Solar panels are great for daytime electricity, but PiggyPower is built for a bigger job. By using heat to create power while also supporting hot water and space heating, PiggyPower changes the comparison from raw watts to total useful energy.

PiggyPower Ember and BioLite CampStove both use heat to produce USB power, but they are built around different use cases. BioLite is a camp stove that can generate electricity. Ember is a ready to go thermoelectric USB power kit that uses controlled heat and water cooling to produce small usable power for emergency lighting, battery banks, phones, and USB powered devices.