A self-assembly kit with solar-powered elements is a safe, non-toxic, eco-friendly toy equipped with batteries powered by renewable energy. Allows for arbitrary assembly of models using energy modules that power the model and set it in motion. During constructing models, the child also becomes familiar with the principles of how renewable energy sources work. The set can be equipped with additional power supply - a supercapacitor (not available in this option). The toy has 3 power sources: - battery compartment 2x AAA - solar panel - battery operating on saltwater - brine reactor THE SET INCLUDES: 92 elements, including distribution elements and energy components. Toy suitable for children aged 8 and up