This dataset represents electricity generation from distributed photovoltaic (PV) power plants in a specific region. Distributed PV systems typically refer to small-scale installations located close to electricity consumers, connected to low-voltage grids or directly supplying local loads. The distributed PV systems considered here are represented by monofacial single-glass and bifacial double-glass crystalline silicon PV modules installed on flat-roof photovoltaic power plants. Electricity generation is adjusted based on the local first-year equivalent full-load hours of fixed-tilt PV systems and the module lifetime. The service life of PV electricity generation components follows official regulatory standards, with a technical service life of 25 years for single-glass modules and 30 years for double-glass modules.