Your browser does not support JavaScript or has it disabled. To enable full functionality of this site it is necessary to enable JavaScript.
  • Flexibility services calls

  • Flexibility Services Procurement Statement

    As part of SSEN’s licence obligations, a Procurement statement for flexibility services is now submitted to the regulator on an annual basis. Please see SSEN’s approved Procurement statement for the 2021 financial year below, which reveals information on new forecasted zones.

  • SSEN CMZ – Opportunities and Live CMZ Zones

    Scottish and Southern Electricity Networks (SSEN) are looking for Flexibility Service Providers for CMZ contracts across its North and South network areas.

    If you own, operate or plan to develop a Distributed Energy Resource (DER) in one of the highlighted areas of the map below, please register on the link below (found in Step 1). However, please note this link will direct you to the Delta e-Sourcing website that will be used by SSEN to undertake CMZ procurement activity, a simple process step is below:

    1. Follow the link here

    2. The first page is SSEN landing page, where you can register for the SSEN procurement process or search current CMZ opportunities

    3. Click on the ‘Register’ button on the page

    4. Either Log-in or create a new account. This will set up an account on the Delta e-Sourcing system which SSEN will use as our DPS

    5. Once registered or logged in, you can begin the procurement process for CMZ opportunities

  • The CMZ opportunities seen from the map are detailed within the SSEN SLC 31E – Flexibility Services Procurement Statement found below or in the Flexible Solutions Document Library. For more information on CMZ and Flexible Services, please visit our SSEN Flexible Services page

    SSEN CMZ - Historical Tender Information Updated – July 2021

    Listed within the document below are details of historic CMZ tender exercises undertaken by SSEN. This document will be updated regularly of all CMZ tender processes that are completed, to state whether a CMZ was placed or if it was not viable on this occasion

    Documents from Previously Tendered CMZs

    Here is some documents from previously ran CMZs to provide as example of some fof the information we release prior to a tender exercise. Below we have a postcode list which was used to reveal all the postcodes within a CMZ area and a couple of presentations used for previous CMZ webinars hosted by SSEN. Typically, when a new CMZ opportunity is live, these type of documents will be released on this page to provide more information to interested flexibility service providers.

  • CMZ Headlines

    • 14 Live CMZ Contracts
    • 600MW+ of flexible services contracted to date
    • 8.5GWh+ of energy utilised on our networks through flexibility services
    • 3,800 tonnes of avoided CO2 emissions

    Dynamic Purchasing System (DPS)

    SSEN is establishing a Dynamic Purchasing System (DPS) as the procurement vehicle for Constraint Managed Zones (CMZ) rather than running multiple individual tender exercises. In summary, this approach will allow SSEN to remain compliant with existing procurement legislation, while ensuring as much flexibility as possible for potential applicants. By registering on the DPS, applicants will be pre-qualified for any future CMZ opportunities, streamlining the procurement process.

    As part of this signposting exercise, SSEN is utilising their new DPS platform to collect the pre-tender market engagement responses that you will need to provide when you register your interest. The details that we are collecting are outlined in the table below. Similar to above, it is essential to note that this is not a full procurement exercise and SSEN will not be placing CMZ contracts directly as a result of this signposting event


    Availability – Availability Payments are paid to secure the required service for a period of time, without committing to using the service itself unless it is required. This is typically paid on a £/MW/day basis.
    Utilisation – Utilisation payments are usually linked directly to the amount of power provided or reduced in response to a specific instruction. This is typically paid on a £/MWh basis.
    Capacity – The capability of your site in megawatts (MW) and megawatt hours (MWh).
    ED2 – The next Distribution Price Control period which runs from 2023-2028. SSEN, as well as the other DNOs, are currently building their ED2 plans as part of our licence conditions. The reference to ED2 above, refers directly to that planning process.