Photovoltaic power generation refers to the use of solar photovoltaic cells to convert solar radiant energy directly into electrical energy.

The distributed photovoltaic power generation refers to a photovoltaic power generation facility built near the user's site and operated in a mode that is mainly self-consumed by the users, with excess power distributed and balanced among the electricity distribution system. The distributed photovoltaic power generation effectively utilizes the local conditions and resources, minimizes environmental pollution and generates high efficiency of energy use. Specifically, it fully takes advantage of local solar radiant energy, which works as important substitution of fossils.