EVALUATION

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AN INDEPENDENT <strong>EVALUATION</strong> OF THE LCNF Assessment Criteria Accelerates the development of a low carbon energy sector Has the potential to deliver net financial benefits to future and/or existing customers Score (1-5) 4 - Overview of assessment, sources of evidence and comments Assessment: The project clearly facilitates the connection of low carbon generation or demand. Evidence: The aim of the trial was to explore how electricity could be stored to overcome the challenge of intermittent power production from renewable sources. The battery technology was tested to see how much electricity could be stored from local wind turbines when power generation exceeds demand. In particular, the trial explored the potential to reduce voltage fluctuations and manage demand on the distribution network. This enables the accommodation of additional demand or generation on the existing feeders, within the thermal limits of the plant and circuit, without breaching voltage limits or needing to curtail generation. One of the three main benefits for stakeholders was noted in the closedown report as, demonstrating that storage could enable more renewable generation or additional load to be connected to the network without the need for conventional reinforcement. References: • Demonstrating the benefits of short-term discharge energy storage on an 11kV distribution network; Close down report; June 2014. Assessment: Indication that the project is likely to deliver some financial benefits to a selected group of customers. Evidence: While direct financial benefits for customers are not really outlined, figure 18 in the closedown report shows an example of the financial impact of an example daily operation in terms of import charge to export revenue. This shows that there are likely to be some financial benefits for renewable energy generators, although these may be small scale. References: • Demonstrating the benefits of short-term discharge energy storage on an 11kV distribution network; Close down report; June 2014. PÖYRY MANAGEMENT CONSULTING October 2016 713_Poyry_Report_Evaluation_of_the_LCNF_FINAL_Oct_2016_v700.docx 298
AN INDEPENDENT <strong>EVALUATION</strong> OF THE LCNF Has a Direct Impact on the operation of a DNO’s Distribution System Generates knowledge that can be shared amongst all DNOs 4 5 Assessment: The project has been /is ready to roll out into BAU or outputs are utilised in later LNCF projects. The project has a high likelihood of being replicated by other DNOs. Evidence: The closedown report notes that, for this technology to become part of business as usual operations and be a suitable smart alternative to traditional network interventions, the reliability of the full storage facility will have to improve significantly. Areas such as interoperability will have to be addressed. Section 8.4.6 outlines the steps necessary to ensure a successful transition into Business as Usual. UKPN have stated that although the battery is not being put into business as usual, the success of this project proved that it was technically feasible for energy storage to help DNOs create capacity and provide financial benefits to customers; and enabled UKPN and other DNOs to proceed with larger-scale storage projects, e.g. SNS (UKPN) and CLNR (NPG). It is planned to decommission the site, and transfer the energy storage modules to Newcastle University’s Energy Storage Test Bed, where they will continue to generate further learning for the low-carbon energy sector. References: • Demonstrating the benefits of short-term discharge energy storage on an 11kV distribution network; Close down report; June 2014 & UKPN Questionnaire response Assessment: Specific replication report(s) exist / are available on request. A learning dissemination event or webinar was held. Evidence: The operational experience required to replicate the project has been disseminated through the following initiatives: Early Learning Report: October 2012; LCNF Conference: October 2012, November 2013; ESOF meetings; the close down report. Additional details on knowledge dissemination (including specific events and papers), as well as contact details for further information are provided in Appendix B of the closedown report (although it was noted that many of the links are no longer working). A detailed system overview of provided in Appendix C, detailed results in Appendix D and the storage modelling tool in Appendix E. Outline details of the project are also available on UKPN’s innovation webpage. References: • Demonstrating the benefits of short-term discharge energy storage on an 11kV distribution network; Close down report; June 2014. • http://innovation.ukpowernetworks.co.uk/innovation/en/Projects/tier-1-projects/demonstrating-thebenefits-of-short-term-discharge-energy-storage/ PÖYRY MANAGEMENT CONSULTING October 2016 713_Poyry_Report_Evaluation_of_the_LCNF_FINAL_Oct_2016_v700.docx 299
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EVALUATION

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