Testing and commissioning services

Wind Farm HV Commissioning Australia

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Talk to an engineer: 1300 730 499 or service@megavar.com.au

Independent EBoP Commissioning for Onshore Wind Projects

Australia’s onshore wind capacity exceeds 12 GW across more than 100 operating wind farms, with a further pipeline of projects in development across every state. The electrical balance of plant (EBoP) – everything from the turbine terminals to the grid connection point – must be independently commissioned to ensure safe energisation, grid compliance, and long-term operational reliability.

Megavar provides independent windfarm HV commissioning services for the complete EBoP scope, ensuring that the electrical infrastructure your wind farm depends on has been tested by an impartial party – not the same company that built it.

ISO 9001, 14001 and 45001 certifiedLicensed in every Australian stateTeams in Hobart, Launceston, Adelaide and Newcastle

EBoP Scope We Commission

Grid connection substation – HV switchgear (33–330 kV), power transformers, protection relays, CTs, VTs, earthing, SCADA/RTU, and communications.
MV collector network – 33 kV ring main units, cable testing, feeder protection, and collector bus protection.
Turbine step-up transformers – TTR, winding resistance, insulation resistance, and vector group verification.
MV/HV cable systems – Insulation resistance, VLF withstand, and sheath integrity for collector and transmission cables.
Protection systems – All substation and feeder protection including overcurrent, earth fault, differential, distance, anti-islanding, and NER protection.
SCADA and wind farm controller – Integration of turbine SCADA with plant controller and NSP/AEMO control room. Active power curtailment, reactive power control, and frequency response.
Earthing – Substation and turbine earthing resistance, step and touch potential, and bonding continuity across the wind farm.

Grid Compliance Testing

We execute AEMO R1 and R2 hold-point tests including active power capacity, reactive power capability, voltage control, frequency response (PFR, contingency FCAS), and fault ride-through. We also support commissioning of grid-forming inverter capability where specified.

Turbine OEM Experience

Our commissioning engineers work alongside all major turbine OEMs in the Australian market: Vestas, Goldwind, Siemens Gamesa, GE Vernova, Nordex, and Enercon. We maintain constructive relationships with OEM commissioning teams while providing independent verification of the EBoP systems.

Why Independent Commissioning?

The analogy we use: would you want to mark your own schoolwork? When the EPC that builds the wind farm also commissions it, construction defects can be overlooked. Megavar’s independent commissioning provides unbiased quality assurance, protecting the asset owner’s investment and ensuring the project meets its performance guarantees.

Why Choose Megavar for Windfarm HV Commissioning?

Independent Verification: Ensuring an impartial and thorough assessment.
Full-Scope HV Testing & Commissioning: Covering substations, switchgear, transformers, and control systems.
Proven Expertise in Renewable Energy: Experience commissioning utility-scale windfarms.
Regulatory Compliance Assurance: Ensuring smooth grid connection approvals.
Australia-Wide Service: Supporting wind energy projects across all regions.

Partner with Megavar for independent, reliable, and expert Windfarm HV Commissioning. Contact us today!

Take it to your team

Capability statement

Substation Commissioning Management

Commissioning strategy, inspection and test plans, hold points, energisation and handover under one accountable manager.

Capability statement

High-Voltage Testing, Commissioning and Maintenance Services

Primary plant testing, protection and SCADA commissioning, substation maintenance and the design capability behind them.

Clients

What our clients say

The Megavar team demonstrate professionalism and excellence in all aspects of HV electrical commissioning. It’s great to work with the team with the high standards of quality and safety that you would expect when dealing with complex high voltage installations, the experienced Megavar team has been exactly what was needed for project delivery.

Russell CunninghamCommissioning Manager | Fluence Energy

Megavar are industry leaders in HV commissioning services, offering high quality commissioning services. They are experts in high voltage commissioning services, and their work is always on time, on budget and to the highest quality.

Shaun ColtonEngineering Manager Substations & BESS, Downer Group

FAQ

Frequently Asked Questions Windfarm HV Commissioning

What does windfarm EBoP commissioning include?

EBoP commissioning covers all electrical infrastructure except the turbines themselves: grid connection substation, MV collector network, turbine step-up transformers, MV/HV cables, protection systems, SCADA, wind farm controller, and earthing. It includes AEMO R1/R2 hold-point testing and supported energisation.

Does Megavar commission the wind turbines?

No. Turbine commissioning is performed by the turbine OEM. Megavar commissions the EBoP – everything from the turbine terminals to the grid connection point. We work alongside the OEM commissioning team.

What turbine manufacturers does Megavar work with?

We work alongside Vestas, Goldwind, Siemens Gamesa, GE Vernova, Nordex, and Enercon on Australian wind farm projects.

Does Megavar perform AEMO R1/R2 testing for wind farms?

Yes. Grid compliance testing (R1/R2 hold-points) is a core part of our wind farm commissioning scope, demonstrating compliance with generator performance standards.

How long does wind farm EBoP commissioning take?

Typically 4–8 weeks for a 100–200 MW wind farm, depending on the number of turbines, collector network complexity, and grid compliance testing requirements.

ISO Certified and Licensed in Every State

Megavar is certified to ISO 9001 (quality), ISO 14001 (environment) and ISO 45001 (safety), and holds electrical contractors licences in every Australian state.

Ready to commission your substation? Contact Megavar today on 1300 730 499 or visit our contact page to request a quote.

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