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. https://www.iotforall.com/energy-harvesting-iot-devices/
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ENERGY HARVESTING FOR IOT DEVICES
There are many industries where reliable power sources are unavailable. IoT is one of them. Oftentimes, connected devices have to rely solely on battery power for operation, which adds cost and limits effectiveness in their application. There are also instances in which reliable power is accessible but undesirable. For instance, a door entry sensor could be plugged into the nearest outlet, or have power running through the wall, but this can drastically increase installation costs and introduce potential security vulnerabilities. This makes battery life one of the biggest hurdles to IoT systems today. JEFF BRINER READ MORE