Onio
Battery-free microcontrollers powering the next wave of sustainable IoT
Latest round: €5M
Invested in: 2025
Investors: Maki.vc, node.vc

As the Internet of Things expands, so does the challenge of powering billions of devices without adding to the world’s battery waste. ONiO tackles this with a breakthrough microcontroller that runs entirely on ambient energy, harvesting power from light, heat, radio waves, or motion.
ONiO.zero integrates processing, connectivity, and power management on a single chip, enabling battery-free or ultra-low-power devices for applications in agriculture, logistics, retail, and smart buildings. No charging, just efficient, autonomous operation.
Founded by a team of engineers and deep tech specialists, ONiO is redefining what’s possible at the edge, making IoT smarter, cleaner, and more sustainable.