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Flood Risk Assessments – programme of works at substations across the UK

Flood risk Feasibility support


EPS has been supporting electricity Distribution Network Operators (DNOs) in their efforts to ensure that their infrastructure is better protected from different types of flooding by assessing individual substations at risk. Ensuring network infrastructure is resilient and resistant to flooding is vital to maintaining an uninterrupted service to both private and commercial customers.

  • In today’s technology driven, high power demand society, the call for a constant and stable power service infrastructure is not just about reliably supplying consumers but also about ensuring a robust network to supply future generations. 
  • EPS has been commissioned to provide flood risk assessments (FRAs) at electricity substation sites across the UK. The objective of this work is to evaluate risks from different sources of flooding – from rainfall, rivers, groundwater, sewers and the sea.
  • The FRA reports provide a summary of 1 in 100 year flood information and potential flood scenarios formulated by examining a variety of sources such as historic flood data, detailed studies held by Local Authorities and the Environment Agency, along with a survey of the site in order to collect information on the topographic elevation and any site specific features. A range of flood protection measures, which could be considered in order to protect the vulnerable assets at the site are also included.
  • Our work has enabled the client to risk rank their sites and prioritise their investment to those substations which require more immediate flood mitigation measures to be implemented. This system has helped the client to identify sites which require additional flood resilience measures (meaning the infrastructure can be rapidly restored following a flood event) as well as those sites at very high risk which need to be made flood resistant and completely protected from flooding.
  • The client’s assets are now more resilient and resistant to flooding and thus less likely to result in service disruption to customers or a compliance issue with regulators.