Electrical Infrastructure
Complete electrical construction, upgrades and commissioning for complex facilities.
Learn moreGovernment · Defence · Industrial · CommercialElectrical infrastructure
Electrical infrastructure
where reliability matters.
On Top delivers electrical, communications, security and control systems across live, secure and highly regulated facilities throughout NSW.
Who we are
A project contractor with practical management at every level.
Founded and managed by electricians, On Top combines technical knowledge with disciplined commercial and project delivery.
We work with head contractors, asset owners and government clients to deliver new installations, infrastructure upgrades and complex refurbishments—often within facilities that must remain operational.
About On TopCore capabilities
View all services One coordinated electrical package.
Communications & Fibre
Structured communications systems designed, installed and tested in-house.
Learn moreSecurity Systems
Licensed security infrastructure for controlled, monitored and high-security environments.
Learn moreAutomation & Controls
Practical control solutions that improve operation, visibility and energy performance.
Learn moreWhere we work
Built around demanding operating environments.
Government & Defence
Electrical delivery within secure, operational and highly regulated facilities across NSW.
Industrial
Infrastructure, controls and staged upgrades for production, logistics and process environments.
Food & Beverage
Reliable electrical systems for manufacturing, processing and temperature-controlled facilities.
Commercial Fit-Out
Integrated electrical, data and lighting control systems for modern workplaces and public facilities.
Selected work
All projectsProjects that show the depth of our capability.
Government & Defence2025 · Government & Defence
Anzac Rifle Range, Malabar
Removal of ageing electrical infrastructure and installation of a durable new power and lighting system along a new retaining wall in a harsh coastal environment.
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Government & Defence2025 · Government & Defence
RAAF Richmond Building 107
Complete electrical design and construction of new power and lighting systems within a live operational Defence facility.
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Industrial2025 · Industrial
Taronga Zoo Platypus Research Centre
Electrical infrastructure upgrade supporting specialised aquatic research facilities and life-support systems for the platypus habitat.
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Commercial Fit-Out2025 · Commercial Fit-Out
Jesus Family Centre
Complete electrical fit-out and infrastructure upgrade for a refurbished worship and community facility.
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Government & Defence2025 · Government & Defence
Project Blue
Major electrical installation for a highly secure and classified facility operating under strict security protocols.
View projectCommercial Fit-Out
2024 · Commercial Fit-Out
Wingecarribee Animal Shelter
Complete electrical installation for a modern animal care and adoption facility accommodating cats and dogs across adoption, isolation and impound areas.
View projectHow we deliver
Program-focused without losing control of quality.
Plan the constraints
We review staging, interfaces, shutdowns, access, procurement and documentation before they become site problems.
Manage with trade knowledge
Our management team understands how the work is physically installed and how decisions affect program and quality.
Commission and hand over properly
Testing, labelling, as-builts and close-out are treated as part of delivery—not an afterthought.