Case Study

Enel X enables grid support services for Ireland’s largest airport, with EpiSensor Technology

Enel_X logo

Enel X


Rome, Italy

End Customer

Dublin Airport Authority



Key Products
Key Points of Interest
  • 11+ MW flexible capacity delivered to EirGrid’s grid services
  • 90s reaction time for frequency detection
  • Data recording at 20ms resolution for 30 seconds around the frequency event
  • Dynamic frequency response
  • Highly accurate time sync

Enel X is the world’s leading demand response provider with around 8.5 GW of flexible load deployed across the Americas, Europe, Asia, and Oceania. Through Demand Response programs, utilities or grid operators pay commercial and industrial consumers to modulate their energy consumption in response to peaks in electricity demand. Part of the Enel Group, Enel X provides next generation products and services aimed at the energy transformation in homes, cities and businesses, with a view to sustainable development.


Dublin Airport Authority (DAA) partnered with Enel X in 2018 and signed up to deliver flexible capacity to Ireland’s grid services programmes, which are designed to ensure the security and stability of electricity supply for everyone on the island of Ireland.

The partnership enabled DAA to enrol 8MW of flexible capacity into the more traditional Integrated Single Electricity Market (I-SEM) and 3MW of faster responding flexibility into the “Delivering a Secure Sustainable Electricity System” – or DS3 – programme. Participation in demand response aligns their asset management and sustainability objectives with EirGrid’s grid balancing schemes. 

Enel X - DAA System Architecture Diagram
Our Contribution

To participate in the DS3 programme, EpiSensor’s ZDR hardware is installed in Dublin Airport and monitors grid frequency in real-time. Its technology enables Dublin Airport to automatically move to backup generation if a frequency event is detected, which in turn supports the electricity grid in Ireland allowing higher percentages of renewable generation from wind and solar.

"EpiSensor is proud for our technology to be part of the Enel X Demand Response offering, enabling Ireland’s grid resilience while furthering the operational resilience and sustainability of DAA’s operations."

Brendan CarrollCEO, EpiSensor
Dublin airport image copyright David Crespo via Canva Getty Images

Dublin Airport is an International Airport serving Dublin, the capital city of Ireland and is Ireland’s largest airport. It is operated by Dublin Airport Authority. Copyright @David Crespo via Canva.

The energy transition requires us to keep up with ever-changing rules and regulations in order to deliver our demand response services. EpiSensor enables us to meet those requirements in an agile and futureproof way.

John ByrneHead of Operations, Enel X UK & Ireland

Read more about this project here.

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Data graph EpiSensor Core

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