Datacentres are the digital heart of our world. But behind every cloud server, streaming service, and AI model lies a simple truth: none works without power. As global demand for data grows, so does the power requirement of the facilities that store and process it. That’s why high-voltage (HV) infrastructure is fast becoming the backbone of next-generation data centres.
At Reynard High Voltage Solutions, we help connect the dots between high-voltage grids and high-performance data centres. Here’s why that connection matters more than ever.
High-Voltage Power: Built for the Future of Data Centres
Large-scale data centres today easily demand 30 to 150 megawatts (MW) of continuous power. That’s no longer something the local medium-voltage network can reliably provide. Instead, more data centre developers opt for direct connections to the high-voltage transmission grid — typically at 66 kV, 110 kV, or 150 kV.
This shift isn’t just about capacity. It’s about efficiency, stability, and future-proofing.
Key benefits of HV grid connections for data centres:
- Higher power capacity for scaling operations
- Greater redundancy and reliability (dual feeds from separate substations)
- Lower transmission losses over long distances
- More control over power quality and availability
The Infrastructure Behind the Uptime
A high-voltage grid connection requires specialist knowledge and precise execution. From engineering and cable termination to resonance testing and commissioning, each step must meet the highest standards to ensure long-term reliability and safety.
Reynard delivers:
- HV cable termination & jointing
Precise, standards-compliant connections for underground transmission cables, including XLPE systems up to 150 kV. - Resonance testing & commissioning
Our testing equipment ensures your cable system is 100% ready for energisation. - Consultancy & project support
From early design reviews to on-site execution, we support EPCs and grid operators with practical, hands-on expertise. - Full-service subcontracting
We take responsibility for delivering cable connection scopes — including planning, equipment, and technician teams — so you don’t have to manage five different suppliers.
Grid Congestion and Connection Delays
In many regions — including the Netherlands, Germany, and Ireland — grid congestion slows down data centre developments. The solution? Engage with HV infrastructure early in the planning process and work with partners who understand the grid landscape, regulatory frameworks, and technical realities.
Reynard’s team has worked on some of the most complex high-voltage cable projects across onshore and offshore energy, bringing that expertise to data centre developments.
The Energy Transition Is Digital
As data centres grow, so does their responsibility. Many operators are building on-site renewables, energy storage systems, and grid-balancing solutions. These rely on robust HV infrastructure to integrate clean power, manage peaks, and stabilise the grid.
In short, high-voltage is no longer optional — it’s the foundation.
Let’s Connect Your Data Centre to the Future
If you’re planning a data centre or expanding an existing one, we’re ready to help you design, install, and test the HV cable systems that power it. Whether you need a reliable partner for termination and testing or a full-service subcontractor who gets the job done — Reynard is here.
Get in touch to discuss your project.
