From an operational point of view, solar photovoltaic systems have no radiation and pollution. But there will be battery and noise issues. Electronic equipment will make noise during operation, but it is within a controllable range. Batteries, like cell phone and camera batteries, have a small dose of radiation, but that's not a big deal.

The reason why solar photovoltaic systems are underpowered in winter is that power generation is indeed affected by temperature. Factors that directly affect power generation include radiation intensity, sunshine time and operating temperature of solar cells. In winter, the radiation intensity is weak, the day duration is short, and the power generation is generally less than that in summer, which is a normal phenomenon. The distributed photovoltaic system is connected to the grid. As long as the grid has power, there will be no power shortages and blackouts for household loads.