Solar system health check know exactly what you've got
Generation performance, battery health, settings audit, firmware review, and monitoring verification — all from your monitoring data. A written report with priority actions delivered within 24 hours.
Full remote audit of your system's performance, configuration, and battery health. Written PDF report with priority actions within 24 hours.
Book a health check → See all servicesWhat the health check covers
Four core areas reviewed from your monitoring data.
12+ months of actual generation versus expected output for your system size and location. Underperforming panels, inverter derating, and seasonal anomalies identified.
Charge and discharge patterns, depth of discharge, BMS events, estimated capacity versus rated capacity, and whether the battery is cycling correctly.
Export limits, CT clamp direction, charge schedules, system mode, tariff alignment, and firmware version. The most common sources of silent performance loss.
Confirm monitoring is live and capturing all data correctly. Check SEG export registration status, and flag any data gaps that could affect payments or warranty claims.
What we check during a solar health check
A comprehensive physical and performance audit across all major systems.
Visual inspection for hotspots, microcracks, soiling buildup, bird damage, and edge delamination that can degrade efficiency or void warranty.
Measured efficiency against manufacturer specification. Derating analysis, thermal throttling patterns, and firmware version validation.
Cell voltage balance, capacity degradation over cycles, charge/discharge curve analysis, BMS event logs, and estimated remaining usable capacity.
Comparison between panel strings and baseline. Identifies failing panels, wiring losses, and voltage imbalances that reduce generation.
Power quality analysis, frequency stability, and reactive power. Identifies issues that could affect grid export registration or tripping.
Continuity testing and resistance checks across all earth points. Critical for safety and compliance with BS7909 and BS7671.
Physical inspection for corrosion, mechanical wear, and proper installation. Verification that manual isolators operate smoothly and isolate completely.
Check for MC4 degradation, rodent damage, UV damage to cable jackets, and any loose or corroded connections that increase resistance and fire risk.
Verify CT clamps are correctly installed and directioned. Confirm monitoring data aligns with actual generation. Identify gaps or sensor failures.
Visual check for loose bolts, corrosion on rails, and structural movement. Ensures panels remain secure in high winds and can't slide or shift.
Why annual health checks matter
Solar systems naturally degrade at a rate of 0.5–0.8% per year under normal conditions. This is expected and typically not a concern. However, undetected faults — failed panels, inverter drift, battery imbalance, wiring issues — can accelerate this degradation significantly. A system losing 10% output silently over two years will have generated thousands of pounds less than it should have, whether through lost generation, missed export payments, or prevented battery charging when you need it most.
Annual health checks catch these failures early, before they compound. Many solar warranties explicitly require evidence of regular maintenance and professional inspection. If you need to claim under warranty later, a gap in documented health checks can invalidate your claim. Battery systems especially benefit from annual checks: cell balancing, firmware updates, capacity testing, and BMS event analysis reveal issues long before the battery becomes unusable.
Early detection of panel faults is particularly valuable — a single failing cell can cause cascading damage to the entire string if left unchecked. Our physical panel inspections identify hotspots, microcracks, and soiling buildup that reduce efficiency. Regular audits also ensure your system remains compliant with safety standards (BS7909, BS7671) and that export registration hasn't lapsed. The cost of an annual health check (£145) typically pays for itself within days if any configuration issues are found and corrected. Proactive maintenance prevents silent output losses and catches system underperformance before it costs money.
Health check vs remote diagnostic
Best for: Something is clearly wrong
Perfect for urgent faults that need quick diagnosis and possible remote fix.
Best for: Proactive maintenance
Full system audit — catches silent degradation and configuration drift before they cost money.
Not sure which to book? Use a remote diagnostic if you have an immediate fault. Choose a health check if your system seems fine but you haven't had it checked in over 12 months, or if you want peace of mind before relying on generation for financial decisions. See our remote diagnostic service for more details.
How it works
Grant temporary read-only access to your monitoring account — GivEnergy, SolarEdge, Sunsynk, Growatt, Solis, or whichever platform your system uses. Takes about 2 minutes.
We review 12+ months of generation data, battery performance history, system settings, and event logs. Any settings corrections that are safe to make remotely are applied during this step.
PDF report covering all four areas with a priority action list. Pass/flag status on generation, battery, settings, and monitoring. Clear recommendations with estimated cost where relevant.
If you want to talk through the findings or aren't sure how to act on a recommendation, a follow-up call is included. No time pressure.
Frequently asked questions
A health check benchmarks how your system is performing and configured right now — generation, battery, export, settings. A remote diagnostic is fault-focused: it finds what's broken. Book a health check if your system seems to be running but you want to verify it's working correctly. Book a diagnostic if something is clearly wrong — no generation, fault codes, battery not charging.
Yes. We review generation history, battery data, and settings via your monitoring account — we can't audit your system without it. If you've lost access or the account is registered to the original installer, see our monitoring account transfer service first.
Yes. New systems routinely have misconfigured settings — export limits set to zero, CT clamps installed backwards, charge schedules not aligned to the tariff. These cost money silently from day one. A health check typically pays for itself within weeks if any of these are found.
Findings are listed in priority order in the report. Settings issues we correct during the session where safe to do so. Hardware faults that need on-site attention are clearly flagged with recommended next steps. You're not committed to any further work — but a fixed-price quote is available if you want it.
Annually is ideal for most systems — particularly battery systems, which benefit from firmware updates and cell balancing. If your system is over 5 years old, two years without a check means accumulated drift that may be silently costing you. New systems (under 2 years) should have at least one health check to catch any commissioning errors. More frequent checks are worthwhile if you're relying on the system for financial projections (export income, battery cycling schedules, etc.).
The report will flag it clearly with a severity level and recommended next step. For hardware faults (failed panels, inverter issues, battery damage), we provide a fixed-price quote for on-site repair or replacement before any commitment. For safety issues, we flag them immediately and mark them as priority. You're in control of what happens next — the report is yours to act on in your own time.
Yes — we support all 19 major inverter brands, including SolarEdge, GivEnergy, Sunsynk, Growatt, Solis, Victron, Tesla, LG, Hyundai, and more. We also work with any panel manufacturer and battery type. If your system uses an unusual or very new brand, ask first — but we're confident we can audit it. The health check is fully brand-agnostic.
Know exactly what your solar system is doing
A full health check covers generation performance, battery health, settings review, and monitoring status. Written report within 24 hours telling you exactly where you stand — and what to prioritise.