Solar System Consulting

Technical Engineering Advice for Solar Professionals

Expert solar system consulting for installers, EPCs and developers — from equipment selection to compliance strategy.

WHAT WE DO

The most complex step in any solar project — handled

Grid connection applications for solar and renewable energy systems in Australia are complex, state-specific and often delayed by incomplete or incorrect documentation. The consequences of a rejected or delayed application flow through your entire project schedule — pushing commissioning dates, delaying revenue, and frustrating clients.

GreenBox manages the entire application process — from initial network assessment through to final connection agreement. Our engineers understand DNSP requirements across all Australian states and have a proven track record of first-time approvals.

We don’t just fill in forms. We engineer the application — performing network impact assessments, developing protection philosophies, preparing technical schedules, and managing all DNSP correspondence until your connection agreement is issued.

All States

COVERAGE

3–5 days

TURNAROUND

Fixed Fee

PRICING

Consulting covers

System design review & compliance gap analysis
Inverter & protection equipment specification
AS/NZS 4777.2 and DNSP requirement mapping
Single-line diagram review & mark-up
Protection coordination studies
DNSP application documentation support

CONSULTING SCOPE

30kW to 50MW+ projects

All project sizes and system types across Australia

WHY GREENBOX

Independent advice backed by hands-on engineering

Independent Technical Review

We are not aligned with any inverter brand, panel manufacturer or installer. Our advice is purely engineering-based — identifying real risks, not protecting commercial relationships.

AS/NZS Standards Expertise

Our engineers work daily with AS/NZS 4777.2, AS 61000, AEMO connection standards and state-specific technical requirements — giving you advice grounded in current compliance obligations.

Manufacture Our Own Protection Products

Where your project needs grid protection hardware, GreenBox can supply our own manufactured boards — pre-configured to AS/NZS 4777.2 and DNSP specifications for seamless compliance.

CONSULTING PROCESS

Seven-stage structured consulting process

Every engagement follows our structured process — ensuring nothing is overlooked, and you receive a clear, actionable report within the agreed timeframe.

Project Brief Review

We review your project documentation, proposed system design, equipment specifications and compliance objectives to scope the consulting engagement.

Technical Assessment

In-depth engineering review of your system design — inverter selection, protection coordination, cable sizing, switchgear specification, and interconnection approach.

Compliance Analysis

We map your design against relevant standards (AS/NZS 4777.2, AS 60364, DNSP technical specifications) and identify any gaps or risks.

Design Recommendations

A structured report detailing findings, design modifications, alternative approaches and priority actions — ranked by compliance risk and cost impact.

Equipment Specification

Where required, we provide detailed equipment specifications for inverters, protection relays, switchgear and monitoring systems to achieve compliance outcomes.

Documentation Review

Review and mark-up of single-line diagrams, protection schedules, commissioning plans and DNSP application documentation.

Sign-off Support

We assist with REC/engineer sign-off documentation, DNSP technical review responses, and inspection preparation where required.

BENEFITS

What consulting delivers for your project

Catch Problems Before They're Costly

Identifying design errors before equipment is ordered or installed is exponentially cheaper than rectification works on a commissioned system.

Compliance Confidence

Our engineers understand current DNSP technical requirements across all Australian states — so your design is assessed against what DNSPs actually require, not general standards alone.

Equipment Selection Clarity

With hundreds of inverter models and protection relay configurations available, our independent advice cuts through complexity to the right equipment selection for your project.

Structured, Actionable Reports

Not academic — practical. Our consulting reports rank findings by priority, provide specific remediation guidance and reference the relevant standard clauses.

Documentation Package

All consulting engagements include a written report with findings, recommendations and equipment specifications — suitable for use in DNSP applications and contractor briefings.

Experienced Engineers

Our consulting team has reviewed hundreds of solar system designs across all scales — from 30kW rooftop systems to multi-MW utility projects. You benefit from that pattern recognition.

WHO WE ADVISE

Clients who engage our consulting team

CASE STUDY

EPC Contractor — 1.8MW Victoria

CHALLENGE

An EPC contractor engaged GreenBox after their proposed inverter selection was creating protection coordination issues with the Jemena network. The design had already progressed to procurement stage when the DNSP raised concerns during the pre-application review.

SOLUTION

GreenBox conducted a rapid design review, identified the protection coordination conflict, recommended revised relay settings achievable with the existing inverters, and supplied a compliant grid protection board pre-configured to Jemena specifications.

RESULT

Project passed DNSP inspection first time. The EPC avoided a costly inverter swap that would have delayed commissioning by 6–8 weeks.

DNSP INSPECTION RESULT

0 st Pass

COMMON QUESTIONS

Consulting FAQs

Answers to the most common questions about our solar consulting service.

What does a solar consulting engagement cover?

Our consulting scope is flexible and defined by your project needs. Typical engagements include system design review, inverter and protection equipment specification, compliance gap analysis against AS/NZS 4777.2 and DNSP requirements, single-line diagram review, and DNSP application documentation support. We can also provide project-specific calculations, fault level assessments, and protection coordination studies.

Can you review designs produced by other engineers?

Yes — peer review and second-opinion consulting is one of our most common requests. We review designs from other engineers, installers and EPCs with complete objectivity. Our review reports are structured to clearly communicate findings to both technical and non-technical stakeholders.

Do you provide stamped or signed engineering drawings?

Yes. For clients requiring engineering drawings with a registered electrical engineer’s sign-off, we can provide stamped documentation suitable for DNSP applications, building permit submissions and contractor briefings. Stamped drawing fees are quoted separately from standard consulting.

How do consulting fees work?

Consulting engagements are quoted on a fixed-fee basis following a brief scoping call. Standard design review engagements for systems up to 1MW are typically completed within 3–5 business days. Larger or more complex scopes are quoted individually. We do not charge hourly — you receive a fixed price before work begins.

What size projects do you provide consulting for?

GreenBox provides consulting across the full project size range — from small C&I rooftop systems (30kW) through to utility-scale solar farms (50MW+). Our engineers have experience with single-inverter rooftop systems, multi-inverter C&I projects, battery-coupled systems, and large ground-mount solar farms requiring complex protection coordination.

Can you recommend inverter brands or specific models?

Yes. As an independent consulting firm not aligned with any manufacturer, we can provide objective inverter recommendations based on your system requirements, DNSP specifications, protection coordination needs, and budget. Where we identify equipment concerns with your proposed selection, we will clearly explain the technical basis for our recommendation.