After the solar cells are connected in series, they can be encapsulated and shielded to form a large-area solar cell module, and then combined with components such as a power controller to form a photovoltaic power generation device. Photovoltaic engineering includes the research and development of solar power generation system engineering. Another meaning of photovoltaic engineering refers to equipment engineering that utilizes solar energy.

Generally speaking, the production of solar energy refers to the production of photovoltaic solar energy, called "photovoltaic". Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. A key element of the technology is the solar cell. After the solar cells are connected in series, they can be packaged and shielded to form a large-area solar cell module, and then combined with components such as a power controller to form a photovoltaic power generation device. Photovoltaic engineering includes the research and development of solar power generation system engineering. Another meaning of photovoltaic engineering refers to equipment engineering that utilizes solar energy.

Photovoltaic power generation systems are divided into off-grid photovoltaic systems and grid-connected photovoltaic systems.

Off-Grid PV System

Off-grid photovoltaic power station includes remote village power supply system, solar home power supply system, communication signal power supply, cathodic protection, solar street lights and other control systems, independent photovoltaic power generation, battery power supply.

Grid-connected PV system

Example of photovoltaic power generation A grid-connected photovoltaic power generation system is a photovoltaic power generation system that is connected to and delivers electricity to the grid. It can be divided into grid-connected power generation systems with and without batteries. The grid-connected power generation system with batteries is programmable and can be grid-connected or grid-connected as needed. It also has a backup power feature that provides backup power in the event of a grid outage. Grid-connected photovoltaic power generation systems with batteries are often installed in residential buildings; grid-connected power generation systems without batteries do not have the functions of power distribution and backup power, and are usually installed on larger systems.