SPM Flexibility Prospectus

This Market Propsectus page highlights our 2024/25 Winter requirements as well as provides an estimated forecast of our full requirements during the full ED2 period. We will be procuring flexibility for both our Operational Flexibility and Deferred Reinforcement use cases summarised below:

  • Deferred Reinforcement – Our Month Ahead Market is now set up to fulfil our upcoming requirements to alleviate constraints on our network which will manage uncertainty and offer an optionality benefit to defer reinforcement. Our Deferred Reinforcement solution mainly consists of the Scheduled Availability ENA standardised product. These full requirements are published alongside associated Guide Prices in our Market Prospectus Supporting Data Document.

  • Operational Flexibility – This Flexibility offering is used to manage operational network events such as planned or unplanned outages. Our Operational Flexibility offering consists of the following standardised ENA products; Operational Utilisation or Operational Utilisation and Scheduled Availability. We will update the market on any Operational Flexibility requirements that arises following a review of outage planning activities throughout the year.

Full definitions of the ENA standardised products is available in our Participation Guidance on our Flexibility website.


These requirements will be refreshed annually to update our Providers and wider stakeholders on our most up to date forecast of potential network constraints and flexibility requirement. Guide Prices and overall value of the market per constraint location will be updated annually for potential participants to view and forecast the size and potential revenue available for the upcoming year.




Estimated Value of SPEN Flexibility Market

The overall value of our SPEN Month ahead market in the coming years is estimated to be £11.3m. The cost benefit of this estimated procured flexibility to our customers is estimated to be £36m at the end of this ED2 period.
Entire ED2 period (2024-2028) → £11.3m
SPD £3.8m
SPM £7.5m

Please get in touch with our Flexibility procurement team to find out more about Operational Flexibility Requirements at flexibility@spenergynetworks.co.uk

There are currently no Operational Flexibility opportunities identified in the SPM area. However, ad-hoc requirements could be identified as additional requirements in both SPM and SPD licence areas as and when Control Room / Outage Planners identify areas requiring support

The map below highlights our Scheduled Utilisation requirements by location up until 2028. We will procure for our Scheduled Utilisation product via our Month Ahead Market currently facilitated by the Piclo platform.



Map displaying locations and associated MWh volume of requirements
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Total Installed Capacity (MW)


Select a substation location below for a breakdown per location of estimated MWh required up to 2028 and Estimated value of contracts in the upcoming 2024/25 period. The Estimated Available Contract Price reflects the overall opportunity available if the total required capacity was fully dispatched. The total price awarded to a Provider will differ depending on a variety of factors including but not limited to; price offered by provider during bidding process, MW dispatched following a successful bid.


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Table Summary of Flexibility Requirements per Substation Location

The below graph demonstrates the estimated MWh volume of flexibility requirements expected on our network over the next 4 years (up to 2028). Currently we have a breakdown of all 33kV and 11kV substations’ requirements and are in the process of reviewing our LV network requirements which will be updated in early 2025.


Estimated volume of flexibility required in full ED2 period (MWh)
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Disclaimer   "The potential revenue displayed is based on our current Distribution Future Energy Scenarios (DFES), which drive our forecast reinforcement requirements and an estimated level of utilisation. Changes to our underlying assumptions informed by a range of factors out with our control, including the uptake of low carbon technologies may result in material changes to the potential revenue available as part of our flexibility tenders."