Limerick, Ireland — 11th December 2025 — The Health Service Executive (HSE) has selected Irish technology company EpiSensor to deliver the energy monitoring infrastructure for a nationwide decarbonisation programme, as Ireland’s healthcare system works to meet legally mandated climate targets.
With a sprawling estate of c. 4,400 buildings across c. 2,600 sites—the largest property portfolio in Ireland—the HSE faces a significant challenge in meeting the Climate Action Plan’s requirement for a 51% reduction in energy-related emissions by 2030. This seven-figure contract with EpiSensor provides the foundational data infrastructure needed to identify where energy is used, measure efficiency improvements, and verify carbon reductions.
You Can’t Manage What You Can’t Measure
Real-time energy data is the essential first step in any decarbonisation strategy. Without granular visibility into consumption patterns, identifying waste and measuring the impact of efficiency measures becomes guesswork. EpiSensor’s platform captures energy data at quarter-hourly intervals across multiple utility types—electricity, gas, water, and heating fuels—providing the evidence base for targeted action.
“The global opportunity for reducing cost and carbon through better energy visibility is enormous,” said Brendan Carroll, CEO of EpiSensor. “But it starts with accurate easy-to-use measurement. Our technology gives the HSE the data foundation to understand precisely where, when and how energy is being consumed, so they can make informed decisions that cut both bills and emissions.”
The HSE achieved ISO 50001 energy management certification in 2024 and to the end of 2024 reported a 34% improvement in energy efficiency and a 19.2% reduction in energy-related emissions. This metering programme will provide the ongoing data needed to maintain certification and accelerate progress toward 2030 goals.
Healthcare’s Climate Imperative
Healthcare facilities have a particularly compelling case for sustainability investment. Air pollution from fossil fuels contributes directly to the cardiovascular, respiratory, and mental health conditions that healthcare systems treat. Reducing the health sector’s own emissions addresses both environmental responsibility and the upstream causes of patient presentations.
The HSE’s Infrastructure Decarbonisation Roadmap and Climate Action Strategy recognise this connection. Accurate metering supports initiatives across the roadmap—from LED lighting upgrades to heat pump installations—by providing before-and-after data to verify savings.
“Sustainable healthcare infrastructure isn’t just about meeting government targets,” Carroll added. “It’s about breaking the cycle where our hospitals contribute to the air pollution that makes people sick. Every kilowatt-hour we help the HSE save is a step toward healthier communities.”
The Technology Behind the Transformation
EpiSensor’s platform combines:
- Billing-grade metering accuracy (Class 0.5S) for reliable data
- Wireless sensor networks that reduce installation disruption in clinical environments
- Local data storage ensuring no measurement gaps during network outages
- Secure, encrypted communications protecting sensitive operational data
- Multi-utility monitoring covering electricity, gas, water, and liquid fuels
The platform is designed, developed, and manufactured entirely in Ireland—reducing supply chain emissions compared to imported alternatives and supporting the domestic cleantech sector.
Public Sector Leadership
Ireland’s public sector organisations are legally mandated to achieve:
- 51% reduction in energy-related greenhouse gas emissions by 2030
- 51% reduction in thermal emissions by 2030
- 50% improvement in energy efficiency by 2030
The HSE’s investment in comprehensive metering infrastructure demonstrates the scale of action required across the public sector. With real-time data feeding into energy management systems, facilities managers can identify anomalies, detect waste, and prioritise interventions across a geographically dispersed estate.
A Model for Public Procurement
The HSE’s procurement approach weighted solution quality at 70% and price at 30%—recognising that infrastructure supporting long-term climate goals requires technology that will remain robust and adaptable over its lifetime. This methodology could serve as a model for other public bodies investing in sustainability infrastructure.
About EpiSensor
EpiSensor builds the IoT infrastructure for the sustainable energy transition, helping organisations measure, manage, and reduce their energy consumption and carbon emissions. All products are designed and manufactured in Ireland.
