ABSTRACT
The energy system plays a central role in the global economic and social system. Energy in general and electricity in particular are essential for human coexistence and every modern form of economic activity. The challenge of establishing markets of energy efficiency and also with regard to the governance of the energy system is that the “hidden fuel” is indeed invisible. Sustainability is a widely used but context-dependent term that has produced manifold definitions. The global energy policy debate is based on the energy trilemma that defines the energy sector’s triangle of objectives. The term “energy trilemma” implies that the three sides of the triangle involve three basic challenges, which together may be perceived as difficult or even impossible to overcome simultaneously. Photovoltaics (PV) offer a wide range of power spectrum from milli to mega-watt (mW-MW) and consequently of applications. In developing countries PV is used predominantly for electrification in rural areas.
