Re: Warning Words
REASON: Bad analogy.
At least hydro dams are pretty consistent. Bad weather only affects its output marginally barring a genuine disaster.
Solar has a problem in that department, and even solar thermal has a limited area of practicality (all the ones I know of are in southern deserts). Sunlight gets less consistent the further north you go. I chose Reykjavik because it happens to be just south of the Arctic Circle. That's about as far north as you can go before you go into the six-month day/night cycle (as in six-month days and nights). The winter solstice is the shortest day of the year up north, so imagine how little sunlight a place like Iceland would get that day. Furthermore, the sunlight's at a shallow angle, weakening its strength further.
Solar is just not practical for a sizable chunk of the world, and if you try to spread it around or go into space, you now have international relations to contend with, not to mention political chess (or worse, sabotage--think solar collector turned killer space maser).