I am a big believer in "Small is Beautiful."
Different technologies seem to require different market models. For example, Coal, Hydroelectric and Nuclear do best with the BIG MODEL. A big coal generator will produce less pollution for the same input of coal and output of electricity as a large number of small coal plants. When coal was used by small industry or for heating, it proved to be extremely dirty.
Solar and biodiesel seem to work better at a smaller scale. Biodiesel draws power from waste materials; so you need to have a large number of independent processing plants processing the fuel.
Solar energy reaches it zenith when it is incorporated in construction. Incorporating solar into construction involves all sorts of contracts with the property owners.
It is a strange difference. If you are going nuclear or with coal; you should be thinking in terms of large plants geared to maximize the energy produced for the environmental production. When thinking solar or biodiesel, I hope that people will be thinking of small concise applications of the technology.
Since coal, nuclear and hydroelectric require big operations, they really are in a situation that requires government oversight.
My fear is that when you take the big government/big industry view of developing bio technologies and solar, you will end up forcing the naiscent industries into the same big energy models.
This is what we are seeing with George Bush's big push on ethanol. He is forcing this biotechnology into big business/big government model that they Bush's know and love.
Solar, ethanol and biodiesel can all turn ugly if forced into the big model. The really scary thing about solar is that people will be tempted to cover large sections of the earth with solar panels. I could see the government covering (and consequently destroying) hundreds of square miles of BLM land with solar panels.