
High Voltage Infrastructure
Montgomery Industrial Services designs, builds, and maintains high-voltage electrical systems across Ontario.
From substations and grid connections to large-scale industrial power systems, our team brings certified expertise and precision to every high-stakes project.
We work with municipalities, utilities, contractors, and developers to deliver compliant, reliable, and scalable infrastructure that powers progress safely and efficiently.
Our High Voltage Capabilities
- Pole Line & Overhead Power Installations
- Tension Stringing and Live Line Work
- Substation Construction & Upgrades
- Underground High Voltage Systems
- Transformer Installations, Commissioning, and Testing
- Emergency Restoration and Grid Repair
- High Voltage Splicing & Termination
- SCADA and Control System Integration
Certified & Compliant
We understand the complexity and compliance required for high-voltage work.
Our crews are fully certified and adhere to ESA, CSA, and utility-specific protocols, including live-line procedures and lockout/tagout systems.
Grid-Ready. Storm-Proven.
Montgomery also supports high-voltage emergency response during severe weather events. We deploy restoration crews for rapid grid repair and service recovery across rural and urban zones in Ontario.
Built for Demanding Environments
- Skilled high-voltage technicians with field-proven experience
- Safety-first methodology and planning
- Detailed risk analysis and project scope planning
- Coordinated outages and utility collaboration
- Precision execution that meets utility and municipal standards

Lets Build Ontarios Power BackboneTogether
If your project involves transmission infrastructure, substation work, or storm recovery, choose a partner who delivers certified, safe, scalable results.