4.5 to 10
Wave
15:1
12
Solar Photovoltaic
3.75:1 to 10:1
21 to 83
Geothermal
2:1 to 13:1
10
Tidal
~ 6:1
10
Tar sands
5.2:1 to 5.8:1
Oil shale
Next Page 1 | 2 | 3 | 4 | 5
(Note: You can view every article as one long page if you sign up as an Advocate Member, or higher).
Michael P Byron is the author of The Path Through Infinity's Rainbow: Your Guide to Personal Survival and Spiritual Transformation in a World Gone Mad. This book is a manual for taking effective action to deal with the crises of our age including (
more...)