Solar Farm HV Commissioning Services Australia
Independent HV Commissioning for Utility-Scale Solar Projects
Australia’s utility-scale solar sector has deployed over 20 GW of capacity, with projects ranging from 5 MW community solar through to 500 MW+ installations. Each project requires rigorous HV commissioning of the electrical balance of plant (EBoP) to ensure safe energisation, grid compliance, and long-term reliability. Megavar provides independent solar farm HV commissioning services covering the complete EBoP scope from MV reticulation through to the grid connection substation.
What We Commission on Solar Farms
- Grid connection substation — HV switchgear, power transformers, protection relays, CTs, VTs, earthing, SCADA, and communications. Full scope as per our HV Substation Commissioning service.
- MV switchgear and ring main units — Testing of 22 kV and 33 kV switchgear across the collector network.
- Inverter step-up transformers — TTR, winding resistance, insulation resistance, vector group verification.
- MV/HV cable systems — Insulation resistance, VLF withstand (where applicable), and sheath integrity testing.
- Protection systems — Secondary injection of all protection relays including overcurrent, earth fault, differential, anti-islanding (81O/81U, ROCOF, vector shift), and NER protection.
- SCADA and plant controller integration — Verification of data flow from inverter SCADA through plant controller to NSP/AEMO control room. Active power control, reactive power control, and frequency response validation.
- Earthing system — Earth grid resistance, step and touch potential, and bonding continuity across the solar farm.
What We Commission on Solar Farms
Grid Compliance and AEMO Hold-Point Testing
For NEM-connected solar farms, Megavar executes AEMO R1 and R2 hold-point tests to demonstrate compliance with generator performance standards (GPS). This includes active power capacity and ramp rate testing, reactive power capability envelope verification, voltage control and power factor regulation, frequency response (mandatory PFR, contingency FCAS), and fault ride-through demonstration.
Inverter OEM Experience
Why Independent Solar Farm Commissioning?
Frequently Asked Questions
Solar Farm HV Commissioning
What does solar farm HV commissioning include?
Solar farm HV commissioning covers the complete electrical balance of plant (EBoP): grid connection substation, MV switchgear and collector network, inverter step-up transformers, MV/HV cables, protection systems, SCADA, plant controller integration, and earthing. It culminates in AEMO R1/R2 hold-point testing and supported energisation.
Does Megavar perform AEMO R1/R2 testing for solar farms?
What inverter brands does Megavar work with?
How long does solar farm HV commissioning take?
Does Megavar commission solar farms nationally?
Ready to commission your substation? Contact Megavar today on 1300 730 499 or visit our contact page to request a quote.
Why Choose Megavar for Solar Farm HV Commissioning?
- National Reach & Experience: Providing expert HV commissioning services across Australia, including Northern Territory and ACT.
- Proven Track Record: Trusted by renewable energy developers and grid operators.
- Comprehensive Testing & Compliance: Ensuring high-voltage systems meet all safety and performance standards.
- Minimised Risk & Downtime: Reducing the likelihood of faults, inefficiencies, and regulatory issues.
- Ongoing Technical Support: Assisting with post-commissioning troubleshooting and system optimisation.
Partner with Megavar for expert solar farm HV commissioning. Our team ensures your high-voltage infrastructure is compliant, efficient, and built for long-term reliability.
Contact us today to discuss your HV commissioning requirements!
Explore Our other services
HV testing and commissioning by Megavar's own engineers. Substations, transformers, cables, switchgear. 200+ instrument fleet, four offices nationwide.
HV reticulation and distribution design across Australia: overhead and underground networks, URD, powerline design and DNSP-ready drafting, 415V to 132kV.
Windfarm HV commissioning: independent EBoP testing, substation commissioning, MV collector network, protection validation, and AEMO grid compliance for wind farms across Australia.
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We’re incredibly excited to share a big milestone in Megavar’s story—we’ve officially opened our new Newcastle branch, located at 22 Gavey Street, Mayfield,
