
  • ✓ Prequalified
  • 2023-24 2022-2023
    Capacity Information
    De-Rated Capacity
    32.958
    Connection/DSR Capacity
    49.99
    Anticipated Capacity
    32.958
    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
    Company Name
    N/A
    Parent Company
    Statera Energy Limited
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    No
    _id
    10212
    CMU ID
    SEL043
    Auction
    Capacity Auction
    Auction Name
    2023-24 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage 043
    Name of Applicant
    Grendon Storage Limited
    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
    '+442071860586
    Connection Agreement Deferral Declaration
    Yes
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2023-24T-42023-24 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID: 159074
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 4h)
    • Description of CMU Components: Battery Storage Plant
    2022-23T-?2022-23 (T-3) Three Year Ahead Capacity Auction
    Prequalified
    Component ID: 1665
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 4h)
    • Description of CMU Components: Battery Storage Plant
    2022-23T-42022-23 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID: 185177
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 4h)
    • Description of CMU Components: Battery Storage Plant
    CMU SEL107
    12.655 GRENDON STORAGE LIMITED
    Rejected
  • ✗ Rejected
  • 2022-23
    Capacity Information
    De-Rated Capacity
    12.655
    Connection/DSR Capacity
    24.995
    Anticipated Capacity
    12.655
    Max Obligation Period
    1
    Unit Information
    CMU Type
    Non CMRS
    Primary Fuel
    Storage - Battery
    Category
    New Build Generating CMU
    Storage Facility
    Yes
    Commercial Information
    Organization
    Company Name
    N/A
    Parent Company
    Gresham House Energy Storage Holdings Plc
    Opt Out Status
    Opt-In
    Agreement Details
    _id
    6744
    CMU ID
    SEL107
    Auction
    Capacity Auction
    Auction Name
    2022-23 (T-1) One Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage Limited
    Name of Applicant
    GRENDON STORAGE LIMITED
    Pre-Qualification Decision
    Rejected
    Transmission / Distribution
    Distribution
    Secondary Trading Contact - Email
    [email protected]
    Secondary Trading Contact - Telephone
    '+4407849085009
    Auction Participation History
    2022-23T-12022-23 (T-1) One Year Ahead Capacity Auction
    Rejected
    Component ID: 615694
    Status: Rejected
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    2022-23T-12022-23 (T-1) One Year Ahead Capacity Auction
    Rejected
    Component ID: 566936
    Status: Rejected
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage (Duration 2h)
    • Description of CMU Components: Battery Storage Plant
    CMU SEL020
    48.045 Grendon Storage Limited
    Prequalified
  • ✓ Prequalified
  • 2021-22
    Capacity Information
    De-Rated Capacity
    48.045
    Connection/DSR Capacity
    49.99
    Anticipated Capacity
    48.045
    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
    Company Name
    N/A
    Parent Company
    Statera Energy Limited
    Opt Out Status
    Opt-In
    Agreement Details
    Agreement Awarded
    No
    _id
    6131
    CMU ID
    SEL020
    Auction
    Capacity Auction
    Auction Name
    2021-22 (T-4) Four Year Ahead Capacity Auction
    CM Unit Name
    Grendon Storage 020
    Name of Applicant
    Grendon Storage Limited
    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
    '+442071860586
    Connection Agreement Deferral Declaration
    Yes
    Duration of Capacity Agreement in First Bidding Round
    15
    Auction Participation History
    2021-22T-42021-22 (T-4) Four Year Ahead Capacity Auction
    Prequalified
    Component ID: 184589
    Status: Prequalified
    Auction-specific values (differ from CMU baseline):
    • OS Grid Reference: SP 874 611
    • Location and Post Code: LAND ON THE WEST SIDE OF MAIN ROAD, GRENDON, NORTHAMPTON, NN7 1JW. (Nearest postcode to grid reference: NN7 1JB).
    • Generating Technology Class: Storage
    • Description of CMU Components: Battery Storage Plant
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