Apart from these circumstances, there are regulatory and investment decisions made by governments which push electric power generation towards one technology or another. This is an exceptional case in the world (the global percentage of hydroelectric energy is 16%), which means that electricity production in the region has a small carbon footprint (measured by CO, emissions per kilowatt hour (KWh) produced), and reduces reliance on fossil fuel imports in many countries. Nonetheless, this supply structure means that the region’s electricity systems are highly dependent on rainfall regimes.