Construction of the world's main demonstration power plant that will use magnetic confinement is under way at Cadarache in France.

ECONOMIST: Nuclear fusion

The pilot and demonstration are done, and the commercial production facility is under construction now in Pennsylvania the last time I checked.

FORBES: Biofuels Can't Cut Military Muster, Study Says

Representatives of these companies said that the conditions of the loans are such that they have to first build demonstration production lines, meet certain requirements, and only then tap the federal funds for additional construction.

WSJ: California Solar Deal Hits a Snag