This exciting add-on set allows students to learn about renewable energy sources and can be used with the Simple and Powered Machines Set (9686). The set includes a solar panel, turbine blades, a motor/generator, LED lights, an extension wire, a LEGO® Energy Meter and full-colour building instructions for 6 real-life LEGO® models. Add the Renewable Energy Activity Pack (2009688) for detailed lesson plans to cover solar, wind and hydro power. Connected to the MINDSTORMS NXT brick, the energy meter works as a sensor and can be used for both programming and data logging. Activities and Building instructions for using 9688 with MINDSTORMS can be downloaded free of charge at www.MINDSTORMSeducation.com.