There is a structural problem at the heart of most renewable energy projects. The developer or asset owner holds the financial risk, but the engineering expertise sits with the EPC contractor who is being paid to build the project as cheaply and quickly as possible. Those two interests are not always aligned.
An Owner’s Engineer (OE) exists to close that gap. AGILE Consulting Engineers provides independent Owner’s Engineer services for solar PV, Battery Energy Storage Systems (BESS), Virtual Power Plants (VPP), and hybrid renewable energy projects across Australia. We represent you, not the builder.
The term gets used loosely. In practice, an Owner’s Engineer is your independent technical authority throughout the project lifecycle. We review what the EPC proposes, assess whether it meets your performance specifications and applicable standards, identify risks before they become defects, and provide objective technical advice at every decision point.
This is distinct from project management, though the roles often work in parallel. A project manager tracks schedule, budget, and contractual milestones. The Owner’s Engineer focuses on whether the technical outcomes are sound, safe, and compliant. On complex projects, both are essential.
We engage at feasibility and early design stages to review technology selection, system architecture, grid connection strategy, and performance assumptions. Catching a flawed assumption at concept stage costs a fraction of what it costs to correct at construction or commissioning. We have seen projects where the DC/AC ratio assumptions embedded in the financial model bore no relationship to what the grid connection allowed. That kind of misalignment is identifiable early with the right technical review.
When you go to market for an EPC contractor or major equipment supply, we help you develop the technical specification, review tender responses against your requirements, and identify where a submission is technically non-compliant or where performance claims are not adequately substantiated. Lowest price and lowest risk are rarely the same thing.
Through the design phase, we review Issued for Construction (IFC) drawings and technical documentation from the EPC against the agreed specification and applicable standards. This includes single line diagrams, protection design philosophies, civil and structural drawings for foundations and mounting systems, and equipment data sheets. We raise technical queries and track their resolution.
For major equipment, Factory Acceptance Testing (FAT) at the OEM’s facility is the last opportunity to identify manufacturing defects or non-conformances before equipment is shipped to site. We witness FAT and Pre-Shipment Inspections (PSI) on behalf of the owner, working from agreed test protocols and checking results against specifications.
We conduct site inspections at key construction milestones to verify that what is being built matches the approved design, that installation quality meets the required standards, and that the construction programme is not taking shortcuts that will create problems at commissioning or during operation. We document findings and track corrective actions.
Commissioning is where design intent meets physical reality. We provide technical oversight during the Site Acceptance Testing (SAT) process, verify that the test protocols adequately demonstrate the system’s capability, and document any gaps between the tested performance and the contracted performance guarantees. This documentation is important for warranty and insurance purposes.
At handover, we review the as-built documentation package to confirm it accurately reflects what was constructed, verify that all outstanding technical defects have been resolved or formally accepted, and confirm that the operations and maintenance documentation is complete and fit for purpose.
If you are a developer or asset owner who does not have in-house engineering capability and you are about to enter an EPC contract, that is precisely the point where Owner’s Engineer engagement has the highest value. We are happy to outline what a proportionate scope of OE services looks like for your project size.
An EPC (Engineering, Procurement, and Construction) contractor is responsible for delivering the physical project. An independent BESS engineering consultant represents the owner’s interests, reviewing the EPC’s work for technical accuracy, compliance, and performance risk. We do not build the project ourselves, which is what makes our review independent and objective
The earlier the better. Engagement at feasibility or early design allows the OE to influence the technical specification, procurement strategy, and contract terms. However, OE engagement at later stages, such as construction monitoring or commissioning oversight, still adds significant value and is better than none.
Many project financiers and institutional investors do require, or strongly prefer, independent Owner’s Engineer involvement as part of their technical due diligence process. We can provide documentation of our engagement and scope to support your financing requirements.
Yes. While we are based in Darwin and have specific expertise in Northern Territory grid conditions, we provide Owner’s Engineer services for solar, BESS, and hybrid projects across Australia, including NEM-connected projects in Queensland, New South Wales, and other states.
The terms are sometimes used interchangeably, but in project finance contexts, an Independent Engineer (IE) typically refers to a technical advisor engaged by the lender or financier rather than the project owner. AGILE provides Owner’s Engineer services on behalf of the asset owner or developer.
Technical disagreements between an OE and an EPC are normal and are part of the process. We document our findings clearly, reference applicable standards and contract specifications, and work constructively toward resolution. Where disagreements cannot be resolved, we provide the owner with a clear technical assessment to inform their contractual position.
AGILE Consulting Engineers provides independent Owner’s Engineer services across Australia. Contact us to discuss your project requirements.
