What are the estimated operating and maintenance costs?

With proper and regular maintenance, photovoltaic modules have a very long lifespan. This becomes apparent when you have a look at the voluntary manufacturer warranties of up to 30 years.

The proper maintenance differs from one plant to another. Most importantly, plug connections, insulation and other exposed parts should be checked. In addition, a regular visual inspection for external damage as well as a cleaning of particularly soiled modules is recommended.