Proven for performance

Rayo provides specialist technical services that ensure energy infrastructure is not only designed and built — but proven, integrated and ready for operation.

We close the distance between design intent and real-world performance. Our capability spans commissioning, system integration, protection and control, and performance validation.

Working across the full project lifecycle, we support projects from early design input to energisation and optimisation. Our team brings deep expertise across high-voltage systems, substations, BESS and complex grid connections, ensuring assets meet compliance requirements and perform reliably from day one.

Commissioning design and delivery

Development of commissioning strategies and execution plans aligned to project and network requirements.
Preparation of commissioning procedures, Inspection & Test Plans (ITPs) and Temporary Protection Memos (TPMs).
Coordination and execution of commissioning across primary, secondary and control systems.
Integration of commissioning requirements into design and construction to reduce rework and delivery risk.

Protection, control and system integration

Development and validation of protection schemes, relay settings and trip philosophies.
Design and verification of SCADA, communications and control interfaces.
Point-to-point testing and functional verification of integrated systems.
Coordination with OEMs and vendors to ensure cohesive system performance.

High voltage testing and verification

Execution of primary plant testing including insulation, winding and contact resistance, and related HV diagnostics.
Functional testing of transformers, circuit breakers, instrument transformers and associated equipment.
Secondary injection and end-toend testing of protection and control systems.
Progressive verification during installation and pre-commissioning to ensure readiness.

Grid compliance and performance validation

Planning and support for grid compliance including R2 testing, GPS (Generator Performance Standard) validation and performance verification.
System testing to confirm performance against design intent and network requirements.
Identification and resolution of defects prior to energisation.
Alignment with NSP, AEMO and client standards to achieve approvals and compliance.

Energisation and operational readiness

Planning and execution of energisation sequences in line with approved switching programs and safety requirements.
On-site technical leadership during energisation and synchronisation.
Verification that all systems meet operational readiness and handover criteria.
Support for transition into steadystate operations.