A completely self-contained kit mounted on a sturdy sheet metal box and provides all the necessary components for demonstrating the conversion of solar energy into electrical energy, sound energy and light energy. Comprises a solar cell with a lead terminating into 4mm plug for output that can be plugged in respective sockets on top of the metal box. Input sockets provided and marked clearly for cell holder (for battery charging-storage of energy), voltmeter, bulb, buzzer and electrical motor.