Solar Panel Performance Checks
If your solar panel output has fallen or the solar panel monitor shows figures, we compare generation with data, inspect the installation and explain why. Contact us to arrange performance check across Warwickshire, Oxfordshire, Gloucestershire and the North Cotswolds.
Check Your Output
Is your generation lower than expected, or are monitor readings unclear? We compare performance, identify faults and explain next steps.
What a Solar Panel Performance Check Covers
If the panels appear intact but generation figures no longer make sense, a performance check helps pinpoint the discrepancy. It also suits homeowners who have changed their monitoring setup or want a reliable baseline before deciding on further work.
We review readings and monitoring history, then distinguish confirmed faults from issues needing further investigation.
Generation data reviewed
If the figures no longer add up, we compare recent generation with the available monitoring history and expected seasonal patterns.
Monitoring checked
If the app or display is showing incomplete or confusing information, we check the monitoring setup and identify whether the issue is with data or generation.
Installation inspected
If the system looks sound from the ground, we inspect the accessible panels, inverter and visible cabling for signs that could affect output.
Faults separated from uncertainty
If the evidence points to a fault, we explain what we have found. If more testing is needed, we make that clear before recommending work.
Clear findings provided
You receive a straightforward explanation of the readings, the installation condition and any practical limits on the check.
Next steps explained
If the check identifies a repair, monitoring change or further investigation, we set out what it involves before you decide.
From Monitoring Data to Clear Next Steps
Your performance check ends with a documented comparison of expected and recorded solar panel output, inspection findings and recommended action. We’ll test relevant equipment safely, identify monitoring faults where possible and set out any further repair or investigation clearly.
Find Where Generation Has Dropped
If the panels are producing less, we compare the inverter, generation meter and monitoring data to narrow down the cause.
Inspect the Panel Array
Dirt, shading, damaged panels or changes around the roof can affect output, so we inspect the array and its cable routes.
Check the Inverter and Monitoring
If the app shows missing or inconsistent readings, we test the inverter and monitoring connection to separate a display fault from a generation fault.
Test the Electrical Connections Safely
We safely test relevant isolators, cables and connections for signs of damage, loose terminals or other electrical faults.
Receive Findings You Can Act On
You receive a clear record of the readings and checks, with repair, monitoring or further investigation explained before any additional work starts.
Questions About Solar Panel Performance Checks
How much does a solar panel performance check cost?
Please send recent monitor readings, generation history, installation details and any fault messages. We’ll use these alongside site access information to assess the issue and provide an accurate quotation.
Can a solar panel performance check be completed without roof access?
Often, yes. We can assess monitor data, inverter readings and accessible equipment from ground level, but confirming panel, cabling or roof faults may require safe roof access later for confirmation.
How long does a solar panel performance check take?
The time depends on system size, data available and whether equipment is accessible. We’ll explain the expected duration before starting, allowing additional time where testing or roof access is needed.
Will a solar panel performance check identify an inverter fault?
If data or testing points to the inverter, we’ll explain the fault, check related cabling and generation controls, and recommend repair or replacement where appropriate after confirming the cause fully.
Can performance data show why solar panel output has dropped?
Yes. We compare monitor history with weather, inverter readings and generation across the system to identify whether reduced output reflects shading, equipment faults, communication errors or a significant underlying performance.
What Happens During a Solar Performance Check
If the figures have changed without explanation, send us recent readings before we attend. We’ll tell you what information and access we need, then keep the checks focused on the panels, inverter, meter and monitoring connection. Our NICEIC-registered team carries out electrical testing safely, with no unnecessary dismantling.
If the check identifies a separate repair or needs further investigation, we explain the evidence, likely work and any limits of the assessment. You receive a written quotation before work starts, so you can decide what happens next without surprise costs.
A lower figure isn't always a panel fault
Season, weather, shading and household demand can all affect the figures you see. We separate normal variation from a genuine performance problem before recommending work.
We compare the right figures
A cloudy-day reading cannot be compared fairly with a clear-day result. We consider the date, weather, shading and whether the figure shows generation, export or household use. That prevents an app reading or seasonal change being treated as a panel fault.
We check monitoring separately
An app or portal can stop updating even when the panels are still generating. We check the monitoring path rather than assuming the panels have failed.
Generation and monitoring are different checks
We compare available readings from the inverter, generation meter and monitoring platform. If the panels are producing but the data is not reaching the app, we explain where the problem sits and what information is still reliable.
Safe access comes first
Some inspections can be completed from ground level or inside the property. If a roof inspection is not safe or suitable, we explain what that limits before drawing conclusions.
Clear limits on the assessment
We assess access, roof condition and the position of the equipment before inspecting it. We won’t ask you to accept an unconfirmed diagnosis where part of the system cannot be reached safely. The written findings will distinguish what we tested from what needs further investigation.
You decide on further work
A performance check does not commit you to a repair or replacement. We explain the evidence behind each recommendation so you can choose the appropriate next step.
No work without your approval
If we find a fault, we set out the likely repair, any access requirements and the parts involved. If more investigation is needed, we explain why. Any additional work is quoted before it starts, leaving you with a clear cost and a documented basis for the decision.
Once the check is complete, you’ll know whether the lower figure needs attention or reflects conditions outside the installation. We’ll explain what the result means for the system and what you can reasonably expect from it.
To arrange a check, contact us with the property address and any relevant system details. We’ll confirm the next step so you can decide how to proceed with clear information.