Cables with low bending radius were found. Several issues concerning mounting structure and components were observed. It is recommended to (i) optimize the cable layout, (ii) increase cleaning cycles, (iii) retrofit the mounting structure, (iv) add module to module equipotential bonding, and (v) relocate shaded module tables, and (vi) install a weather station or at least an irradiation sensor on the module plane. The estimated production boost expected by the retrofitting actions lies between 7.7% and 10%.
Strings, tables, and inverters should have a suitable labelling (UV-resistant).
The cable layout can be optimized; the minimum cable bending radius is 10x the cable diameter.
Cleaning shall be conducted more effectively since module soiling is present despite weekly cleaning frequency reported by the on-site team.
Inverter shall be cleaned frequently.
If possible, the smaller tables shall be relocated to the top of a taller room, and the longer table with 12 modules shall be moved slightly away from the room that causes shading.
LA shall be installed on site.
A weather station, or at least an irradiation sensor on the module plane shall be installed.
Earthing connections between modules shall be added.
Rusted components and structure shall be replaced if possible. Vertical posts shall be realigned to reduce module misalignment. To prevent such problems, metal objects vulnerable to corrosion can be painted with zinc.