The year 2004 marked the beginning of the solar-age for Germany. In that year alone, 600 megawatts (MW) of solar photovoltaic (PV) electricity systems were installed. Up until 2004, the combined number of all systems ever installed in Germany was 405 megawatts. What caused this explosion in solar installations? It is called the "EEG" (Energie-Einspeise-Gesetz), commonly referred to as a "Feed-In Tariff" in the U.S. Because this renewable energy model has been in place for some time now, it's possible to analyze and derive value from its real costs to determine if the model is truly viable.