Photovoltaic installations are technologically advanced systems that enable efficient use of renewable energy and significantly lower electricity bills. As the popularity of this technology grows, more people wonder whether regular inspections of their PV system are truly necessary. In this article, we explain why regular maintenance of a PV system is crucial, what elements are included in photovoltaic service, and the benefits of conducting regular check-ups.
Overview of Photovoltaic System Inspections
Photovoltaic installations consist of several key components, such as:
- Photovoltaic Panels – responsible for generating electricity from solar radiation.
- Inverter (Converter) – converts direct current (DC) to alternating current (AC) used by electrical devices.
- Support Structure – ensures stability and the optimal tilt angle of the panels.
- Cabling – allows the flow of electrical energy within the system.
- Electrical Protection Systems – protect the installation from surges and damage.
Although individual components are usually covered by manufacturer warranties, and the installations themselves are designed to operate reliably for many years, regular inspections are essential. They help maintain the installation in optimal technical condition, increase its efficiency, and ensure safe operation.
What Does Photovoltaic Service Involve?
Photovoltaic service involves a comprehensive technical check of all components of the PV system. While the solar panels are highly durable, other components, such as the inverter, cabling, or support structure, are more prone to damage caused by weather, mechanical stress, or regular wear.
The scope of PV system inspections includes:
1. Photovoltaic Panels:
- Checking for mechanical damage such as cracks, scratches, or discoloration.
- Assessing the panel surface for dirt accumulation or debris build-up.
2. Inverter:
- Verifying the device’s operating parameters.
- Checking the cooling system and proper ventilation.
- Diagnosing any errors reported by the inverter.
3. Cabling and Electrical Connections:
- Inspecting cables for mechanical damage and corrosion.
- Checking the integrity of connections and the condition of insulation.
4. Support Structure:
- Assessing the stability of the structure and mounting points.
- Inspecting anti-corrosion coatings on structural elements.
- Evaluating damage caused by wind, snow, or soil erosion (for ground-mounted systems).
5. Monitoring System:
- Analyzing data related to system performance.
- Identifying potential power drops or irregularities in energy production.
Why is Photovoltaic Service Important?
Regular PV system inspections:
- Prevent costly failures: Early detection of issues such as loose connections or panel damage helps avoid more serious problems that could lead to a complete system shutdown.
- Increase efficiency: Clean and well-maintained panels operate more efficiently, resulting in more generated energy and greater savings.
- Ensure safety: Neglected photovoltaic installations can pose a fire hazard, especially if there is damage to the cabling or inverter.
- Protect warranty and insurance: Many manufacturers and insurers require regular inspections by certified specialists. Failure to conduct these inspections can void warranty protection or result in insurance claims being denied.
How Often Should a PV System be Inspected?
The frequency of PV system inspections depends on the type of installation and operating conditions:
- For residential PV systems: Inspections are recommended every 2–5 years, depending on warranty terms and individual needs.
- For commercial installations and solar farms: Inspections should be carried out at least once a year to ensure maximum performance.
What Issues Can an Inspection Detect?
During an inspection, the following issues may be identified:
- Mechanical damage to panels, such as cracks or delamination.
- Loose or corroded structural connections.
- Inverter failures indicated by abnormal operating parameters.
- Cable breaks or overloads.
- Dirt accumulation on panels, causing reduced efficiency.
- Corrosion or erosion of mounting elements, especially in ground-mounted systems.
Cost of PV System Inspections
In Poland, the cost of a PV system inspection for residential systems typically ranges from 300 to 1,000 PLN. The price depends on the size of the installation, the scope of the inspection, and the location. For solar farms, costs are determined individually, taking into account the specific characteristics of the installation.
Some companies offer service subscription plans that include regular inspections and remote system monitoring. This option allows for ongoing system oversight and quick response in the event of any irregularities.
Summary – PV System Inspection as an Investment in the Future
A PV system inspection is a key part of ensuring the longevity and efficiency of the system. Regular check-ups enable early detection of issues, prevention of major failures, and optimization of system performance. Through regular service, users can enjoy stable energy production for many years, avoid costly repairs, and maximize savings from renewable energy use.
Taking care of a photovoltaic system is an investment in its reliability and efficiency, making regular inspections not only a best practice but also a necessity for every PV system owner.
