logo
Send Message
Products
NEWS DETAILS
Home > News >
Why can solar panels generate electricity when it's not sunny?
Events
Contact Us
86-0755-2708-2120
Contact Now

Why can solar panels generate electricity when it's not sunny?

2024-11-29
Latest company news about Why can solar panels generate electricity when it's not sunny?

Solar panels can still generate electricity when it's not sunny because they can capture diffused sunlight, which is scattered by clouds and the atmosphere. Even on cloudy or overcast days, some sunlight reaches the earth’s surface, although it’s less direct and weaker than on a sunny day. Solar panels are designed to capture this diffused light and convert it into electricity through the photovoltaic (PV) effect.

While the efficiency of solar panels is lower when it's cloudy or overcast (since the intensity of sunlight is reduced), they can still generate electricity, just at a lower rate than on sunny days. The amount of electricity generated depends on factors like cloud cover, the angle of the sun, and the type of solar panel, but as long as some light reaches the panel, it will be able to produce some power.

In short, solar panels don’t need direct sunlight to work—they can function with indirect or scattered sunlight as well.

 

The impact of cloudy days on the efficiency of solar panel power generation is mainly reflected in the following aspects ‌ :
Dramatically reduced power generation efficiency ‌ : Solar panels are often much less efficient at generating power on cloudy days. On sunny days, the power generation efficiency of solar panels can reach a higher proportion of their rated power (such as 70%-90%), while on cloudy days, the power generation efficiency may only be about 10%-30% of the rated power ‌.
 
‌Effect of cloud thickness ‌ : Cloud thickness affects power generation efficiency. On cloudy days with thin clouds, the drop in efficiency is smaller, while dense clouds can result in even lower efficiency, perhaps 5% to 10% of that on sunny days ‌.
 
‌The effects of different types and qualities ‌ : Different types and qualities of solar panels also behave differently on cloudy days. High-quality solar panels can still generate electricity in low-light conditions, but the output is obviously not comparable to sunny days.
latest company news about Why can solar panels generate electricity when it's not sunny?  0
Practical solutions to fluctuations in power generation on cloudy days include ‌ :

Install energy storage system ‌ : energy storage battery, can store excess power in sunny days, used in cloudy days or at night, keep the power supply stable ‌.

‌System Design optimization ‌ : Design the optimal solar and energy storage system according to each household's electricity demand and geographical location, ensuring that there is enough electricity to support daily needs even on cloudy days.
Regular maintenance and monitoring ‌ : through the remote monitoring system, we can know the power generation situation of the solar energy system at any time, predict the impact of weather changes on power generation in advance, and take countermeasures ‌.
latest company news about Why can solar panels generate electricity when it's not sunny?  1
 
To sum up, the solar panel can still generate electricity on cloudy days, but its efficiency will be greatly reduced, you can install energy storage system, optimize system design and regular maintenance and monitoring to deal with the fluctuation of power generation brought by cloudy days.
Products
NEWS DETAILS
Why can solar panels generate electricity when it's not sunny?
2024-11-29
Latest company news about Why can solar panels generate electricity when it's not sunny?

Solar panels can still generate electricity when it's not sunny because they can capture diffused sunlight, which is scattered by clouds and the atmosphere. Even on cloudy or overcast days, some sunlight reaches the earth’s surface, although it’s less direct and weaker than on a sunny day. Solar panels are designed to capture this diffused light and convert it into electricity through the photovoltaic (PV) effect.

While the efficiency of solar panels is lower when it's cloudy or overcast (since the intensity of sunlight is reduced), they can still generate electricity, just at a lower rate than on sunny days. The amount of electricity generated depends on factors like cloud cover, the angle of the sun, and the type of solar panel, but as long as some light reaches the panel, it will be able to produce some power.

In short, solar panels don’t need direct sunlight to work—they can function with indirect or scattered sunlight as well.

 

The impact of cloudy days on the efficiency of solar panel power generation is mainly reflected in the following aspects ‌ :
Dramatically reduced power generation efficiency ‌ : Solar panels are often much less efficient at generating power on cloudy days. On sunny days, the power generation efficiency of solar panels can reach a higher proportion of their rated power (such as 70%-90%), while on cloudy days, the power generation efficiency may only be about 10%-30% of the rated power ‌.
 
‌Effect of cloud thickness ‌ : Cloud thickness affects power generation efficiency. On cloudy days with thin clouds, the drop in efficiency is smaller, while dense clouds can result in even lower efficiency, perhaps 5% to 10% of that on sunny days ‌.
 
‌The effects of different types and qualities ‌ : Different types and qualities of solar panels also behave differently on cloudy days. High-quality solar panels can still generate electricity in low-light conditions, but the output is obviously not comparable to sunny days.
latest company news about Why can solar panels generate electricity when it's not sunny?  0
Practical solutions to fluctuations in power generation on cloudy days include ‌ :

Install energy storage system ‌ : energy storage battery, can store excess power in sunny days, used in cloudy days or at night, keep the power supply stable ‌.

‌System Design optimization ‌ : Design the optimal solar and energy storage system according to each household's electricity demand and geographical location, ensuring that there is enough electricity to support daily needs even on cloudy days.
Regular maintenance and monitoring ‌ : through the remote monitoring system, we can know the power generation situation of the solar energy system at any time, predict the impact of weather changes on power generation in advance, and take countermeasures ‌.
latest company news about Why can solar panels generate electricity when it's not sunny?  1
 
To sum up, the solar panel can still generate electricity on cloudy days, but its efficiency will be greatly reduced, you can install energy storage system, optimize system design and regular maintenance and monitoring to deal with the fluctuation of power generation brought by cloudy days.
Sitemap |  Privacy Policy | China Good Quality Home Battery Energy Storage Supplier. Copyright © 2023-2025 Shenzhen Yunfan Power Technology Co., Ltd. . All Rights Reserved.