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SP Energy Networks is aiming to make the transition to becoming a Distribution System Operator (DSO). FUSION represents a key element of that transition. As the electricity system changes from a centralised to decentralised model, it enables a smarter and more flexible network to function.


October 2018 – December 2023

Project Status


About the Project

About the Project

The increase in Distributed Energy Resources coupled with the increasing load demand from low carbon technologies such as electric vehicles has fuelled a need to create an active distribution network capable of managing modern customers’ needs.

Our innovative FUSION project is trialling commoditised local demand-side flexibility through a structured and competitive market, based on the Universal Smart Energy Framework (USEF).

FUSION will enable Distribution Network Operators and all market actors to unlock the value of local network flexibility in a competitive and transparent manner. This will be enabled by applying the functions and structure defined in the USEF.

SP Energy Networks are working closely with the Energy Networks Association (ENA) on the Open Networks Project. This collaborative work will accelerate our transition to a Distribution System Operator.

Check out our project video for more information:


14 June 2021
As the aim of FUSION is to test an innovative ‘flexibility market’ in East Fife, the project team are looking for homeowners in the area who are willing and able to participate in a project trial, allowing us to manage the local network more intelligently and cost-effectively than traditional reinforcement would typically allow. Operating the network ‘flexibly’ means we can meet local demand requirements whilst ensuring stability and security of supply, and enables more low carbon technologies to connect – ultimately contributing to the UK’s ambitious net zero targets.

If you are a homeowner in East Fife and either have low carbon technologies installed (such as solar panels or battery storage) or are considering doing so in the near future, please click here to read more and to complete our short survey form: FUSION homeowner network trial.

16 September 2020
This December Project FUSION will be inviting tender responses for the provision of local flexibility services in East Fife.

The window for completing ‘Expression of Interest’ (EoI) response forms closed on 7th October. The figure below shows the timeline being employed for the remaining stages in the flexibility procurement process.

Further details on the procurement process and the trials themselves are available by clicking the above tab titled ‘FUSION Flexibility Tender’. 

Fusion Timeline


The Benefits For Customers

  • FUSION will unlock flexibility in the distribution network: this means it can be procured by a range of market actors. Aggregators will be able to operate to aid the development of the flexibility market. By facilitating this neutral market, network flexibility will be accessible to all parties.
  • For the Distribution Network Operators, constraint management will be trialled, alleviating localised network congestion without requiring costly and time consuming network reinforcement. This will provide excellent value for money for customers. The creation of a flexibility market will go beyond existing bilateral trading of flexibility, providing a whole systems approach to realising the value of flexibility.
  • Customers will also be empowered to commoditise their flexibility thanks to new routes to market for existing and emerging flexibility providers in the distribution network.
  • This smarter use of the distribution network assets means significant carbon and environmental benefits. The system favours renewable energy sources and facilitates the uptake of low carbon technologies.  


Project Partners

Project Partners

DNV GL, Origami Energy, PassivSystems, Imperial College London (Academic partner), SAC Consulting, Fife Council, The University of St Andrews.

Working in Coordination

ENA Open Networks Project.

Collaboration with

SSEN & ENWL: TRANSITION, WPD: Electricity Flexibility and Forecasting System (EFFS)




TEF logoFUSION is working directly with TRANSITION (SSEN in partnership with ENWL) and EFFS (WPD), two other awarded NIC 2017 projects focussing on the Distribution System Operator transition. The aim of this is to develop a thorough and robust collaboration structure and plan. Collectively the projects are referred to as T.E.F. (TRANSITION, EFFS, FUSION). This is a welcomed project funding condition for all three projects.

SP Energy Networks are proactively engaging in discussions, workshops and reporting to develop the collaboration plan, finding and developing synergies across the projects to enable and promote collaboration wherever possible.

FUSION Flexibility Tender

FUSION Flexibility Tender

In December 2020 Project FUSION will issue an Invitation to Tender (ITT) for the provision of flexibility services in East Fife.

If you wish to consider responding to that ITT, you will need to complete this Expression of Interest (EoI) form.

Next Steps

Interested parties have until 7th October 2020 to complete this online ‘Expression of Interest’ (EoI) Response Form.

Guidance on how to complete the EoI will be provided via a dedicated Webinar on Monday 28th Sep, 12:00 – 13:00.

Supporting Documentation

Flexibility Service Requisition - Project FUSION

RefYearResponse TypePeriodService WindowDaysService TypeDuration (mins)
12021-250250Oct - Dec09:00 – 10:30Mon - FriSustain Peak Management60
11:00 – 13:00
15:00 – 17:00
22021-250250Jul – Sep09:00 – 10:30Mon – FriSustain Peak Management60
11:00 – 13:00
15:00 – 17:00
32021-250250Oct - Dec14:00 - 16:00Mon – FriSecure DSO Constraint Management (Pre-Fault)60
42021-250250Jul - Sep14:00 - 16:00Mon – FriSecure DSO Constraint Management (Pre-Fault)60
52021-250250Jun - Dec14:00 - 16:00Mon – FriDynamic DSO Constraint Management (Post-Fault)60

SPEN is currently running two parallel and separate tender exercises to procure flexibility services in East Fife area.

  1. This ‘FUSION’ Flexibility Tender
  2. The BaU Flexibility Tender

The two tenders are complementary and interested parties are strongly encouraged to respond to and participate in BOTH.



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