Net Zero Compare

Powerfoyle: Harnessing Light for Sustainable Energy Anywhere

Written by Polina Martinuka
Published October 22nd, 2024
9 min read

Summary

Powerfoyle is an innovative solar cell technology that converts light into sustainable energy, designed for both indoor and outdoor use. Flexible, durable, and high-performing under various light conditions, it powers devices like remote controls, sensors, and electronic shelf labels, reducing the need for batteries and supporting eco-friendly solutions.
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Details

Name
Powerfoyle
Date of establishment
2009
Organization

Deep dive

Patented Solar Cell Technology

Powerfoyle is Exeger’s signature solar cell technology, designed to convert both natural and artificial light into usable energy for consumer electronics and other applications. It is a flexible, durable, and lightweight solar cell material that can be seamlessly integrated into various products, providing continuous power without the need for external charging. Unlike traditional solar panels, which are typically rigid and require direct sunlight to function optimally, Powerfoyle is designed to work efficiently with ambient indoor light as well, making it highly versatile.

"Powerfoyle is the world’s most adaptable solar cell. Thanks to our unique screen printing technique, our solar cell can be customized to match each product and the brand design. We improve products without compromising on design."
Source: exeger.com

Source: https://www.exeger.com/powerfoyle/design-and-integration/
Source: https://www.exeger.com/powerfoyle/design-and-integration/

What Powerfoyle Does

Powerfoyle harnesses light energy from various sources, including sunlight and indoor lighting, to power devices by directly embedding the technology into the surface of the product. This enables electronics to be self-charging, providing energy independence for consumers and reducing the need for frequent recharging or battery replacement. Essentially, devices with Powerfoyle can continuously charge themselves throughout the day when exposed to light.

Key Applications

  • Consumer Electronics: Powerfoyle is particularly popular among consumers for electronics such as headphones, wearables, and wireless devices. For instance, companies like Urbanista and JBL have launched solar-powered headphones that utilize Powerfoyle, allowing users to charge their headphones while using them in daylight or indoor lighting.

  • Wearables: Smartwatches, fitness trackers, and similar wearable devices benefit from the self-charging feature, reducing the need for cables or docking stations.

  • IoT Devices: Powerfoyle’s ability to work with low-light conditions makes it suitable for Internet of Things (IoT) devices that often need constant, low-power energy input.

  • Smart Furniture & Automotive: Powerfoyle can also be integrated into non-electronic surfaces like furniture, automotive interiors, and backpacks, enabling them to power embedded sensors or charge portable devices.

Technology

Powerfoyle is based on dye-sensitized solar cell (DSSC) technology, but with unique enhancements that allow it to operate efficiently in a wider range of light conditions, including low and artificial lighting. DSSC is a third-generation solar technology known for being light, flexible, and more adaptable compared to traditional silicon-based solar cells. Exeger has further developed and refined this technology to improve its efficiency, durability, and versatility.

These cells are designed to be thin, flexible, and lightweight, which allows them to be integrated into diverse surfaces and products without adding bulk or compromising design.

"The breakthrough innovation that makes Powerfoyle a superior technology is a completely new material with 1000 times lower resistance than the conducting layer typically found in any flexible solar cell. That means much larger cells can be produced without the need for current collectors as seen in all other solar cells. This makes Powerfoyle the most customizable solar cell on the market."
Source: exeger.com

Powerfoyle is designed to function in both direct sunlight and indoor environments, which greatly expands its application potential, particularly in urban or indoor settings. The material can be customized in terms of shape, size, colour, and texture, making it visually appealing and versatile for product integration.

Source: https://www.exeger.com/powerfoyle/
Source: https://www.exeger.com/powerfoyle/

Сomparison between Powerfoyle Indoor and Powerfoyle Hybrid

Feature

Powerfoyle Indoor

Powerfoyle Hybrid

Technology

Dye-sensitized solar cell (DSC) architecture, optimized specifically for indoor light environments.

Dye-sensitized solar cell (DSC) architecture, optimized for indoor light environments.

Performance

Designed for optimal performance under low-light indoor conditions, unaffected by partial shading, flexible, and durable.

High performance under indoor light, unaffected by partial shading, flexible, and durable.

Applications

Suitable for indoor products such as remote controls, trackers, sensors, and shelf labels.

Designed for use in indoor products such as remote controls, trackers, sensors, and shelf labels.

Current Output (at 3.7 V)

From 50.7 µA at 100 lux to 510.2 µA at 1000 lux.

From 73.5 µA at 100 lux to 650.4 µA at 1000 lux.

Spectral Response

Operates within the 400-750 nm range.

Operates within the 400-750 nm range.

Temperature Range

Ideal operating temperature: 10-30°C, with an overall range of -20°C to 45°C.

Ideal operating temperature: 10-30°C, with an overall range of -20°C to 45°C.

Weight

0.11 g/cm² to 0.16 g/cm² depending on the top layer and texture.

0.12 g/cm² to 0.17 g/cm² depending on the top layer and texture.

Light Source Compatibility

Optimized for low indoor lighting conditions like fluorescent, LED, and natural light through windows.

Optimized for a broader range of indoor lighting, with more robust performance in higher indoor light conditions.

Sources: exeger.com, exeger.com

Products that incorporate Powerfoyle

Audio Devices

Urbanista Los Angeles: Wireless Over-Ear Headphones

  • Overview: The Urbanista Los Angeles headphones are the first self-charging, solar-powered over-ear headphones that utilize Powerfoyle technology. Designed to charge through both natural sunlight and indoor lighting, they offer a potentially limitless battery life as long as the headphones are exposed to light.

  • Key Features:

    • Solar Charging: Continuous charging with Powerfoyle, which converts light into energy. It charges in all light conditions, making it highly convenient for both indoor and outdoor use.

    • Noise Cancellation: Equipped with Active Noise Cancellation (ANC), offering a premium audio experience in various environments.

    • Battery Life: With an 80-hour battery reserve when light isn't available, these headphones can last for days without needing a traditional charge.

    • Wireless Connectivity: Bluetooth 5.0 connectivity, offering seamless pairing with devices and high-quality audio streaming.

  • Target Audience: Urban commuters, travellers, and eco-conscious consumers who value sustainability and convenience without sacrificing performance.

Urbanista Phoenix: True Wireless Earbuds

  • Overview: Urbanista Phoenix earbuds bring the concept of solar charging to true wireless earbuds, powered by Powerfoyle embedded in the charging case. Users can charge the case using both sunlight and artificial light, reducing the need for frequent plugging into a power outlet.

  • Key Features:

    • Solar Charging Case: The Powerfoyle material integrated into the charging case allows it to charge in ambient light, giving users the freedom to charge without cables.

    • Playtime: Up to 32 hours of playtime, including the power provided by the case.

    • Hybrid Active Noise Cancellation (ANC): Phoenix earbuds come with ANC for immersive sound quality.

    • Water Resistance: IPX4 rating, which makes them suitable for workouts and daily use in various weather conditions.

  • Target Audience: Fitness enthusiasts, commuters, and travellers who want a sustainable, compact, and efficient way to keep their earbuds powered.

Adidas RPT-02 SOL: Wireless Sports Headphones

  • Overview: Adidas partnered with Exeger to create the RPT-02 SOL, wireless sports headphones designed to harness the power of light for athletes and active users. These headphones are specifically designed for outdoor activities, making them perfect for runners, cyclists, and gym-goers.

  • Key Features:

    • Light-Powered Charging: With Powerfoyle, the headphones can charge through sunlight or indoor lighting, reducing the need for electrical charging.

    • Durable Design: The headphones are sweatproof and water-resistant (IPX4), making them durable for intense workouts.

    • 50-Hour Playtime: When light is not available, users still benefit from up to 50 hours of battery life on a full charge.

    • Sustainable Materials: Built with 87% recycled plastics, aligning with Adidas’ eco-friendly initiatives.

  • Target Audience: Athletes and fitness enthusiasts who spend time outdoors and seek environmentally sustainable, long-lasting audio solutions.

Blue Tiger Solare: Communication Headset

  • Overview: The Blue Tiger Solare is a solar-powered communication headset primarily designed for professionals like truckers or workers who require reliable communication tools on the go. With Powerfoyle technology, it charges using ambient light.

  • Key Features:

    • Solar-Powered: Continuous charging using Powerfoyle, designed for long-haul drivers and outdoor workers.

    • Noise Cancellation: Equipped with noise-cancelling microphones, providing clear audio in noisy environments.

    • Extreme Durability: Built to withstand tough conditions and extended use.

    • Bluetooth Connectivity: Wireless communication with long-range capabilities.

  • Target Audience: Truck drivers, dispatchers, and professionals in industries that require reliable and long-lasting communication equipment.

Safety Equipment

POC Omne Eternal: Bike Helmet

  • Overview: The POC Omne Eternal is a solar-powered bike helmet that utilizes Exeger’s Powerfoyle technology to charge integrated safety lighting automatically. This innovative approach ensures the helmet’s rear light is always powered, increasing the rider's visibility without needing frequent recharging.

  • Key Features:

    • Self-Charging Rear Light: The helmet’s rear safety light charges using both sunlight and ambient light, providing continuous power to enhance visibility for cyclists.

    • No On/Off Switch: The light is automatically activated based on ambient light levels, making it a hassle-free safety feature.

    • Lightweight Design: Despite the added technology, the helmet remains lightweight, ensuring comfort for the wearer.

    • Certified Protection: The helmet meets global safety standards for cycling helmets, providing impact protection.

  • Target Audience: Cyclists, commuters, and outdoor enthusiasts who want a hassle-free way to improve their visibility and safety while riding.

Pet Accessories

Spåra Hund: Self-Powered Dog Harness

  • Overview: The Spåra Hund harness is a solar-powered dog accessory, designed with Powerfoyle technology to provide self-sustaining power to integrated GPS and tracking systems. This product ensures pet owners can keep track of their dogs without the need for frequent recharging.

  • Key Features:

    • Solar-Powered Tracking: The harness features built-in GPS tracking that charges through light exposure, eliminating the need for regular battery replacements or charging.

    • Durable and Waterproof: Built for outdoor use, the harness is designed to be tough and weatherproof, suitable for various terrains and conditions.

    • Real-Time Tracking: Provides real-time location tracking for pet owners, ensuring that pets are safe and easy to locate.

  • Target Audience: Pet owners, particularly those with active dogs who spend time outdoors or in rural areas, looking for a convenient and reliable way to track their pets without worrying about frequent charging.

Coming Soon

Home & office appliances

Remote controls and computer accessories will soon be a great way to switch to sustainable energy in everyday life. By eliminating the need for battery replacements, these products will help reduce harmful waste and protect the environment.

Enterprise solutions

The future of physical retail is almost here. Solar-powered electronic shelf labels will offer a sustainable, cost-effective solution, enhancing consumer experiences and streamlining daily operations.


Polina Martinuka
Written by:
Polina Martinuka
Sustainability Research Analyst
Recently graduating from a university in the UK, with a Bachelor's degree in Multimedia Journalism, Polina brings a unique blend of investigative skills, the ability to analyze complex data and environmental awareness.