Demand Response
Purpose-built infrastructure for grid-scale flexibility services. Trusted by the world's leading aggregators to deliver reliable, auditable demand-side response at scale.
100ms
Frequency response time. React to grid events in under a tenth of a second.
Class 0.5S
Revenue-grade metering accuracy. Trusted for settlement and compliance.
20ms
High-speed event recording with GPS/GNSS time synchronisation for full audit trails.
1-Second
Cloud data streaming. Real-time visibility into every asset in your portfolio.
Sub-Second Frequency Response
The ZDR-2X is purpose-built for grid services—not a general-purpose device repurposed for demand response. It combines Class 0.5S metering, frequency response, relay switching, and GPS time sync in a single IP67 waterproof enclosure.
Revenue-Grade Measurement
Every kilowatt-hour matters when revenue depends on accurate settlement. The ZEM-63 delivers Class 0.5S metering accuracy to IEC 62053-22 standards, giving aggregators and grid operators the verified data they need for compliance and payment.
Secure & Scalable
Demand response is critical infrastructure. EpiSensor's platform provides the cybersecurity posture and fleet management capabilities required to operate at national scale, with the ZGW-10 Gateway as the central hub managing all devices on site.
Product Range
Three variants for every grid service
The ZDR-2X family covers the full spectrum of demand-side response requirements, from basic relay switching to advanced battery energy storage system integration.
ZDR-20
Static frequency response with relay switching. The foundation for standard demand-side response programmes. Class 0.5S metering, 100ms frequency response, and 4A/250VAC relay output.
Learn More →ZDR-21
Advanced DSR with full audit trail. Adds 20ms high-speed data recording, GPS/GNSS time synchronisation, and key switch for physical lockout. Built for markets that demand granular event evidence.
Learn More →ZDR-22
Dynamic frequency response with battery control. Designed for BESS integration, enabling continuous real-time power modulation rather than simple on/off switching. The most advanced ZDR variant.
Learn More →What our partners say
Trusted by the teams delivering the energy transition
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.
EpiSensor's partnership has played an important role in our ability to win and deliver projects for customers of all sizes and industries around the world, including first-of-kind projects with big multinational brands in the most innovative markets.
Case Studies
Proven in the most demanding deployments
Enel X & Microsoft Data Centre
Enel X enables Microsoft datacenter batteries to support growth of renewables on the power grid, with EpiSensor technology.
Read Case Study →
Data Centre Flexibility
Enabling demand-side flexibility at one of the world's largest data centre operators, supporting grid stability while optimising energy costs.
Read Case Study →
Airport Energy Flexibility
How Dublin Airport participates in demand response programmes using EpiSensor infrastructure deployed and managed by Enel X.
Read Case Study →Ready to scale your demand response programme?
Whether you are an aggregator, utility, or grid operator—talk to our team about how EpiSensor can become the infrastructure backbone of your flexibility services.