Green energy is coming, and you can't stop it.
All you really need for green energy is a handful of copper salts to throw in the fire.
Instant green flames.
Green energy is nice in theory, but it still as a ways to go. You can also, theoretically, build a laser to work off the thermal energy in an insulated space to crate a kind of refrigerator, but the application would be relatively useless at this stage.
The problem which is inadequately addressed by proponents of certain solutions is the issue of total energy return. If it requires X units of energy to create a 'green source' and the green source then produces less than X units of total output energy before needing service, then the 'green source' is not very useful. The recent example of Corn based ethanol springs to mind. The energy return on the corn is so modest that the only real result of that particular 'green' fuel is to drive up the price of food.
Without the total cost of manufacture, along with a life of operation and operational energy cost analysis, any 'green energy' poses the risk that it will prove another government funded scam.
Perhaps people have forgotten the "mixed" fuel made by spraying diesel over crushed coal, which is then burned by traditional coal fired electrical plants. The whole is funded by government subsidies to create an alternative to Oil, but accomplishes precisely nothing, save to enrich a few cheats. This is why we see the insistence upon knowing the true cost of a ton of fiberglass, a bit of data which is remarkably tough to uncover, so that those calculations may be made.