How many kilowatts does a household photovoltaic power generation normally generate?

How many watts does a household photovoltaic power generation normally generate? This is also divided into grid-connected photovoltaic and off-grid photovoltaic.

If it is household grid-connected photovoltaic, the minimum is generally not less than 3kw and the maximum is not more than 50kw. The specific installed capacity depends on two aspects.

First, the roof area. The installation of home photovoltaic power generation depends on the roof area. Generally, the installed capacity is proportional to the roof area. When installing, the dimensions of the roof from east to west and north to south should be measured. If it is a tiled house, the front building and the tile surface should be measured separately. At the same time, the distance from the obstacles around the house to the house should be measured to prevent obstruction.

Second, transformer capacity. The installed capacity of household photovoltaics is closely related to the transformer capacity. Generally, it does not exceed 80% of the total transformer capacity. For example, a 400kw transformer has a maximum installed capacity of no more than 320kw. If the roof area of ​​the family is large, 50kw can be installed, but the transformer has a capacity of only 20kw, so only 20kw can be installed.

If you are installing off-grid photovoltaic, this depends on the power consumption of the load. Nowadays, few households install off-grid photovoltaic. The main reason is that the inverter and battery of off-grid photovoltaic are very expensive.