Doe's Sunshot:

DOE Solar Technology Development Manager Joseph Stekli said,
. . . there was a shift of R&D funding between FY 2011 and FY 2012
. . . from trough technology to tower technology,
. . . which “represents the state of the technologies.”
Trough technology is now seen as essentially proven.

“There are 5 CSP plants under construction in the U.S. and
. . . all have received DOE loan guarantees,
Almost $6 billion has been made available for these plants,
. . . which will total about 1.3 gigawatts of generating capacity.
. . . We’re very excited about these plants and
. . . cannot wait to see them come on-line.”

Source: greentechmedia