Why Is Solar Cheaper In Germany(Revised)

Lawrence Berkeley study on why In Germany Solar costs,
. . . are less than in the USA on a per Watt basis:
$0.62/W  Customer acquisition,
$0.36/W  Installation labor,
$0.21/W  Permit, inspection, interconnection
$0.21/W  Tax
$1.32/W  Overhead, Profit, and Misc.
-----------
$2.72/W

Yet there is a higher % of Solar energy resource in the USA than in Germany,
. . . which should mean a higher payback.

Source:  lawrence-berkeley  PDF  Sunlight