Maintenance
Operational excellence
Operational reliability starts with deep technical insight and disciplined preventive maintenance. From substations to switchgear, we keep electrical infrastructure running safely, efficiently, and without interruption.
End-to-end responsibility for site performance
We ensure long-term performance of high-voltage systems through expert maintenance, fault response, upgrades, and system optimization. But reliable operation also depends on the physical integrity of the site. That’s why we take responsibility for the full environment – maintaining not just substations and protection systems, but also access roads, fencing, and surroundings. Whether preventive, planned or corrective, our work reduces downtime, extends asset life, and supports safe, stable operations – inside and out, 24/7.
Total maintenance
responsibility – inside
and out
Reliable operation requires more than just technical maintenance. From the heart of the substation to the perimeter fence, we take responsibility for the entire site – ensuring safe, compliant, and uninterrupted performance. Our operations and maintenance services combine deep electrical expertise with practical site management, reducing downtime, extending asset lifetime, and supporting the overall resilience of your infrastructure.
Inside
We maintain and optimize the technical core of high-voltage infrastructure, ensuring safe, stable, and compliant operations:
- Substation Maintenance – Scheduled inspections, thermography, testing, and corrective repairs.
- Switchgear & Transformer Service – Cleaning, oil analysis, replacement of components and diagnostics.
- Protection Systems & SCADA – Testing, configuration, and firmware updates for reliable system control.
- Fault Response – 24/7 troubleshooting and emergency repair of HV components and systems.
- System Upgrades – Lifecycle-driven replacement of aging assets with minimal disruption, including PQ enhancements to ensure optimal system performance and grid stability.
Available services
Outside
Operational reliability also depends on safe and functional surroundings. We manage and maintain the physical infrastructure that supports access, safety, and compliance
Site Access & Roads – Maintenance of access roads, fences, gates, and drainage systems.
Groundskeeping – Vegetation control, clearing, and surface management to prevent hazards.
Lighting & Signage – Inspection and repair of external lighting, wayfinding, and safety signage.
Perimeter Security – Monitoring and maintenance of fences, surveillance systems, and intrusion detection.
Environmental Compliance – Support for local requirements on erosion control, noise, and visual impact.
Overhead Lines – Inspection, maintenance, and repair of overhead cables, towers, poles, and insulators to ensure system reliability and safety.
Available services
Total maintenance
responsibility – inside
and out
Reliable operation requires more than just technical maintenance. From the heart of the substation to the perimeter fence, we take responsibility for the entire site – ensuring safe, compliant, and uninterrupted performance. Our operations and maintenance services combine deep electrical expertise with practical site management, reducing downtime, extending asset lifetime, and supporting the overall resilience of your infrastructure.
Inside
We maintain and optimize the technical core of high-voltage infrastructure, ensuring safe, stable, and compliant operations:
- Substation Maintenance – Scheduled inspections, thermography, testing, and corrective repairs.
- Switchgear & Transformer Service – Cleaning, oil analysis, replacement of components and diagnostics.
- Protection Systems & SCADA – Testing, configuration, and firmware updates for reliable system control.
- Fault Response – 24/7 troubleshooting and emergency repair of HV components and systems.
- System Upgrades – Lifecycle-driven replacement of aging assets with minimal disruption, including PQ enhancements to ensure optimal system performance and grid stability.
Outside
Operational reliability also depends on safe and functional surroundings. We manage and maintain the physical infrastructure that supports access, safety, and compliance:
Site Access & Roads – Maintenance of access roads, fences, gates, and drainage systems.
Groundskeeping – Vegetation control, clearing, and surface management to prevent hazards.
Lighting & Signage – Inspection and repair of external lighting, wayfinding, and safety signage.
Perimeter Security – Monitoring and maintenance of fences, surveillance systems, and intrusion detection.
Environmental Compliance – Support for local requirements on erosion control, noise, and visual impact.
Overhead Lines – Inspection, maintenance, and repair of overhead cables, towers, poles, and insulators to ensure system reliability and safety.
Available services
Need more answers?
Maybe you can find it here
What types of maintenance services do you offer?
We provide both preventive and corrective maintenance for high-voltage infrastructure, including substations, switchgear, transformers, protection systems, and SCADA. Our services cover scheduled inspections, condition monitoring, diagnostics, and 24/7 fault response.
Can you work on live systems?
Yes. Our teams are trained, equipped, and certified to perform maintenance and upgrades in live environments, with strict safety procedures in place to minimize risk and avoid unnecessary shutdowns.
What about the physical site. Do you maintain that too?
Yes. We maintain access roads, fencing, vegetation, lighting, and other external features to ensure safe access, compliance, and operational readiness of the entire site.
Can you respond quickly to faults or outages?
Yes. We offer 24/7 emergency response and troubleshooting by experienced technicians, minimizing downtime and restoring operation as quickly and safely as possible.
Do you offer long-term service agreements?
Yes. We tailor service agreements to your site’s operational needs – covering routine maintenance, upgrades, emergency support, and compliance reporting. This ensures predictable performance and reduced downtime over time.
Do you only maintain substations?
No. We take care of the full electrical infrastructure, from primary assets like substations and transformers to secondary systems such as protection, control, and communication equipment.
Who do you typically work with?
We support utilities, transmission system operators, data centres, CHP plants, and industrial energy users who require reliable, safe, and well-maintained power infrastructure.
How do you ensure safety and compliance?
All work is carried out according to current safety regulations and technical standards. We document all activities and perform risk assessments as an integrated part of every task.
Still having questions?
Powering progress with our partners
Headquarters
Physical address
Registered branch
Cross-border expertise
DELPRO is a leading, trusted high-voltage partner with a global reach, delivering complex, large-scale solutions with precision, speed, and authority. Our international footprint and proven track record make us a trusted force in the global green transition.
Let’s
connect
Do you have a project in mind or a high-voltage challenge that needs solving? With expertise across the entire value chain, we deliver reliable results from idea to execution. Get in touch with our team.
Do you have the courage
to take responsibility?
At DELPRO, we take pride in being a company where responsibility, reliability, and professional excellence go hand in hand. As a trusted partner in the energy sector, we work in a highly specialized field that demands precision, teamwork, and a strong safety culture. That’s why we foster an environment where knowledge-sharing, accountability, and mutual respect are at the core of how we work.
