Rooftop distributed photovoltaic power stations are grid-connected solar power stations installed on the rooftops of industrial and commercial enterprises or any idle rooftops. The electricity generated by the power station is consumed locally and used nearby, which can not only save users electricity bills, but also obtain national electricity subsidies. It is a good choice for many enterprises, institutions and private users to turn idle resources into valuable assets.
Features of rooftop distributed photovoltaic power stations
A rooftop distributed photovoltaic (PV) power station system mainly consists of solar PV modules, string grid-connected inverters, distribution boxes, and installation structures. It has the following main characteristics:
1. Low pollution and outstanding environmental benefits. Rooftop distributed photovoltaic power generation projects generate electricity without noise or pollution to the air or water.
2. Power generation and consumption can coexist. Large-scale ground-mounted power plants generate electricity by stepping up the voltage and connecting to the power grid, operating solely as power generation plants; while rooftop distributed photovoltaic power generation connects to the distribution grid, allowing for both power generation and consumption, and requiring local consumption as much as possible.
3. Relatively small output power. Generally speaking, the capacity of a rooftop distributed photovoltaic power generation project is within a few kilowatts. Unlike centralized power plants, the size of a photovoltaic power plant has little impact on power generation efficiency, and therefore little impact on its economics. The return on investment for small photovoltaic systems is not lower than that for large ones.
Rooftop distributed photovoltaic power generation is a new type of power generation and comprehensive energy utilization method with broad development prospects. It advocates the principles of local power generation, local grid connection, local conversion, and local use. It can not only effectively increase the power generation of photovoltaic power plants of the same scale, but also effectively solve the problem of power loss during voltage boosting and long-distance transmission.
