Periodic inspection and monitoring
|Day 30||Telephone call|
|Day 180||Telephone call|
|Year 1||On-site inspection|
|Year 2||On-site inspection|
Maintenance and guarantees
• Regular cleaning of the surface of the modules to remove any settled dust and other contaminants
• Annual review of the electrical connection points
• Internal cleaning of the inverter every couple of years and inspection of the moving parts (cooling fans)
• Functional control of security equipment
Buying the solar panel system is a long-term investment. The lifespan of the solar panel exceeds 30 years. Regardless of size, the solar panel system consists of the following components: solar panel modules, inverter(s), electrical equipment (wiring, circuit breaker and isolating equipment, protective devices), mechanical equipment (installation and, optionally, rotating devices).
Generally, two types of guarantee apply to the modules: the manufacturer’s product guarantee, which typically ranges from 5-10 years, and a so-called performance guarantee, which guarantees the performance of solar panels even after the given period of time. For example, 80% after 25 years.
The manufacturer usually undertakes a 5-year guarantee for the inverter. In some cases, it may be extended for an additional fee. Due to the technology, its life cycle is shorter than that of the solar panel modules.
The installer of the power plant undertakes a guarantee of generally 1 or 2 years for the electrical and mechanical assemblies and the implementation.
Our goal is to keep our customers satisfied and make them confident their quality solar panel system will operate reliably for years.
If the system is considered an investment, a 7-8% annual return can be achieved, all at very low risk.
The general idea that increasing overall output decreases the specific investment cost by kW is also true for solar panel systems.