Dont forget geothermal and nuclear energy! Geothermal is appliable everywhere, although it is limited to a certain amount per square kilometer (so for example, you cannot provide energy for a whole neighbourhood or industrial area from geothermal; it must be more spreaded). Nuclear is footlose except for the very important fact that it must be built in a safe place (no tectonic activity, potential natural hazards or unstable political climate).
EDIT: and of course renewable energy in progress, such as the very promising osmotic power and even energy of algae.
- This reply was modified 1 year, 6 months ago by Willem.