Power Engineering and Design Consultants Perth

Power System Design That Gets Built, Not Just Drawn

Power system design for mining involves the full electrical engineering scope from site load analysis and concept through to detailed design documents, protection coordination studies, and commissioning test packs the complete technical foundation a power station needs before a single cable is pulled.

At Silverstone, that design work is done by the same engineering team that commissions the finished station. We design for WA mining conditions, Pilbara heat loads, Goldfields logistics, remote site access constraints, and the compliance requirements of HV systems operating under Western Power and Horizon Power network rules. Our designs don’t get handed to a separate construction contractor to figure out on site.

We design diesel power stations, hybrid solar-diesel systems, BESS-integrated generation, and underground HV installations. Our scope includes both LV systems (415V) and HV systems up to 33kV, protection relay coordination, earthing system design, and full commissioning documentation to AS/NZS standards.

What Our Power System Design Covers

Here is what you actually get when Silverstone designs your power system — not a general capability statement, but the specific work our engineers carry out from concept through to commissioning readiness.

Site Load Analysis & Concept Design

We start with your actual load profile current and projected. That means calculating connected loads, demand factors, fault levels, and future expansion headroom before we select a single piece of equipment. The concept design establishes your system architecture: generation capacity, voltage levels, distribution topology, and technology mix (diesel, hybrid, or BESS-integrated).

HV & LV Electrical System Design

Full electrical design for both high-voltage (11kV, 22kV, 33kV) and low-voltage (415V) systems. This includes single-line diagrams (SLDs), cable sizing and routing, switchboard and MCC design, earthing and bonding calculations, and short circuit and load flow studies. Designed to AS/NZS 3000 and relevant mining standards.

Hybrid & Renewable System Design

Integration of solar PV, battery energy storage (BESS), and diesel generation into a coherent hybrid system. This includes energy yield modelling, dispatch logic design, inverter and BESS sizing, grid-forming vs grid-following configurations, and protection coordination between generation sources.

Protection Relay Coordination & Studies

Protection coordination studies are the engineering work that determines how your system responds to a fault, which relay trips first, at what threshold, and in what sequence to isolate the fault without taking down the whole system. We produce coordinated protection settings for all HV and LV protection devices and document them for ongoing operations.

Commissioning Documentation

We produce the full commissioning test pack: test procedures, inspection checklists, relay test records, insulation resistance test results, and the handover documentation your operations team needs to manage the station day-to-day. Because we build what we design, our commissioning packs reflect what was actually installed, not just what was drawn.

Earthing System Design

Earthing design for HV systems is a safety-critical discipline done incorrectly, it creates touch and step voltage hazards during a fault. We design earthing systems in accordance with AS 2067 and carry out the required calculations to verify compliance, particularly for underground mining environments where the earthing requirements are more stringent.

Reliable Power, Delivered

Silverstone provides safe, efficient, and site-specific power solutions, backed by expert support and hands-on project delivery.

How We Approach Power System Design

Every power system design project starts from the same question: what does this site actually need to run reliably? Everything else follows from the answer.

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06 Why Choose Silverstone

Silverstone is an owner-operated, trusted, multi-disciplinary services provider, delivering integrated Power, Water, Civil, and Workforce solutions across the mining and resources sector.

Our in-house delivery model ensures seamless project execution — from design through to commissioning — with full QA/QC, HSE, and compliance built into every stage. We are committed to building long-term partnerships through a client-first approach, transparent communication, and an unwavering focus on performance, value, and continuous improvement. That is the Silverstone Standard.

Power System Design - Questions We Get Asked

Silverstone combines technical expertise, in-house capabilities, and hands-on industry experience to deliver reliable, safe, and efficient power solutions. Our client-focused approach ensures every project — from temporary installations to large-scale, permanent power stations — is tailored to site-specific requirements. With a commitment to safety, sustainability, and operational excellence, we provide end-to-end solutions that keep operations running smoothly, reduce risk, and deliver long-term value.

What does a power system design scope include for a mining site?

A power system design scope for a WA mining site typically covers: site load analysis and demand studies, system concept design and technology selection, single-line diagrams (SLDs), HV and LV equipment specifications, cable sizing and routing, protection relay coordination studies, earthing system design, and commissioning test documentation. The exact scope depends on the system size, voltage levels, and whether the design includes diesel-only, hybrid, or BESS-integrated generation. Silverstone provides complete design scopes from concept through to commissioning-ready documentation.

What voltage levels does Silverstone design power systems for?

We design power systems across LV (415V) and HV ranges including 6.6kV, 11kV, 22kV, and 33kV. For most remote mining sites in the Pilbara and Goldfields, we work at 11kV distribution with 415V LV reticulation, stepping up from generators via HV transformers. We also design underground HV systems for operating mines where surface-to-underground power distribution is required.

Can Silverstone design a hybrid solar-diesel power system for an off-grid mine site?

Yes. We design hybrid solar-diesel systems for off-grid mining operations across Western Australia. Our hybrid design scope includes solar PV yield modelling, BESS sizing, diesel generator sizing for firm capacity, dispatch logic design, and protection coordination between all generation sources. We’ll also give you an honest assessment of whether the fuel savings justify the capital cost on your specific site; not every site makes a viable hybrid candidate.

Do you produce as-built documentation and commissioning test packs?

Yes. Every power system design Silverstone delivers includes a commissioning test pack: test procedures, relay test records, insulation resistance and high-pot test results, and inspection checklists. After commissioning, we produce as-built drawings that reflect what was actually installed. Because we commission what we design, the as-built records are accurate. They’re produced by the same engineers who designed and built the system.

What Australian standards does Silverstone design to?

Our power system designs comply with AS/NZS 3000 (Wiring Rules), AS 2067 (Substations and high voltage installations), AS 4086 (Secondary batteries for use with stand-alone power systems), and relevant Western Power and Horizon Power network connection requirements for grid-connected or embedded generation applications. For mining-specific applications, we also design to the requirements of the Mines Safety and Inspection Regulations 1995 (WA).