Understanding Solar Performance in the Real World

Solar UP Energy uses Enphase micro-inverters on all of our solar installations.  Results from a field study demonstrate that solar installations using Enphase micro-inverters are outperforming PVWatts estimates by 8 percent on average.

A review of similar  studies indicates that solar installations using central or 'string' inverters actually underperform PVWatts estimates by 8 percent on average.  Read the entire article: http://enphase.com/eblog/2011/understanding-solar-performance-in-the-real-world/