This resource provides background information about semiconductors and photovoltaic cells. Then it has three parts to the lab activity: (1) solar cell(s) and small electric fan, (2) Lifting small masses with an electric motor, and (3) Powering a light bulb. The first activity, solar cell(s) and small electric fan, simply requires the students to create an electric circuit of their design that incorporates at least one solar cell. The students are to measure the current and voltage of the array and compare them to the manufacturer values. The second activity, lifting small masses with an electric motor, again requires the students to design their own circuit containing at least one solar cell, but this time they also need to power an electric motor using the solar array. Their creation must lift a mass 0.5 m. They need to calculate the power of the solar array as it lifts the mass, determine the change in gravitation potential energy of the mass, and also calculate the efficiency of the motor. The third and final lab activity, powering a light bulb, requires the students to construct their own circuit with a solar array so they can power a light bulb and have it shine with various amounts of intensity. The students are to compare the power of the solar cell and the light bulb.