U.S. production of solar components

In total, the U.S. produced 40,658 metric tons (MT) of polysilicon, 384 megawatts (MW) of wafers, 969 MW of cells, and 1,219 MW of modules in 2011. In sharp contrast to 2010, which saw 100% growth in production across the PV value chain, 2011 saw production stay mostly flat for polysilicon and modules, and shrink significantly in the case of wafers and cells.

Source:  SEIA 2011 Year-in-Review

U.S. photovoltaic capacity installed by sector and by quarter for 2011

Source:  SEIA 2011 Year-in-Review

Total U.S. photovoltaic system installations, 2011

There were over 61,000 individual photovoltaic systems installed in the U.S. in 2011, bringing the total number of operating systems in the U.S. to more than 214,000.

Source:  SEIA 2011 Year-in-Review