Japan’s Kyosemi Corporation is transforming the solar energy landscape with its groundbreaking Sphelar® technology—small, spherical solar cells that can capture sunlight from every direction. Unlike conventional flat solar panels that require precise positioning, these tiny 1–2 mm silicon spheres efficiently absorb direct, reflected, and diffused light, achieving conversion efficiencies of nearly 20%. This unique ability to gather light from all angles means they can consistently generate energy throughout the day, even in low-light conditions, without the need for tracking systems.
What sets Sphelar cells apart is their incredible flexibility and wide range of applications. They can be embedded into transparent building materials, enabling windows and facades to produce electricity while still allowing natural light to pass through. Their compact size also makes them suitable for powering portable devices and environmental sensors, making them an ideal fit for smart urban planning. Additionally, the manufacturing process is more sustainable, as the spherical cells are formed directly from molten silicon, minimizing material waste. As this technology continues to evolve, Sphelar is set to play a pivotal role in advancing clean energy solutions worldwide. More