# The Solar Promise

Title from data sheet

Demonstrates the basic principles of available solar energy devices. Shows the difference between passive and active systems and stress the value of passive systems and their cost effectiveness

- Kind: Educational
- Year: 1979
- Runtime: 28 min
- By: Mayer Productions
- Genres: Education, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/thesolarpromise)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/thesolarpromise?play=1)