In winter, photovoltaic power generation can be affected by factors such as weak irradiation intensity, short sunshine duration, and low component temperature. Wondering how to deal with power shortages during this time? Don't worry! Today, let's unlock the secret weapon for winter photovoltaic power generation: "Photovoltaic panels in the snow can still generate electricity."

1. Reasons for Reduced Power Generation in Winter

The irradiation intensity is weakened. In winter, the direct point of the sun is located in the southern hemisphere. For the northern hemisphere, the solar altitude angle becomes smaller, the path of sunlight to the ground becomes longer, and the energy is more dispersed. This greatly reduces the irradiation intensity received by the photovoltaic components. 

The sunshine duration is shortened. Winter days are shorter, and nights are longer, which reduces the effective time for photovoltaic components to generate electricity. 

The operating temperature of the component has an important influence on its power generation efficiency. Generally speaking, the lower the temperature, the lower the power generation efficiency of the photovoltaic cell. In the cold winter, the temperature of the photovoltaic components is low, which will also lead to a reduction in power generation. However, the impact of temperature is relatively small compared to the irradiation intensity and sunshine duration.

2. Measures to Deal with Power Shortage

• Clear Snow in Time

Although photovoltaic panels will automatically clear some snow, it is recommended to clean them manually when heavy snow accumulates (pay attention to safety!). Studies have shown that after clearing the snow, the daily power generation of photovoltaic panels can be restored to more than 90% of the normal level.

• Regular Inspection and Maintenance

Cold winters may affect the inverter. Regular inspections ensure that it operates normally and ensures smooth power transmission. Especially in areas where the temperature is below -10℃, the operating efficiency of the inverter may drop by 10%, so special attention should be paid to the cold protection of the equipment.

• Reasonable Selection of Installation Inclination

When installing a photovoltaic power generation system, the appropriate installation inclination should be selected according to the local latitude and the characteristics of the winter solar altitude angle. For example, in high latitudes in the northern hemisphere, appropriately increasing the installation inclination of the photovoltaic array can better receive sunlight in winter and increase power generation. Through precise calculation and simulation, finding the best installation angle can effectively improve the power generation performance of the system in winter.

• Cooperate with Energy Storage System

With energy storage systems, electricity use becomes more flexible. There are many peak hours in winter, and with an energy storage system, the electricity generated during the day can be stored for later use, making it easier to use electricity at night. Studies have shown that households equipped with energy storage systems can save about 20% on peak and valley electricity bills in winter.

• Synergy with the Power Grid

For grid-connected photovoltaic power generation systems, when photovoltaic power generation is insufficient in winter, the power grid can be used to meet power demand. The power grid acts as a reliable source of electricity, providing stable support when the photovoltaic power generation system cannot meet all power needs. For example, during winter nights or continuous cloudy days, when photovoltaic power generation cannot meet all electricity demand, the power grid will automatically supplement the power to avoid shortages.

At Amosolar, we offer cutting-edge solutions with Trina Solar PV modules, including our Trina Solar 700W datasheet, Trina PV modules, and double glass solar panels for exceptional efficiency. As leading monocrystalline solar panel manufacturers and trusted PV panel manufacturers in China, we provide wholesale 450W solar panels and more, designed to ensure high performance even in winter. Let Amosolar be your trusted partner this winter for the best solar panels and energy storage solutions to keep your home powered and energy-efficient.