There are three common grid access modes for photovoltaic power plants

There are three common grid access modes for photovoltaic power plants:

1. Spontaneous use

2. Spontaneously use surplus electricity to connect to the Internet

3. Full Internet access

Which access mode to choose after the power station is built is usually determined by the scale of the power station, power load and electricity price.

Self-consumption means that the power generated by the photovoltaic power station is only used by oneself and is not transmitted to the grid. When the power generated by photovoltaics is insufficient to supply the home’s load, the shortfall will be supplemented by the power grid. The grid-connected mode for self-use is widely used in various small photovoltaic power stations. Generally, the power generated by the power station is lower than the load power consumption, but the user’s electricity price is relatively expensive, and it is difficult to send out the power, or the power grid does not accept the power generated by the photovoltaic power station. A grid-connected mode that can be adopted. The self-consumption method has the advantages of relative independence and better economic benefits in areas with higher electricity prices.

However, when the scale of photovoltaic power station construction is large and there is a surplus of photovoltaic power generation, it will cause waste. At this time, if the power grid allows it, it will be more appropriate to choose to use the surplus power for self-use and grid. The electricity that is not used up by the load can be sold to the grid according to the electricity sales agreement to obtain additional income. It is usually required that units such as photovoltaic power stations that install self-generated surplus electricity for grid-connection must consume more than 70% of the power generated by the power station themselves.

The full grid access model is also a relatively common power generation access model at present. In this way, the electricity generated by the power station is sold directly to the power grid company, and the sales price usually adopts the local average on-grid electricity price. The user’s electricity price will remain unchanged, and the model is simple and reliable.