NASA
Nasa: Climate Kids: Gallery of Energy
A collection of photographs highlighting alternative energy sources from fields of wind farms to towers of solar panels.
US Department of Energy
Fus Ed Web: Physics of a Fundamental Energy Source
An excellent resource on nuclear fusion! Using incredible graphics and excellent discussion, this site (with its several pages) provides an exhaustive online course on the topic. Click on the link for "a Guided Tour" and begin.
US Department of Energy
U.s. Department of Energy: Fuel Cell Technologies Program: Fuel Cell Animation
A series of animated illustrations show how a polymer electrolyte membrane fuel cell works. PEM fuel cells are the most common type used in flex-fuel vehicles.
Other
Peak Oil: Non Renewable Resources Depletion Effects
A collection of graphs, tables, and diagrams that illustrate the global impact of natural resource depletion. (Published 2014)
US Department of Energy
U.s. Department of Energy: Wind Program: How Does a Wind Turbine Work?
This animated illustration shows how a wind turbine can generate electricity for homes and communities.