When a $300 million solar panel is the most efficient solar panel on the planet

The cost of a solar array can reach as high as $300 billion, but its efficiency has grown to a record high, according to a new report.

Wilson Electronics and solar panel manufacturer SolarWorld said Tuesday it has seen its cumulative solar panel capacity grow more than 60 percent since the end of 2011.

The industry had previously reported that capacity had declined by as much as 40 percent since 2011.