The low power generation can be checked from the following aspects:

1. Locate the problem. Check the system through the daily power generation and monitoring software to determine whether the inverter is not working, or the strings are burned, missed, or the strings are generating electricity normally?

Are the operating voltages of the strings similar, whether there is current, and whether there are strings with low current?

2. Surrounding environment On-site inspection of the building parapet height of the photovoltaic power station, floor coverings (lightning rods, exhaust and dust discharge channels, etc.), surrounding coverings (tall buildings, trees, etc.), will they form a block sooner or later?

Are there any corrosive factories around, such as ironworks, chemical plants, etc. Is the dust and powder layer on the components serious?

Whether the lower edge of the module is covered by water stains and dust. Whether the module is ventilated. The power generation of the module installed in the unventilated greenhouse is lower than 10%!

Whether the inverter is installed under direct sunlight, overheating will cause the inverter to derate.

Is the cooling system (fan) of the inverter working normally?

3. System & power grid problem Are the component models, power, and number of blocks of each string of each MPPT consistent?

Are the components of the same string facing the same direction?

Is the number of module blocks in the string too small, and is the operating voltage of the string too low? (Single-camera is recommended to be greater than 420V, three-camera is greater than 630V) Is there too much over-provisioning of components, and does the inverter have power peak-shaving operation when the light is good?

Is the power grid connected to it stable? Is there intermittent grid voltage that is too high and causes the inverter to shut down?