At Electricity Asset Services, we deliver secondary asset replacement services that keep power networks operating safely, efficiently and in line with modern standards. Our teams have extensive experience working on live low, medium and high-voltage systems, replacing ageing or obsolete equipment with minimal disruption to supply.
Secondary asset replacement involves renewing or upgrading the electrical systems that support, control, and protect the main power infrastructure. These are often referred to as non-primary assets and include protection relays, control panels, SCADA systems, metering, communication devices, and associated wiring. While these components don’t carry the main electrical load, they play a vital role in monitoring, controlling, and safeguarding the network.
Over time, secondary systems can become outdated or fall short of current operational and safety standards. Replacing or upgrading them helps utilities stay compliant, improve reliability, and reduce the risk of faults or outages. It also creates opportunities to introduce smarter technologies that enhance network visibility and control.
At Electricity Asset Services, we plan and deliver each replacement carefully, ensuring full compatibility with existing primary assets, verifying protection schemes, and maintaining system integrity throughout. Whether it’s a single relay replacement or a complete substation control system upgrade, we work efficiently, safely, and always in coordination with live network requirements.
Replacement of protection and control equipment
Upgrading substation control panels and SCADA systems
Installation and commissioning of modern relays and IEDs
Refurbishment or renewal of wiring and terminations
Integration of new equipment with existing systems
Functional and protection scheme testing
Documentation, labelling and configuration updates
Asset condition assessments and obsolescence planning
Planned works and outage coordination with DNOs and clients
Compliance with all relevant network and safety standards
