Maintenance
Periodic inspections, rapid fault remediation, and proactive upkeep — Eturn maintenance keeps your PV system performing at design output for the full duration of its operational life.
Peak performance for the full asset lifetime
Solar PV is a long-duration asset — but its output is only reliable if it's maintained. Dust accumulation, connector oxidation, inverter wear, and structural degradation add up to measurable yield loss over time that passive monitoring alone cannot reverse.
Eturn's maintenance service combines scheduled preventive inspection visits with rapid-response corrective call-outs — backed by our ETURN Live monitoring platform, which automatically generates work orders when production deviates from target.
Every aspect of PV upkeep, covered
Preventive, corrective, and predictive maintenance — delivered by certified technicians with direct access to spare parts and manufacturer support.
Scheduled Preventive Visits
Annual or bi-annual inspection visits covering module condition, mounting torque checks, cabling and connector inspections, inverter servicing, and earthing continuity tests.
Corrective Fault Call-Outs
Rapid-response on-site attendance for P1 and P2 faults — inverter failures, string outages, protection trips, and grid connection issues — with target response under 48 hours.
Thermal & Electrical Testing
Periodic thermal imaging, IV-curve analysis, and insulation resistance testing to detect degrading components before they fail and cause broader system losses.
Component Replacement
Modules, bypass diodes, optimisers, junction boxes, inverters, and monitoring hardware — sourced from our procurement network and replaced on-site by certified technicians.
Inverter Servicing & Firmware
Filter replacement, fan servicing, firmware updates, and parameter optimisation for all major inverter brands — keeping power electronics within the manufacturer's service envelope.
Emergency Generator Support
For off-grid and hybrid systems, we also cover battery management system checks, generator service coordination, and islanding protection verification.
Proactive maintenance, reactive when needed
Our O&M programmes combine planned inspection cycles with 24/7 fault monitoring — so we're never waiting for a problem to grow before we act.
O&M Contract Onboarding
We review system documentation, commission or verify ETURN Live monitoring, and produce a baseline condition report that underpins the maintenance schedule.
Scheduled Inspection Visit
Technicians carry out a full structured inspection to the agreed checklist — producing a signed-off report and a prioritised snagging list within 48 hours.
Corrective Works
Items from the inspection report are prioritised by impact on production. Approved works are scheduled and completed before the next inspection cycle.
Reactive Call-Out
When ETURN Live raises a fault alert, the maintenance team is dispatched under the agreed SLA — arriving on-site, diagnosing, and resolving within the contracted window.
Annual Review
We present an annual performance and maintenance summary — covering production vs. target, works completed, components replaced, and recommendations for the following year.
Why structured maintenance pays for itself
Maximise availability
Maintained systems in the Eturn portfolio average 99.1% availability — compared to industry averages of 95–97% for unmaintained assets. The difference is measurable in annual yield.
Protect your investment
Regular servicing prevents the kind of incremental degradation that shortens inverter life and accelerates module degradation. Well-maintained systems routinely exceed their 25-year design life.
Monitoring-driven maintenance
ETURN Live fault alerts automatically create maintenance work orders — eliminating the lag between detection and dispatch that costs yield in traditional reactive-only models.
One O&M partner
Eturn covers monitoring, maintenance, and renovation under one agreement. No handoffs between providers, no ambiguity over responsibility, no gaps in coverage.
Keep your system at peak output
Tell us about your site, system age, and current maintenance arrangement — we'll propose an O&M programme tailored to your asset and budget.