SOLAR SYSTEM HEALTH CHECKS & AUDITS
IN ESSEX & EAST LONDON
Is your existing solar installation generating as much as it should? KLIC ELECTRICAL carries out comprehensive solar system health checks and performance audits across Essex and East London — testing inverter output, inspecting panel condition, and reviewing your monitoring data to identify underperformance.
Solar Health Check in Essex & East London
Most solar panel owners have no reliable way to know whether their system is performing correctly — short of comparing their electricity bills before and after installation. In reality, solar systems can underperform by 20–30% or more due to shading that was not anticipated, panel degradation, inverter faults, poor original installation, or monitoring system failures that prevent any underperformance from being detected.
KLIC ELECTRICAL carries out professional solar system health checks and performance audits — using calibrated irradiance measurements, inverter output testing, and a review of your historical generation data against expected yield for your location and system size. We identify underperformance, determine the cause, and provide a clear report with recommended remediation actions.
What's Included in a Solar Health Check
Visual Panel Inspection
A thorough visual inspection of all solar panels — checking for cracking, delamination, soiling, bird damage, or physical defects that may be reducing output.
Generation Data Analysis
We download and analyse your inverter's historical generation data, comparing actual output against expected yield for your system size, orientation, and location using PVGIS reference data.
Inverter Performance Test
Inverter output voltage, current, and power factor tested and compared to manufacturer specifications — identifying partial faults, MPPT underperformance, and grid impedance issues.
String & Module Testing
String open-circuit voltage and short-circuit current measured and compared across strings to identify failed or underperforming panels, or shading-induced current mismatches.
DC & AC Wiring Inspection
Visual inspection of DC cable runs, MC4 connectors, and AC isolators — checking for physical damage, degraded insulation, or loose connections that may be causing resistance losses.
Performance Report & Recommendations
A clear written report detailing system performance vs. expected yield, any faults or issues identified, and prioritised recommendations — including estimated cost and potential generation improvement.
Signs Your Solar System May Be Underperforming
Underperformance is common — but only identifiable with professional testing against expected yield data.
Lower Generation Than Expected
If your electricity bills have not reduced as much as projected, or your inverter display shows lower daily generation than you expected, your system may be underperforming. A health check will quantify the gap and identify the cause.
Inverter Faults or Error Codes
Modern inverters display fault codes when they detect problems. Many homeowners see these codes and do not know what they mean or how serious they are. Our health check interprets all fault codes and tests the inverter's actual output.
Monitoring System Failure
If your monitoring app stopped updating years ago, you may have been generating less than expected without knowing. We restore monitoring connections and review historical data to identify when underperformance began.
Solar System Health Checks Across Essex & East London
Based in Aveley, Essex, KLIC ELECTRICAL covers the full Essex and East London area — including Thurrock, Basildon, Chelmsford, Brentwood, Romford, Barking, Dagenham, Ilford, Stratford, and all surrounding areas.
Solar Health Check — How It Works
A comprehensive on-site audit with a same-day written report and clear next steps.
Book Your Audit
Call or message us with your system details — installation date, panel count, inverter brand, and any concerns. We book a convenient date and time.
On-Site Testing
Our engineer carries out all visual inspections and electrical tests on the day — typically taking 2–3 hours for a standard domestic system.
Data Analysis
Generation data downloaded and compared against PVGIS expected yield for your system and location — quantifying any performance gap.
Report & Recommendations
Written report issued on the same day, detailing findings and prioritised recommendations. We quote for any remedial work identified.
Solar Audit Specialists in
Essex & East London
KLIC ELECTRICAL provides solar system health checks across Essex and East London for homeowners concerned about their system's performance. Whether you have had persistent inverter errors, received a lower SEG payment than expected, or simply want the peace of mind of knowing your system is performing as it should, our solar audit gives you the data and the answers.
How Much Electricity Should My Solar System Produce?
A rule of thumb for the UK is approximately 850 kWh per kWp per year for a south-facing 35-degree pitch roof. So a 4kWp system should produce around 3,400 kWh/year. East or west-facing systems produce roughly 80% of this (2,720 kWh). Using PVGIS, we calculate the expected yield for your specific system and location to the nearest kWh — and compare it to your actual inverter data.
Data-Driven Assessment
We compare actual generation data against PVGIS reference yields — not gut feeling. You get quantified performance data, not vague reassurance.
Inverter Testing
Calibrated electrical testing of inverter output across all MPPT channels — not just a visual check and a firmware update.
Same-Day Report
Written report issued on the day of your audit, including all measurements, findings, and prioritised recommendations.
Essex & East London
Local solar specialists — familiar with common installation issues in properties across our service area and available for fast response follow-up work.
Remedial Work Available
If your health check identifies faults, we can carry out remedial work — inverter replacement, panel replacement, rewiring, or re-commissioning — as a follow-on service.
NICEIC Approved
All testing and remedial electrical work is carried out by our NICEIC-approved team, with electrical certificates issued for any remedial installation work.
What Our Customers Say
Real reviews from satisfied customers across Essex & East London
“Highly recommend! Professional, reliable, and was early on arrival than stated. Will use your services in the future — thanks again.”
Adam Ramo
Verified Customer
“Great service from KLIC Electrical. Would highly recommend. Professional and polite. I only needed a small job doing, and it was sorted in less than 24 hours of asking. Thank You!!”
Mandy Holmes Nicholls
Verified Customer
“Kris spent a lot of time researching the solution to my odd electrical problem, he persevered and was able to fix it a lot cheaper than either of us had ever expected! I would definitely recommend KLIC Electrical for any job, I will certainly be using him again!”
Teresa O'Keeffe
Verified Customer
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Solar Health Check FAQs
Questions about solar system performance audits in Essex and East London.
A comprehensive solar system health check for a standard domestic installation (up to 4kWp, single inverter) typically costs £150–£250, including on-site testing, generation data analysis, and a written report. This is usually recovered within months if the audit identifies and resolves underperformance costing you money.
Absolutely. Solar panels degrade gradually over time (around 0.5% per year for premium panels, 1% for budget panels), and inverters typically have a 10–15 year lifespan. A 10-year-old system may have panels performing significantly below their original specification, or an inverter approaching the end of its life. Our health check gives you a clear picture of your system's remaining performance and what remedial investment, if any, makes financial sense.
Monitoring failures are more common than you might think — Wi-Fi changes, router replacements, and firmware issues can all cause monitoring connections to fail. The problem is that without monitoring, underperformance goes undetected. Contact us — we can restore monitoring connectivity and review historical data to identify whether underperformance has been occurring undetected.
In most cases, yes. String testing can identify a string (group of panels in series) that is underperforming, and in many cases we can further isolate specific panel faults using open-circuit voltage testing at module level. For complex panel-level diagnostics, thermal imaging via drone is the most definitive method — we can advise on this if needed.
No. An EICR (Electrical Installation Condition Report) assesses the fixed wiring and components of a solar installation for electrical safety compliance — it does not assess energy performance. A solar health check focuses on generation performance, inverter output, and panel condition. Both are valid assessments — they serve different purposes. We can carry out both concurrently if required.
We are familiar with inverters from SolarEdge, SMA, Fronius, Solax, GivEnergy, Growatt, and most other brands commonly found in the UK market. Some inverters require brand-specific software tools for diagnostics — we carry these for the most common brands. Contact us with your inverter brand and model before booking to confirm.
We Cover Essex & East London
KLIC ELECTRICAL is based in Aveley, Essex and provides electrical installation services across the following areas:
Don't see your area? — we may still cover you.
Get Your
Free Quote Today
Whether it's a routine installation, an emergency call-out, or a full renewable energy system — our team is ready to help. Contact us for a free, no-obligation quote.