Access to energy extends far beyond providing electricity or distributing cookstoves, it must encompass the full spectrum of energy sources and uses that form the overall system, incorporating targeted applications for specific purposes at all levels - from individual households to community needs to national infrastructures. In short, it requires a "systems approach" to developing energy systems (see the Introduction for a more detailed explanation). This paper treats each demand area as an energy subsystem, and explores how UN goals can be achieved within each (Table 1).