Multimedia
EERE has prepared the multimedia presentations below to teach site visitors about energy efficiency and renewable energy technologies. The lessons are helpful introductions to these energy saving technologies.
Wind Power Animation 
Learn about wind turbines and the use of wind power to produce electricity in small and large applications.
How Fuel Cells Work
Shows how a polymer electrolyte membrane (PEM) fuel cell works (PEM fuel cells are the most common type used in light-duty fuel cell vehicles).
How Hybrid Electric Vehicles Work
Explains how hybrid vehicles work by showing energy flow among components during various driving activities.
Geothermal Animations
These animations provide introductions to geothermal concepts and the ways that geothermal energy is used today. Learn about geothermal power plants, enhanced geothermal systems, and geothermal heat pumps.
Photovoltaics: Turning Sunlight into Energy
This animated video shows the function of a solar cell as part of a photovoltaic panel or module.
How Does a Wind Turbine Work?
This animation shows how wind turbines operate and produce electricity for homes or other buildings.
Hydrogen Fueled Vehicles Have Multiple Safety Systems
This animation illustrates how multiple safety systems are integrated into the design of hydrogen-fueled vehicles.