Key Takeaways
1. Lenovo introduced the Yoga Solar PC Proof of Concept, capable of charging via sunlight and ambient light.
2. Just 20 minutes of direct sunlight can power an hour of video playback.
3. The solar panel boasts a thickness of 15 mm and the laptop weighs around 1.5 kg.
4. The device achieves 24% solar efficiency using “Back Contact Cell” technology and a Dynamic Solar Tracking system.
5. The Yoga Solar PC kit includes two solar panels and a USB-C power bank, compatible with any USB-C device.
Lenovo has unveiled a rather unusual device at MWC 2025. The Yoga Solar PC Proof of Concept is said to be capable of charging your laptop using sunlight and even ambient light. Lenovo asserts that just 20 minutes of direct sunlight can provide enough energy for an hour of video playback. This innovative panel measures only 15 mm in thickness, and the total weight of the laptop is around 1.5 kg.
Solar Efficiency Innovations
Typically, the efficiency of commercially available solar cells tops out at around 19-20%. However, Lenovo claims that their Yoga Solar PC Proof of Concept can achieve an impressive 24% efficiency. This is made possible by their “Back Contact Cell” technology, which repositions the mounting brackets and grid lines to the rear of the solar cells, enhancing active absorption. Additionally, it features a Dynamic Solar Tracking system that continuously monitors the current and voltage of the solar panel, automatically adjusting the charger settings to prioritize sending the generated energy to the system.
Versatile Charging Solution
Also introduced is the Yoga Solar PC kit, which comprises two solar panels and a USB-C power bank. Unlike the aforementioned laptop that needs specific hardware, this kit is compatible with any device that supports power through USB-C. Regrettably, Lenovo has not provided any information regarding the pricing or availability of either product.


