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Whole System case studies


Collaborating with House Builders
and Homes for Scotland 

During RIIO-ED1, we established a strategic partnership with CALA homes and undertook a monitoring project to gain empirical data on the increase in electricity demand at a secondary substation as customers adopted EVs and heat pumps.  

Founded on this initial engagement with CALA homes, we established regular engagement with a group of housebuilders including Bellway Homes, Robertson Homes and Homes for Scotland. In 2018, we held the Homes for the Future conference to provide information on targets for decarbonisation in Scotland, the impact of low carbon technologies on the electricity network for housebuilders, IDNOs, Local Authorities and public bodies.  

To help the housebuilders to develop robust electricity network connection requests that accommodated housing developments with heat pumps and EV chargers, SPEN and SSEN worked in collaboration to develop a calculator to model the required energy demand that would arise through the adoption of Low Carbon Technologies (LCTs) such as heat pumps and EVs.  

The After Diversity Maximum Demand (ADMD) calculator38 enables house builders to determine the capacity required for developments of 20 houses or more, thus informing future quotes and creating a more accurate and streamlined process. 

Going forward into RIIO-ED2, we will continue to support the housebuilding sector through regular engagement. 



FUSION is an ongoing project as part of our DSO transition, in coordination with the ENA Open Networks Project, and through cooperation with SSEN, ENWL, WPD, and other partners, including Fife Council, the University of St. Andrews, and Imperial College London.   

With both network load and complexity increasing in tandem with the uptake of LCTs and DERs, FUSION seeks to maintain and strengthen the distribution network through a more intelligent and innovative approach to flexible network operation, promoting stability and security of supply while supporting the uptake of LCTs.  Facilitating demand-side flexibility through a neutral market, FUSION will enable all market participants to procure and commoditise flexibility 

Going forward into RIIO-ED2: As demand for LCTs continues to increase, and consequently the load requirement on the distribution network, collaboration with other DNOs and external partners (such as Councils and Universities) is a demonstration of our existing Whole System thinking, and will be pivotal to successful delivery of future Whole System solutions and outcomes, and the transition to Net Zero. 

The lessons from Project FUSION, set to culminate in December 2023, will be communicated to all parties and stakeholders, and will inform future projects as we enter RIIO-ED2 and evolve into a DSO.  FUSION will enable a Whole System approach to network flexibility and further facilitate both the use of renewable sources of energy, and the uptake of LCTs. 



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