Efficiency gain through smart features
Explanation: For rooftop systems, static alignment to the sun, heat build-up and decontamination lead to a lower output than the one stated as theoretically possible at the location. Furthermore, the system does not constantly produce electricity throughout the day, for example in the afternoon when it is not required. This leads to the distinctly lower degree of self-utilization of a rooftop system and/or to the stated efficiency gain of smartflower POP.
(1) PVGIS: Photovoltaic Geographical Information System, http://re.jrc.ec.europa.eu/pvgis/
(2) Degree of self-utilization: 60% for smartflower POP; 30% for rooftop systems is a statistical empirical value