This dataset mainly describes the equipment and installation conditions required for grid-connected photovoltaic electricity generation systems with flat roof installations, including inverters, switchgear cabinets, capacitor compensation cabinets, and collector circuits. For the dismantling, recycling, and disposal stages of these related devices, it is assumed that the recycling rate for materials such as metals and electronic components is 90%, while PVC and similar materials are incinerated, and the remaining materials are disposed of via landfill.