Performance Audit
Solar systems are valuable long-term assets, but performance can decline over time if issues go unnoticed. Our retrospective performance audits provide a detailed assessment of how your system is operating, identifying faults, performance degradation and opportunities to restore lost generation.
By analysing historical system data alongside operational performance, we provide clear insight into where performance has fallen below expectations and where optimisation opportunities exist. This enables informed maintenance planning, supports performance recovery and helps ensure your solar investment continues to deliver expected returns.
Physical
Inspection
Our team of solar specialists review all on-site electrical infrastructure, meticulously examining for any indications of damage or wear.
Thermal
Inspection
Not all solar damage is visible to the naked eye. Our advanced thermal imaging cameras allow us to detect issues that may otherwise be missed.
Data
Analysis
Using the data available from your system, we use our state-of-the-art solar performance modelling techniques to assess your site’s performance.
Loss Calculations
& Report
All this data is condensed into a user-friendly report, featuring a site evaluation, fault list with projected revenue losses, and repair costs.
How it works
Our retrospective solar performance audit follows a structured four-stage process designed to identify hidden performance losses, diagnose system issues and provide clear guidance to restore and optimise solar generation.
Physical Inspection
Our expert technical team conducts a detailed on-site inspection of your system’s electrical infrastructure, assessing panels, wiring, inverters and associated components. This evaluation identifies damage, degradation or installation issues that may be impacting system performance and long-term reliability.
Thermal Inspection
Using advanced thermal imaging technology, we identify performance issues not visible during standard inspections. Thermal analysis highlights hotspots caused by faults such as defective wiring, connection issues or overheating components, enabling early diagnosis that helps prevent performance loss and supports long-term system lifespan.
Performance Data Analysis
Generation and operational data are analysed using solar performance modelling techniques to evaluate how the system is performing against expected output. This analysis identifies trends, inefficiencies and periods of underperformance, providing evidence-based insight into optimisation opportunities.
Loss Calculations & Performance Report
All findings are brought together in a clear, easy-to-understand report outlining identified faults and recommended corrective actions. By linking technical findings to operational and financial impact, the report helps you make informed decisions on the steps needed to optimise your system.
What Problems We Solve
Not knowing whether your solar system is actually performing as expected
Seeing generation fall over time without a clear reason why
Limited visibility of faults, wear and tear or day-to-day losses
Lacking the evidence needed to justify fixing, optimising or investing further
No clear baseline to understand what “good performance” really looks like
The Benefits for Organisations
Clear, independent insight into how your solar system is actually performing
Identification of lost or recoverable generation and the potential value associated with it
Evidence-led support for decisions on fixing, optimising or making informed improvements
Improved long-term performance, resilience and financial returns from your solar investment
Greater confidence that your system will keep performing reliably over the long-term
Is Your Solar System Underperforming?
If your solar system is not performing as expected, our Retrospective Performance Audits provide the insight needed to understand why. We identify underlying issues, quantify performance losses and provide clear recommendations to help restore generation and optimise system performance.
Contact TEST today to learn how a retrospective solar performance audit can help protect the long-term value of your solar investment.