The PV plant has several broken modules. Some modules are installed in the risk wind zone. There is no lightning arrestor for on the roof. The building services vent directly under the modules. It is recommended to (i) replace to broken modules and rusty clamps, (ii) install a lightning arrestor (iii) continuous cleaning of the modules especially the bird drops (iv) restringing of shaded modules, and (v) yearly thermography inspection of the modules. The estimated production boost expected by the retrofitting actions lies between 5 and 12%.
There is no weather station, and hence no PR monitoring.
Damaged modules are connected to the system, resulting in low generation.
The cleaning cycles shall be increased based on the results of a soiling study that adjusts the cleaning needs to each season.
Burned modules should not be connected to the system to avoid further damages. It should be replaced or removed.
The exhaust ventilation system should be redirected to the opposite direction, to avoid higher temperature under the modules.
Rusted clamps and structure should be replaced if possible. To prevent such problems, metal objects vulnerable to corrosion can be painted with zinc.
It is recommendable to have lightning arrestor on the roof.
A weather station, or at least an irradiation sensor on the module plane, shall be installed so that the performance of the system can be properly determined.
A re-stringing of the modules from the shaded areas shall be conducted in the following way: modules with similar shading conditions shall be installed in the same string or at least assigned to individual MPPTs.