There are numerous online resources for finding short, energy-related videos appropriate for classroom use:
1) energyNOW! episodes
This was a half-hour video news magazine that aired weekly on Bloomberg cable from 2010 to 2012. All of the past episodes are available.
2) Energy 101 videos
These short videos from DOE’s Office of Energy Efficiency and Renewable Energy (EERE) explain renewable energy and energy efficiency technologies.
3) Energy Videos from Switch
The website for this recent documentary film contains approximately 300 short videos, organized by topic with many featuring interviews with experts.
4) Videos featured in the CLEAN Collection
This collection of “scientifically and pedagogically reviewed digital resources for teaching about climate science, climate change, and energy awareness” includes video resources.