Some interesting material on http://Solar-Investing.Org/
The technology may finally be here to make solar power a viable alternative.
It's naive to believe that solar, wind, geothermal, wave, biofuel, hydrogen or ethanol will be 'viable' alternatives to fossil fuels anytime soon.
Wishes and Hopes won't change the reality of there being no viable alternative to fossil fuels now or in the near future.
I agree that solar doesn't yet pay it's way because of cost but geothermal is about to explode as people have suddenly realized that there are thousands of abandoned deep oil wells where the heat can be used for geothermal steam by injecting water.
Ormat (ORA) has built a 1.5 billion, profitable business on geothermal power generation and are now starting to use abandoned deep oil wells as thermal wells. A really practical form of green power generation. The ORA generator works on very low temperatures, is 88% efficient and runs for decades without maintinence.
Another super green stock is Climate Exchange. I have doubled my money already in two weeks! They have 80% of the European market and also Chicago, Montreal and soon New York. They are an American company but listed on the London exchange (as are most green stocks!) as CLE.L. You can buy it very nicely for your US account as CXCHF. They have been skyrocketing but still have a gigantic pop to come if the Democrats pass a carbon trading law. The founder and CEO, Richard Sandor, was named "Hero of the planet" by Time Magazine.
Alternate energy does not make any sense until the costs come down much further. Without government subsidy alternate energy cannot stand own its own two feet. The stocks may come and go but the actual efficiency of the products whether it be solar panels, wind turbines or pellet stoves does not make good financial sense. Same with hybrid cars. This does not mean people will not buy these products and the stocks will go up in anticipation but basically in the end common sense will rule. Nukes are the best, then gas and oil.