The 16-module solar array pictured above was built in 2005.  It probably has 2.5 Kilowatt (KW) to 2.8 KW of nameplate capacity. In New Jersey, residential solar systems range from 3 KW to 30 KW. Most are between 4 and 10 KW. Commercial systems range from 8KW to 200 KW. Utility scale systems are in the 10 Mega Watt (MW) to 550 MW range. In 2005, the costs for small scale residential systems were around $8.50 / watt, exclusive of any incentives. Today it is probably around half that, and cheaper for the larger utility scale systems. 1.0 MW system would require 4,000 modules of 250 watts each. The system pictured above requires about 50 square feet of land.As illustrated by the photo of the Topaz array, below, a 550 MW system, like Topaz, would require 2.2 million modules, and would cover a lot of ground.

First Solar, FSLR, a $2.8 Billion company, and Sunpower, SPWR, an $840 Million company, two of the pillars of what is left of the American solar energy industry, made some interesting statements in their 2011 annual reports: Continue reading →