Electrical design & engineering
Design that survives contact with site.
- Design support and reviews
- Network and technical studies
- Earthing and lightning protection
TESTRANO Engineering Services is an Australian engineering company built for high-consequence electrical work — transmission and distribution networks, renewable generation, industrial plant and the critical facilities that cannot afford to go dark.
We test and commission high-voltage plant: transformers, switchgear, cables and the protection schemes that guard them. We engineer, configure and prove protection, control, SCADA and IEC 61850 systems. We take renewable connections from agreement through to the day they export. And we run the programs that keep all of it moving to schedule.
Asset owners, contractors and project teams call us when the outage window is fixed, the compliance deadline is real and there is no second attempt. What they get back is not an opinion — test records, result schedules, an issue register and verification an asset owner can sign against.






Commissioning is the last point at which a mistake is cheap. Every test record we hand over carries the name of the engineer who performed it, and one named lead stays accountable for your scope from first quote to final handover — whoever is on site in any given week.
That works because the method is agreed before anyone mobilises. Procedures, acceptance criteria and reporting format are set at the start, so the result does not depend on which of our engineers is holding the test set.
We tell you what we find while there is still time to act on it, not in the close-out report. Test records, result schedules, an issue register and verification a client can sign against.
About TES
Take a single defined package — a relay test scope, a commissioning window — or hand us the whole technical scope with one line of accountability.
Design that survives contact with site.
Find it on the test set, not at energisation.
Protection that operates when it should, and holds when it should not.
Multi-vendor systems that actually talk to each other.
The supply that has to hold when everything else stops.
From connection agreement to the day it exports.
Someone who understands the engineering and owns the program.
Installed properly, integrated with what is already there.
Pole-mounted assets, maintained from the ground up.
Energisation is not the end of the relationship. Planned care, condition testing, defect rectification and operational support for assets already in service — as a standing arrangement or a single callout.
Scheduled care that finds the problem before the outage does.
What is degrading, how fast, and what waiting will cost.
Defects closed out properly, with the evidence to prove it.
Out on time, back on time, nothing left energised that should not be.
Temporary site infrastructure for project clients, available for hire short or long term.
Pole-mounted switchgear, reclosers and sectionalisers, conductor and insulator work, and EWP-based inspection and maintenance — across urban feeders and rural distribution networks.
Talk to an engineerOur team's experience was built on transmission and distribution networks, utility-scale renewable projects, data centres and heavy industrial plant — across Australia and overseas. That experience came with us when TES was formed.
We document as we go, so the evidence exists when someone asks for it — at handover, at audit, or two years later when a relay operates and somebody needs to know why.
Every test performed, with the instrument used, its calibration status and the engineer who performed it.
Measured values against the acceptance criteria agreed before we mobilised, pass or fail stated plainly.
What we found, when we raised it, who it went to and how it was closed out.
NATA-traceable certificates for every instrument used, issued alongside the test reports.
A statement an asset owner can sign against, confirming the asset is ready for service.
Marked-up drawings, settings records and anything the operations team needs after we leave.
We work on substations, renewable connections, industrial power systems and critical facilities. Our engineers cover electrical design, high-voltage testing, protection and IEC 61850, communications and project delivery — which makes the interfaces between those disciplines ours to manage rather than yours to chase.
Clients bring us in when a deadline is real. We tell them what we find while there is still time to act on it, and we hand over evidence somebody can sign against.
See our credentials
Everything a prequalification system asks for, in one place. Certifications and memberships are held by individual members of the TES team and listed exactly as held.
Assessed competence, ethical obligation and continuing development. Verifiable on the register.
Professional standing recognised across Australian jurisdictions.
Structured planning, coordination and risk management.
Team standards experience, not company certification.
Held by a member of the TES team.
Certified Measurement & Verification Professional.
Professional affiliation.
Industry membership.
Professional certifications and memberships are held by individual TES team members. ISO 50001 is described as team standards experience rather than company certification. Registration details are provided with every proposal.
Everything below is current and ready for your prequalification portal. Send us your requirements and we will return the full pack — licences, certificates of currency, network authorisations and safety documentation.
ABN 22 667 175 411 · ACN 667 175 411
Work is planned around the applicable standard, your specification and the network operator’s requirements — whichever is more onerous. Test equipment is calibrated to NATA-traceable standards, with certificates available alongside test reports on request.
TESTRANO Engineering Services is an Australian engineering company providing HV and LV testing and commissioning, protection and IEC 61850 engineering, SCADA and communications, critical power, grid connection support, project delivery, and ongoing maintenance and asset support.
As early as you can. We can support planning and design reviews, or join later for pre-commissioning, testing, energisation readiness, defect resolution and handover.
Both. TES can deliver a defined testing or engineering package, or coordinate a broader multidisciplinary scope across the project lifecycle.
Completed test records, result schedules, an issue register, verification evidence and close-out documentation — enough for an asset owner to sign off with confidence.
Yes. Planned maintenance, condition testing, corrective work and operational support are available as a standing arrangement or a single callout.
Australia-wide, metro and regional, with crews and test equipment mobilised to site. Network authorisations held are listed on the credentials section.
The asset that keeps tripping. The connection that will not close out. The outage window that is too short. Tell us what is in front of you.
Request a quoteTell us about the project, the technical problem or the deadline. We will ask the right questions and help you find a way through.
info@tes-eng.com.auWe reply within one business day.