Can Solar Lights Charge Through Windows?

Harnessing the power of the sun for energy has become increasingly popular, with solar-powered devices making their way into our daily lives. Solar lights, in particular, are a convenient and eco-friendly solution for outdoor lighting. But can these lights charge effectively through windows or windshields? In this article, we’ll delve into the intriguing world of solar technology and answer common questions like, can solar lights charge through windows?

1. Do Solar Lights Work Through Windows?

Solar lights are designed to absorb sunlight and convert it into energy, which is then stored for illumination. Windows, however, can affect the efficiency of this process. Direct exposure to sunlight is crucial for optimal charging. Windows may filter out the sun’s rays as much as 50%, but that doesn’t mean solar lights won’t work. They will work but their efficiency will be reduced.

2. Do Solar Lights Work Through Tinted Glass?

Tinted glass can indeed impact the performance of solar lights. The degree of tinting determines the amount of sunlight that reaches the solar panel. While lightly tinted windows may reduce charging efficiency by 50%, heavily tinted glass can significantly impede the process. It’s essential to consider the transparency of the glass when deciding where to place solar lights.

3. Efficiency Of Solar Lights Behind Window?

Placing solar lights behind a window can still yield some charging success, albeit at a reduced rate. The efficiency depends on factors like the type of glass, the level of tint, and the intensity of sunlight.

4. Why Place Solar Lights Behind Glass?

The decision to place solar lights behind glass is often driven by practicality or aesthetics. It allows users to enjoy the benefits of solar lighting indoors or protect the lights from harsh weather conditions. While it may not be as efficient as direct outdoor exposure, it can be a viable option in certain situations.

5. Can Solar Lights Be Charged Indoors?

Charging solar lights indoors is possible, but it requires strategic placement near a well-lit window or a source of artificial light. While the charging efficiency will be lower compared to outdoor exposure, it can be a convenient option during unfavorable weather conditions.

6. How to Charge Solar Lights Indoors?

For effective indoor charging, place the solar lights near a bright and consistent light source. Consider using LED bulbs as they emit light in a spectrum that is more favorable for solar panel absorption. Regularly clean the solar panels to remove any dust or dirt that may accumulate and hinder the charging process.


Do Solar Lights Work Through Plastic?

Yes, solar lights can work through plastic, but the type of plastic matters. Clear plastic allows more sunlight to pass through, while opaque or heavily tinted plastic can reduce charging efficiency greatly.

Do Solar Lights Work Through Plexiglass?

Yes. Similar to traditional glass, the efficiency of solar lights behind plexiglass depends on its transparency. Clear plexiglass allows for better charging compared to heavily tinted versions.

Should I Remove the Plastic Coating from New Solar Lights?

Yes, removing any protective plastic coating from the solar panels is crucial to ensure optimal sunlight absorption and maximum efficiency from your solar lights.


In conclusion, while solar lights can work through windows and various types of glass, their efficiency may be compromised. Understanding the impact of factors such as tint, material, and positioning is essential for maximizing the charging capabilities of solar lights. For good performance, it’s recommended to keep solar lights directly in sunlight most of the time.

Whether you place them outdoors or behind glass, harnessing solar energy offers a sustainable and environmentally friendly lighting solution.

Hyder Ali is a writer from Pakistan who writes well researched articles on different topics. He has been writing on Medium and other platforms for a long time. He tries his best to write correct information and help his readers solve their problems.

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