Specialist HV and LV Electrical Maintenance Services
HV and LV Electrical Maintenance
At Northern HV we provide HV and LV electrical maintenance services to support the ongoing reliability, safety and performance of electrical assets. Our maintenance solutions help clients minimise downtime, reduce risk and extend the operational life of their electrical systems.
We support clients across renewables, utilities, infrastructure, oil and gas, construction, data centres and private networks, operating across the UK and internationally.
Planned and Reactive Maintenance Solutions
Our maintenance services include both planned preventative maintenance and reactive maintenance support. We work closely with clients to develop maintenance programmes that align with operational requirements, asset condition and safety obligations.
Typical maintenance activities include inspections, testing coordination, condition assessments and corrective works to maintain system integrity and performance.
Works Delivered to the Highest Standard
Safety, Compliance and Asset Care
All maintenance activities at Northern HV are delivered in accordance with relevant standards, client safety rules and regulatory requirements. Our approach to risk management, quality assurance and safety is governed by our ISO management suite.
We are certified to ISO 9001, ISO 14001, ISO 27001 and ISO 45001, are an SSIP Certification Body Member, and hold NERS accreditation. This ensures maintenance works are planned, controlled and documented to the highest standards, with full compliance across electrical network operations.
Governed by our ISO management suite
Experience Maintaining Critical Electrical Infrastructure
Northern HV supports maintenance programmes across substations, transformers, switchgear and HV networks. Our team has experience working in live and safety critical environments, ensuring maintenance works are completed safely and efficiently with minimal disruption.
We support both standalone maintenance activities and long-term maintenance contracts, adapting our service to meet changing operational demands.
Safe, Compliant & operational
Maintenance Support for DNO and IDNO Networks
Northern HV provides HV and LV maintenance services supporting both DNO and IDNO owned networks. Our team has experience working within regulated distribution environments, maintaining assets in line with network requirements, safety rules and operational procedures.
We support maintenance activities across substations, transformers, switchgear and associated network infrastructure, ensuring assets remain safe, compliant and operational. Our engineers understand the importance of maintaining continuity of supply while carrying out planned and reactive maintenance works.
Why Choose Northern HV for Electrical Maintenance
Clients choose Northern HV for our reliable maintenance services, technical expertise and proactive approach. We focus on preventing issues before they arise while responding quickly and effectively when reactive support is required.
Our ability to integrate maintenance with commissioning, SAP and fault response services provides a joined-up solution for managing electrical assets.