Is it worth installing energy storage power stations in household photovoltaic power stations at present?

Let's talk about energy storage photovoltaic power stations. Compared with ordinary photovoltaic power stations, people may not know much about energy storage. So today we will talk about what energy storage photovoltaic power stations are.

The picture above is a brand of energy storage inverter. It should be noted here that grid-connected inverters and energy storage inverters are different. There are roughly three types: 1. Grid-connected inverter 2. Energy storage inverter 3. Grid-connected energy storage inverter. Among them, the grid-connected inverter is relatively cheap, while the third type is the most expensive. Let us introduce:

Components: 1. Photovoltaic panels 2. Batteries 3. Inverters (most energy storage inverters have conversion functions)

1. Photovoltaic panels are still the photovoltaic panels in photovoltaic power stations, but you don’t need so many of them. Choose the number of photovoltaic panels based on your electricity consumption.

Second, the battery is still mainly lead-acid battery. There are many on Taobao. The battery is currently a big bottleneck restricting the development of energy storage power stations. The cost is high and the life is short. The replacement cost is also high. If converted into electricity bills, it may be lower than the return rate of investing in photovoltaic power stations.

3. There is nothing special about the inverter. If you need energy storage + grid connection, then the inverter should be selected from a manufacturer with grid connection permission. Otherwise, the power supply company will not agree to your grid connection, which involves functions such as island protection. If it is an intranet, you can purchase your favorite brand. The inverter mainly uses the DC power of the photovoltaic panel to charge the battery, and then converts the DC power of the battery into AC power for you to use. A reasonably designed inverter can convert the photovoltaic current into AC power in real time during the day, reducing the charging and discharging of the battery.

Energy storage power stations will only be worth promoting if the battery technology is significantly improved in the future. The energy density and cycle times of the battery will be substantially improved. In addition, the cost will be reduced. Otherwise, energy storage power stations will not be popularized in household environments.